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Station 04010500 -- Pigeon River at Middle Falls near Grand … · 2007. 2. 8. · Station 04010500...

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0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001 1.001 1.01 1.111 1.25 2 5 10 100 1000 0.6 1.0 2.0 4.0 6.0 10.0 20.0 40.0 60.0 100.0 200.0 400.0 1-Day Lowflow 79 non-zero values 0 zero values Estimated streamflow Recurrence Streamflow 100 years 4.2 50 years 7.8 20 years 17.3 10 years 30.4 5 years 50.9 2 years 87.2 RECURRENCE INTERVAL, IN YEARS 0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001 1.001 1.01 1.111 1.25 2 5 10 100 1000 0.6 1.0 2.0 4.0 6.0 10.0 20.0 40.0 60.0 100.0 200.0 400.0 7-Day Lowflow 79 non-zero values 0 zero values Estimated streamflow Recurrence Streamflow 100 years 4.3 50 years 8.1 20 years 18.2 10 years 32.3 5 years 54.1 2 years 91.1 STREAMFLOW, IN CUBIC FEET PER SECOND 0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001 1.001 1.01 1.111 1.25 2 5 10 100 1000 0.6 1.0 2.0 4.0 6.0 10.0 20.0 40.0 60.0 100.0 200.0 400.0 30-Day Lowflow 79 non-zero values 0 zero values Estimated streamflow Recurrence Streamflow 100 years 7.2 50 years 12.0 20 years 23.4 10 years 38.1 5 years 60.4 2 years 103 NON-EXCEEDENCE PROBABILITY (Cunnane plotting position) Station 04010500 -- Pigeon River at Middle Falls near Grand Portage MN Period of record 1922 -- 2003 Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31 Log Normal Probability plot December, 2006 18 USGS OFR 2007-1033
Transcript
Page 1: Station 04010500 -- Pigeon River at Middle Falls near Grand … · 2007. 2. 8. · Station 04010500 -- Pigeon River at Middle Falls near Grand Portage MN Period of record 1922 --

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0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

0.6

1.0

2.0

4.0

6.0

10.0

20.0

40.0

60.0

100.0

200.0

400.0

1-Day Lowflow■

79 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 4.2 50 years 7.8 20 years 17.3 10 years 30.4 5 years 50.9 2 years 87.2

RECURRENCE INTERVAL, IN YEARS

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■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

0.6

1.0

2.0

4.0

6.0

10.0

20.0

40.0

60.0

100.0

200.0

400.0

7-Day Lowflow■

79 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 4.3 50 years 8.1 20 years 18.2 10 years 32.3 5 years 54.1 2 years 91.1

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■■■■

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■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

0.6

1.0

2.0

4.0

6.0

10.0

20.0

40.0

60.0

100.0

200.0

400.0

30-Day Lowflow■

79 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 7.2 50 years 12.0 20 years 23.4 10 years 38.1 5 years 60.4 2 years 103

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 04010500 -- Pigeon River at Middle Falls near Grand Portage MN

Period of record 1922 -- 2003

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

18 USGS OFR 2007-1033

Page 2: Station 04010500 -- Pigeon River at Middle Falls near Grand … · 2007. 2. 8. · Station 04010500 -- Pigeon River at Middle Falls near Grand Portage MN Period of record 1922 --

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■■■

■■■■■■

■■

■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

4

5

6

7

8 910

20

30

40

1-Day Lowflow■

27 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 3.9 50 years 4.7 20 years 6.2 10 years 7.6 5 years 9.7 2 years 14.4

RECURRENCE INTERVAL, IN YEARS

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■■

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■■■■■■■■■

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0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

4

5

6

7

8 910

20

30

40

7-Day Lowflow■

27 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 5.1 50 years 6.0 20 years 7.5 10 years 9.1 5 years 11.2 2 years 16.1

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■■

■■■■■■■■■■■■

■■

■■■

■■

■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

4

5

6

7

8 910

20

30

40

30-Day Lowflow■

27 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 7.0 50 years 8.2 20 years 10.3 10 years 12.3 5 years 15.0 2 years 20.8

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 04012500 -- Poplar River at Lutsen, MN

Period of record 1914 -- 1961

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

Appendix 1 19

Page 3: Station 04010500 -- Pigeon River at Middle Falls near Grand … · 2007. 2. 8. · Station 04010500 -- Pigeon River at Middle Falls near Grand Portage MN Period of record 1922 --

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■■■■■

■■■■■■■■■■■■■■■

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■■■■■■■■■■

■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

0.3

0.5

0.7

1.0

2.0

3.0

5.0

7.0

10.0

20.0

30.0

50.0

1-Day Lowflow■

59 non-zero values1 zero valueEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.3 20 years 1.4 10 years 2.5 5 years 4.5 2 years 9.8

RECURRENCE INTERVAL, IN YEARS

■■

■■■■

■■■

■■■■■■■■■■

■■■■■■■■■■■■■■■■■■■■■■■■■■

■■■■■■■■■■■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

0.3

0.5

0.7

1.0

2.0

3.0

5.0

7.0

10.0

20.0

30.0

50.0

7-Day Lowflow■

59 non-zero values1 zero valueEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.5 20 years 1.9 10 years 3.2 5 years 5.2 2 years 10.8

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■

■■■

■■■

■■■■■■■■■■■■■■■■■■■■■■■■■■■■

■■■■■■■■■■■■■■■■■■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

0.3

0.5

0.7

1.0

2.0

3.0

5.0

7.0

10.0

20.0

30.0

50.0

30-Day Lowflow■

59 non-zero values1 zero valueEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 1.0 20 years 3.2 10 years 5.0 5 years 7.7 2 years 14.7

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 04014500 -- Baptism River near Beaver Bay, MN

Period of record 1929 -- 1993

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

20 USGS OFR 2007-1033

Page 4: Station 04010500 -- Pigeon River at Middle Falls near Grand … · 2007. 2. 8. · Station 04010500 -- Pigeon River at Middle Falls near Grand Portage MN Period of record 1922 --

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■■

■■■■■

■■■■■■■■

■■■■

■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

0.07

0.10

0.20

0.30

0.50

0.70

1.00

2.00

3.00

5.00

7.00

10.00

20.00

1-Day Lowflow■

27 non-zero values2 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.0 20 years 0.0 10 years 0.3 5 years 1.1 2 years 3.7

RECURRENCE INTERVAL, IN YEARS

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■■■■■

■■■■

■■■■■■■

■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

0.07

0.10

0.20

0.30

0.50

0.70

1.00

2.00

3.00

5.00

7.00

10.00

20.00

7-Day Lowflow■

27 non-zero values2 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.0 20 years 0.0 10 years 0.4 5 years 1.4 2 years 4.5

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■■■■■■■■■■■■■

■■

■■■■■

■■■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

0.07

0.10

0.20

0.30

0.50

0.70

1.00

2.00

3.00

5.00

7.00

10.00

20.00

30-Day Lowflow■

27 non-zero values2 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.0 20 years 0.0 10 years 0.9 5 years 2.4 2 years 6.2

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 04015330 -- Knife River near Two Harbors, MN

Period of record 1975 -- 2004

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

Appendix 1 21

Page 5: Station 04010500 -- Pigeon River at Middle Falls near Grand … · 2007. 2. 8. · Station 04010500 -- Pigeon River at Middle Falls near Grand Portage MN Period of record 1922 --

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■■■

■■

■■■■■■

■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

1

2

3

4

5

6 7

10

20

30

1-Day Lowflow■

25 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.9 50 years 1.0 20 years 1.4 10 years 1.8 5 years 2.5 2 years 4.6

RECURRENCE INTERVAL, IN YEARS

■■■■■

■■

■■

■■■

■■■■

■■■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

1

2

3

4

5

6 7

10

20

30

7-Day Lowflow■

25 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 1.2 50 years 1.4 20 years 1.8 10 years 2.3 5 years 3.0 2 years 5.1

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■■■

■■■■■■

■■■■

■■■■

■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

1

2

3

4

5

6 7

10

20

30

30-Day Lowflow■

25 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 1.3 50 years 1.5 20 years 2.0 10 years 2.6 5 years 3.4 2 years 6.0

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 04015500 -- Second Creek near Aurora, MN

Period of record 1956 -- 1980

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

22 USGS OFR 2007-1033

Page 6: Station 04010500 -- Pigeon River at Middle Falls near Grand … · 2007. 2. 8. · Station 04010500 -- Pigeon River at Middle Falls near Grand Portage MN Period of record 1922 --

■■■

■■■

■■■■■

■■■■

■■■■■■

■■■■■■

■■■■■

■■■

■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

2

3

4

5

6 7

10

20

30

40

50

60

1-Day Lowflow■

39 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 1.9 50 years 2.4 20 years 3.3 10 years 4.3 5 years 5.9 2 years 10.1

RECURRENCE INTERVAL, IN YEARS

■■

■■■■■■■

■■■■■

■■■■■■■

■■■■■■■■■■

■■■■

■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

2

3

4

5

6 7

10

20

30

40

50

60

7-Day Lowflow■

39 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 2.3 50 years 2.8 20 years 3.8 10 years 4.8 5 years 6.5 2 years 10.9

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■■

■■■■■■

■■■■■■■■

■■■■■■■■■■■

■■■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

2

3

4

5

6 7

10

20

30

40

50

60

30-Day Lowflow■

39 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 2.8 50 years 3.4 20 years 4.5 10 years 5.7 5 years 7.5 2 years 12.7

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 04016000 -- Partridge River near Aurora, MN

Period of record 1943 -- 1982

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

Appendix 1 23

Page 7: Station 04010500 -- Pigeon River at Middle Falls near Grand … · 2007. 2. 8. · Station 04010500 -- Pigeon River at Middle Falls near Grand Portage MN Period of record 1922 --

■■

■■

■■

■■■■■■■■■■■■■■■■■■■

■■■■■■

■■■■■

■■

■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

3

4

5 6

8

10

20

30

40

50 60

80

100

1-Day Lowflow■

44 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 4.0 50 years 5.2 20 years 7.6 10 years 10.4 5 years 14.7 2 years 26.1

RECURRENCE INTERVAL, IN YEARS

■■

■■■■■■■■■■■■■■■■■

■■■■■■■■■■

■■■■■■■

■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

3

4

5 6

8

10

20

30

40

50 60

80

100

7-Day Lowflow■

44 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 4.2 50 years 5.5 20 years 8.0 10 years 11.0 5 years 15.6 2 years 27.6

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■

■■

■■■■■■■■■■■■■■■■■■

■■■■■■■■

■■■■

■■■

■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

3

4

5 6

8

10

20

30

40

50 60

80

100

30-Day Lowflow■

44 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 5.0 50 years 6.5 20 years 9.5 10 years 12.9 5 years 18.2 2 years 31.7

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 04016500 -- St. Louis River near Aurora, MN

Period of record 1943 -- 1987

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

24 USGS OFR 2007-1033

Page 8: Station 04010500 -- Pigeon River at Middle Falls near Grand … · 2007. 2. 8. · Station 04010500 -- Pigeon River at Middle Falls near Grand Portage MN Period of record 1922 --

■■

■■

■■

■■■■■

■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

0.80.9

2.0

3.0

4.0

5.0

6.0

7.0

8.09.0

1-Day Lowflow■

21 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.8 50 years 1.0 20 years 1.3 10 years 1.7 5 years 2.2 2 years 3.3

RECURRENCE INTERVAL, IN YEARS

■■■

■■■■

■■

■■■

■■■■

■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

0.80.9

2.0

3.0

4.0

5.0

6.0

7.0

8.09.0

7-Day Lowflow■

21 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.8 50 years 1.0 20 years 1.4 10 years 1.8 5 years 2.3 2 years 3.6

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■■

■■■

■■

■■■■

■■

■■

■■

■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

0.80.9

2.0

3.0

4.0

5.0

6.0

7.0

8.09.0

30-Day Lowflow■

21 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 1.0 50 years 1.2 20 years 1.6 10 years 2.1 5 years 2.7 2 years 4.2

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 04017000 -- Embarrass River at Embarrass, MN

Period of record 1943 -- 1965

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

Appendix 1 25

Page 9: Station 04010500 -- Pigeon River at Middle Falls near Grand … · 2007. 2. 8. · Station 04010500 -- Pigeon River at Middle Falls near Grand Portage MN Period of record 1922 --

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■■■■■■

■■

■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

4

6

8

10

20

30

40

60

80

100

200

1-Day Lowflow■

24 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 3.2 50 years 4.6 20 years 7.5 10 years 11.3 5 years 17.9 2 years 38.8

RECURRENCE INTERVAL, IN YEARS

■■

■■■■■

■■■

■■■

■■■■■■■

■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

4

6

8

10

20

30

40

60

80

100

200

7-Day Lowflow■

24 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 23.7 50 years 28.3 20 years 36.5 10 years 45.1 5 years 57.2 2 years 86.1

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■

■■

■■■■■■■

■■■■■■■■

■■■

■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

4

6

8

10

20

30

40

60

80

100

200

30-Day Lowflow■

24 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 25.0 50 years 30.7 20 years 40.8 10 years 51.5 5 years 66.7 2 years 102

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 04018750 -- St. Louis River at Forbes, MN

Period of record 1965 -- 1990

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

26 USGS OFR 2007-1033

Page 10: Station 04010500 -- Pigeon River at Middle Falls near Grand … · 2007. 2. 8. · Station 04010500 -- Pigeon River at Middle Falls near Grand Portage MN Period of record 1922 --

■■■

■■■■

■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

4

5

6

7

8

9

10

20

1-Day Lowflow■

12 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 3.3 50 years 3.5 20 years 3.9 10 years 4.3 5 years 4.8 2 years 6.0

RECURRENCE INTERVAL, IN YEARS

■■■■

■■■■

■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

4

5

6

7

8

9

10

20

7-Day Lowflow■

12 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 3.4 50 years 3.7 20 years 4.1 10 years 4.4 5 years 5.0 2 years 6.1

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■■

■■■■

■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

4

5

6

7

8

9

10

20

30-Day Lowflow■

12 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 3.9 50 years 4.1 20 years 4.5 10 years 4.9 5 years 5.4 2 years 6.7

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 04018900 -- East Two River near Iron Junction, MN

Period of record 1967 -- 1979

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

Appendix 1 27

Page 11: Station 04010500 -- Pigeon River at Middle Falls near Grand … · 2007. 2. 8. · Station 04010500 -- Pigeon River at Middle Falls near Grand Portage MN Period of record 1922 --

■■■

■■

■■■

■■■

■■■

■■

■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

2

3

4

5

6

7

8 910

20

1-Day Lowflow■

21 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 2.6 50 years 2.9 20 years 3.3 10 years 3.8 5 years 4.4 2 years 6.1

RECURRENCE INTERVAL, IN YEARS

■■

■■■

■■■■■

■■

■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

2

3

4

5

6

7

8 910

20

7-Day Lowflow■

21 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 2.7 50 years 2.9 20 years 3.4 10 years 3.9 5 years 4.6 2 years 6.3

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■■

■■■

■■■■

■■■

■■

■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

2

3

4

5

6

7

8 910

20

30-Day Lowflow■

21 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 3.0 50 years 3.2 20 years 3.7 10 years 4.2 5 years 4.9 2 years 6.8

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 04019000 -- West Two River near Iron Junction, MN

Period of record 1955 -- 1979

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

28 USGS OFR 2007-1033

Page 12: Station 04010500 -- Pigeon River at Middle Falls near Grand … · 2007. 2. 8. · Station 04010500 -- Pigeon River at Middle Falls near Grand Portage MN Period of record 1922 --

■■

■■

■■■

■■■

■■■■

■■■■■■■■■■■■■■■■■■■■

■■■■■■■■

■■■■■■■■■

■■■■■■■

■■■■■■■■■■■■■■■■■■■■■

■■■■■■■■■■■■■■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

80

100

200

300

400

500

600 700

1000

2000

1-Day Lowflow■

96 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 90.2 50 years 117 20 years 169 10 years 227 5 years 314 2 years 525

RECURRENCE INTERVAL, IN YEARS

■■

■■

■■■■■■■

■■■■■■■■■■■■■■■■■■■■■■■■■

■■■■■■■■

■■■■■■■■■

■■■■■■■■■■■■

■■■■■■■■■■■■■■■■■■■■■■■■■■■■

■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

80

100

200

300

400

500

600 700

1000

2000

7-Day Lowflow■

96 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 145 50 years 180 20 years 243 10 years 311 5 years 409 2 years 643

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■■■■■

■■■

■■■■■■■■■■■■■■■■■■■■■■■

■■■■■■■■■■

■■■■■■■■■

■■■■■■■■■■■

■■■■■■■■■■■■■■■■■■■■■■■■■■■

■■

■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

80

100

200

300

400

500

600 700

1000

2000

30-Day Lowflow■

96 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 203 50 years 242 20 years 311 10 years 384 5 years 488 2 years 741

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 04024000 -- St. Louis River at Scanlon, MN

Period of record 1909 -- 2004

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

Appendix 1 29

Page 13: Station 04010500 -- Pigeon River at Middle Falls near Grand … · 2007. 2. 8. · Station 04010500 -- Pigeon River at Middle Falls near Grand Portage MN Period of record 1922 --

■■

■■

■■■

■■■■

■■■■

■■■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

0.3

0.4

0.5

0.6

0.7

0.80.91.0

2.0

3.0

1-Day Lowflow■

24 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.3 50 years 0.3 20 years 0.4 10 years 0.5 5 years 0.7 2 years 1.1

RECURRENCE INTERVAL, IN YEARS

■■

■■

■■

■■■■■

■■■■■■

■■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

0.3

0.4

0.5

0.6

0.7

0.80.91.0

2.0

3.0

7-Day Lowflow■

24 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.4 50 years 0.5 20 years 0.6 10 years 0.7 5 years 0.9 2 years 1.3

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■

■■■■■■■■

■■■■■■■

■■■■

■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

0.3

0.4

0.5

0.6

0.7

0.80.91.0

2.0

3.0

30-Day Lowflow■

24 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.8 50 years 0.8 20 years 0.9 10 years 1.0 5 years 1.2 2 years 1.5

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 04024098 -- Deer Creek near Holyoke, MN

Period of record 1977 -- 2002

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

30 USGS OFR 2007-1033

Page 14: Station 04010500 -- Pigeon River at Middle Falls near Grand … · 2007. 2. 8. · Station 04010500 -- Pigeon River at Middle Falls near Grand Portage MN Period of record 1922 --

■■■■

■■

■■■■■

■■■■■

■■■■

■■■■■

■■■

■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

0.06

0.10

0.20

0.40

0.60

1.00

2.00

4.00

6.00

10.00

20.00

40.00

1-Day Lowflow■

34 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.06 50 years 0.1 20 years 0.2 10 years 0.4 5 years 0.9 2 years 3.2

RECURRENCE INTERVAL, IN YEARS

■■

■■■■

■■

■■■■

■■

■■■■

■■■■■

■■■■

■■■■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

0.06

0.10

0.20

0.40

0.60

1.00

2.00

4.00

6.00

10.00

20.00

40.00

7-Day Lowflow■

34 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.09 50 years 0.2 20 years 0.3 10 years 0.6 5 years 1.2 2 years 3.9

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■■

■■■■■■

■■■

■■■■■

■■■■■

■■

■■■■■

■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

0.06

0.10

0.20

0.40

0.60

1.00

2.00

4.00

6.00

10.00

20.00

40.00

30-Day Lowflow■

34 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.2 50 years 0.4 20 years 0.7 10 years 1.2 5 years 2.2 2 years 6.4

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 05030000 -- Otter Tail River near Detroit Lakes, MN

Period of record 1938 -- 1971

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

Appendix 1 31

Page 15: Station 04010500 -- Pigeon River at Middle Falls near Grand … · 2007. 2. 8. · Station 04010500 -- Pigeon River at Middle Falls near Grand Portage MN Period of record 1922 --

■■■

■■■

■■■■

■■

■■■■■■

■■■■

■■■■■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

0.8 1.0

2.0

3.0

4.0

6.0

8.010.0

20.0

30.0

40.0

60.0

1-Day Lowflow■

35 non-zero values4 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.0 20 years 0.0 10 years 0.0 5 years 1.9 2 years 11.5

RECURRENCE INTERVAL, IN YEARS

■■■

■■■

■■

■■■

■■

■■■■■■

■■■

■■■■■■■

■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

0.8 1.0

2.0

3.0

4.0

6.0

8.010.0

20.0

30.0

40.0

60.0

7-Day Lowflow■

35 non-zero values4 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.0 20 years 0.0 10 years 0.0 5 years 2.5 2 years 13.8

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■

■■■■

■■■■

■■■

■■■■■

■■■■■

■■■■■■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

0.8 1.0

2.0

3.0

4.0

6.0

8.010.0

20.0

30.0

40.0

60.0

30-Day Lowflow■

35 non-zero values4 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.0 20 years 0.0 10 years 0.0 5 years 3.0 2 years 15.6

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 05040500 -- Pelican River near Fergus Falls, MN

Period of record 1910 -- 1981

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

32 USGS OFR 2007-1033

Page 16: Station 04010500 -- Pigeon River at Middle Falls near Grand … · 2007. 2. 8. · Station 04010500 -- Pigeon River at Middle Falls near Grand Portage MN Period of record 1922 --

■■■■

■■■■■■■■

■■■

■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■

■■■■■■■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

1

2

4

6

10

20

40

60

100

200

400

600

1-Day Lowflow■

73 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 1.2 50 years 2.0 20 years 4.5 10 years 8.5 5 years 17.6 2 years 58.3

RECURRENCE INTERVAL, IN YEARS

■■

■■■■■■■■

■■■■

■■

■■■■■■■

■■■■■■■■■■■■■■■■■■■■■■■■■■■■

■■■■■■■■■■■■■■

■■■■■■

■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

1

2

4

6

10

20

40

60

100

200

400

600

7-Day Lowflow■

73 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 3.1 50 years 4.9 20 years 9.4 10 years 16.2 5 years 30.0 2 years 86.6

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■■

■■■

■■■■

■■■

■■■■■■■■■■

■■■■■■■■■■■■■■■■■■■■■■■■■■■

■■■■■■

■■■■■■■■■■■■■

■■■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

1

2

4

6

10

20

40

60

100

200

400

600

30-Day Lowflow■

73 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 4.2 50 years 6.7 20 years 12.8 10 years 21.9 5 years 40.4 2 years 114

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 05046000 -- Otter Tail River below Orwell Da near Fergus Falls, MN

Period of record 1932 -- 2004

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

Appendix 1 33

Page 17: Station 04010500 -- Pigeon River at Middle Falls near Grand … · 2007. 2. 8. · Station 04010500 -- Pigeon River at Middle Falls near Grand Portage MN Period of record 1922 --

0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1

1.1 1.2 1.4 1.7 2 2.5 3.3 5 10

0.04

0.06

0.10

0.20

0.40

0.60

1.00

2.00

4.00

6.00

10.00

20.00

1-Day Lowflow■ 4 non-zero values

29 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.0 20 years 0.0 10 years 0.0 5 years 0.0 2 years 0.0

RECURRENCE INTERVAL, IN YEARS

0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1

1.1 1.2 1.4 1.7 2 2.5 3.3 5 10

0.07

0.10

0.20

0.30

0.50

0.70

1.00

2.00

3.00

5.00

7.00

10.00

7-Day Lowflow■ 5 non-zero values

28 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.0 20 years 0.0 10 years 0.0 5 years 0.0 2 years 0.0

DN

OC

ES

RE

P T

EE

F CI

BU

C NI ,

WOL

FM

AE

RT

S

■■

■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

3e-004

1e-003

3e-003

1e-002

3e-002

1e-001

3e-001

1e+000

3e+000

1e+001

30-Day Lowflow■ 8 non-zero values

25 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.0 20 years 0.0 10 years 0.0 5 years 0.0 2 years 0.0

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 05049000 -- Mustinka River above Wheaton, MN

Period of record 1917 -- 1958

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

34 USGS OFR 2007-1033

Page 18: Station 04010500 -- Pigeon River at Middle Falls near Grand … · 2007. 2. 8. · Station 04010500 -- Pigeon River at Middle Falls near Grand Portage MN Period of record 1922 --

■■■

■■

■■■

■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

0.01

0.02

0.05

0.10

0.20

0.50

1.00

2.00

5.00

10.00

20.00

1-Day Lowflow■

18 non-zero values44 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.0 20 years 0.0 10 years 0.0 5 years 0.0 2 years 0.0

RECURRENCE INTERVAL, IN YEARS

■■

■■■■

■■

■■■■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

0.003

0.010

0.030

0.100

0.300

1.000

3.000

10.000

30.000

7-Day Lowflow■

20 non-zero values42 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.0 20 years 0.0 10 years 0.0 5 years 0.0 2 years 0.0

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■

■■■

■■■

■■■■■

■■■■■■■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

3e-004

1e-003

3e-003

1e-002

3e-002

1e-001

3e-001

1e+000

3e+000

1e+001

3e+001

1e+002

30-Day Lowflow■

25 non-zero values37 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.0 20 years 0.0 10 years 0.0 5 years 0.0 2 years 0.0

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 05050000 -- Bois De Sioux River near White Rock, SD

Period of record 1943 -- 2004

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

Appendix 1 35

Page 19: Station 04010500 -- Pigeon River at Middle Falls near Grand … · 2007. 2. 8. · Station 04010500 -- Pigeon River at Middle Falls near Grand Portage MN Period of record 1922 --

■■■

■■■

■■■■■■■■■■

■■■■■■■■■■■■■■■■■■

■■■■■■■

■■■■■■■■■■■■■■■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

1

2

4

6

10

20

40

60

100

200

400

600

1000

1-Day Lowflow■

61 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 2.6 50 years 4.3 20 years 8.8 10 years 15.7 5 years 29.8 2 years 84.8

RECURRENCE INTERVAL, IN YEARS

■■

■■

■■

■■■■■■■■■■

■■■■■■■■■■■■■■■■■■■■■

■■■■■■■■■■■■■■■■■■■■

■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

1

2

4

6

10

20

40

60

100

200

400

600

1000

7-Day Lowflow■

61 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 3.4 50 years 5.9 20 years 12.6 10 years 23.2 5 years 44.8 2 years 125

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■■■■■

■■■■■■■■

■■■■■■■■■■■■■■■■■■■■■■

■■■■■■■■■■■■■■■■■■■

■■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

1

2

4

6

10

20

40

60

100

200

400

600

1000

30-Day Lowflow■

61 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 4.9 50 years 8.8 20 years 19.3 10 years 35.5 5 years 67.3 2 years 171

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 05051500 -- Red River of the North at Wahpeton

Period of record 1943 -- 2004

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

36 USGS OFR 2007-1033

Page 20: Station 04010500 -- Pigeon River at Middle Falls near Grand … · 2007. 2. 8. · Station 04010500 -- Pigeon River at Middle Falls near Grand Portage MN Period of record 1922 --

■■

■■■■■■

■■■■■

■■■■■■■■

■■■■■■■■

■■■■■■■

■■■■■■■

■■■■■■■■

■■■■■■■■■

■■■■■■■■■■■■■■■■■■■■■■■■■■■

■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

0.5

1.0

2.0

5.0

10.0

20.0

50.0

100.0

200.0

500.0

1000.0

1-Day Lowflow■

92 non-zero values10 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.0 20 years 0.0 10 years 0.3 5 years 13.5 2 years 70.8

RECURRENCE INTERVAL, IN YEARS

■■

■■■■■■■■■

■■■■■■■■

■■■■■

■■■■■

■■■■■■■

■■■■■

■■■■■■

■■■■■■

■■■■■■■■

■■■■■■■■■■■■■■■■■■■■■■■■■■

■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

2

4

6

10

20

40

60

100

200

400

600

1000

7-Day Lowflow■

93 non-zero values9 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.0 20 years 0.0 10 years 4.1 5 years 21.2 2 years 84.3

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■■■

■■■■■■■■■■■■■■■■

■■■■■■■■

■■■■■■■■■■■■■■

■■■■■■■■■■■

■■■■■■■■■■

■■■■■■■■■■■■■■■■■■■■■■■■■■■■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

3e-002

1e-001

3e-001

1e+000

3e+000

1e+001

3e+001

1e+002

3e+002

1e+003

30-Day Lowflow■

95 non-zero values7 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.0 20 years 0.0 10 years 4.3 5 years 27.1 2 years 139

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 05054000 -- Red River of the North at Fargo, ND

Period of record 1902 -- 2004

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

Appendix 1 37

Page 21: Station 04010500 -- Pigeon River at Middle Falls near Grand … · 2007. 2. 8. · Station 04010500 -- Pigeon River at Middle Falls near Grand Portage MN Period of record 1922 --

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■■■■■■■

■■■■■

■■■■■■■

■■■■■■

■■■■■■■

■■■

■■

■■

■■■

■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

3

4

5

6 7 8

10

20

30

40

50

60

1-Day Lowflow■

54 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 3.8 50 years 4.4 20 years 5.5 10 years 6.8 5 years 8.6 2 years 13.9

RECURRENCE INTERVAL, IN YEARS

■■■■■■■■■■■

■■■■■■■■■■

■■■■■■

■■■■■■■■■■■■■

■■■

■■■

■■■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

3

4

5

6 7 8

10

20

30

40

50

60

7-Day Lowflow■

54 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 4.8 50 years 5.4 20 years 6.5 10 years 7.7 5 years 9.5 2 years 14.8

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■

■■■■■■

■■■■■■■■■■■■■■■■■

■■■■■■■■■

■■■■■■■■■

■■■■■■

■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

3

4

5

6 7 8

10

20

30

40

50

60

30-Day Lowflow■

54 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 5.8 50 years 6.4 20 years 7.5 10 years 8.8 5 years 10.7 2 years 16.3

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 05061000 -- Buffalo River near Hawley, MN

Period of record 1946 -- 2004

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

38 USGS OFR 2007-1033

Page 22: Station 04010500 -- Pigeon River at Middle Falls near Grand … · 2007. 2. 8. · Station 04010500 -- Pigeon River at Middle Falls near Grand Portage MN Period of record 1922 --

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■■

■■■

■■■

■■

■■■■■■■■■

■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

0.005

0.010

0.020

0.050

0.100

0.200

0.500

1.000

2.000

5.000

10.000

20.000

1-Day Lowflow■

27 non-zero values27 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.0 20 years 0.0 10 years 0.0 5 years 0.0 2 years 0.0

RECURRENCE INTERVAL, IN YEARS

■■

■■

■■

■■■■■

■■■■■■■■■■

■■

■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

0.01

0.02

0.05

0.10

0.20

0.50

1.00

2.00

5.00

10.00

20.00

7-Day Lowflow■

28 non-zero values26 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.0 20 years 0.0 10 years 0.0 5 years 0.0 2 years 0.05

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■

■■

■■■■■■

■■

■■■■■■

■■■■■■■

■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

3e-004

1e-003

3e-003

1e-002

3e-002

1e-001

3e-001

1e+000

3e+000

1e+001

3e+001

30-Day Lowflow■

30 non-zero values24 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.0 20 years 0.0 10 years 0.0 5 years 0.0 2 years 0.1

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 05061500 -- South Branch Buffalo River at Sabin, MN

Period of record 1946 -- 2004

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

Appendix 1 39

Page 23: Station 04010500 -- Pigeon River at Middle Falls near Grand … · 2007. 2. 8. · Station 04010500 -- Pigeon River at Middle Falls near Grand Portage MN Period of record 1922 --

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■■

■■■■■■

■■■■■■■■■■

■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■

■■■■■■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

0.05

0.10

0.20

0.50

1.00

2.00

5.00

10.00

20.00

50.00

100.00

1-Day Lowflow■

72 non-zero values1 zero valueEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.08 20 years 0.5 10 years 1.3 5 years 3.2 2 years 11.6

RECURRENCE INTERVAL, IN YEARS

■■■■■

■■■■■■■■■

■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■

■■■■■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

0.05

0.10

0.20

0.50

1.00

2.00

5.00

10.00

20.00

50.00

100.00

7-Day Lowflow■

72 non-zero values1 zero valueEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.1 20 years 0.7 10 years 1.6 5 years 3.9 2 years 12.9

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■■

■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■

■■■■■■■

■■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

0.05

0.10

0.20

0.50

1.00

2.00

5.00

10.00

20.00

50.00

100.00

30-Day Lowflow■

72 non-zero values1 zero valueEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.3 20 years 1.2 10 years 2.5 5 years 5.4 2 years 15.5

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 05062000 -- Buffalo River near Dilworth, MN

Period of record 1932 -- 2004

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

40 USGS OFR 2007-1033

Page 24: Station 04010500 -- Pigeon River at Middle Falls near Grand … · 2007. 2. 8. · Station 04010500 -- Pigeon River at Middle Falls near Grand Portage MN Period of record 1922 --

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■■■

■■■

■■

■■■■■■■

■■■■■■■

■■■■■■

■■■■■■■■■■■■■

■■■

■■■■■■■■■■■■■■■■■■

■■■■■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

1

2

3

5

7

10

20

30

50

70

100

200

1-Day Lowflow■

73 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 1.1 50 years 1.6 20 years 2.7 10 years 4.1 5 years 6.8 2 years 16.8

RECURRENCE INTERVAL, IN YEARS

■■■■

■■

■■■■■■■■■■

■■■■■■■■■■

■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■

■■■■■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

1

2

3

5

7

10

20

30

50

70

100

200

7-Day Lowflow■

73 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 1.4 50 years 2.0 20 years 3.3 10 years 5.0 5 years 8.2 2 years 19.6

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■■■

■■■■

■■

■■■■■■■■

■■■■■■■

■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■

■■■

■■■■

■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

1

2

3

5

7

10

20

30

50

70

100

200

30-Day Lowflow■

73 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 2.0 50 years 2.8 20 years 4.4 10 years 6.6 5 years 10.4 2 years 23.7

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 05062500 -- Wild Rice River at Twin Valley, MN

Period of record 1910 -- 2004

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

Appendix 1 41

Page 25: Station 04010500 -- Pigeon River at Middle Falls near Grand … · 2007. 2. 8. · Station 04010500 -- Pigeon River at Middle Falls near Grand Portage MN Period of record 1922 --

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■■

■■

■■■

■■■■■

■■■■■■■■■■■■■■

■■■■■■■■■■■■■■■■■■■■

■■■■■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

0.02

0.05

0.10

0.20

0.50

1.00

2.00

5.00

10.00

20.00

50.00

100.00

200.00

1-Day Lowflow■

57 non-zero values1 zero valueEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.006 20 years 0.3 10 years 1.2 5 years 4.4 2 years 23.6

RECURRENCE INTERVAL, IN YEARS

■■

■■

■■

■■

■■■■

■■■■■■■

■■■■■■■■■■■

■■■■■■■■■■■■■■■■■■■■

■■■■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

0.05

0.10

0.20

0.50

1.00

2.00

5.00

10.00

20.00

50.00

100.00

200.00

7-Day Lowflow■

57 non-zero values1 zero valueEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.008 20 years 0.4 10 years 1.7 5 years 5.8 2 years 28.1

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■■■

■■

■■■■■■■

■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■

■■■■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

0.05

0.10

0.20

0.50

1.00

2.00

5.00

10.00

20.00

50.00

100.00

200.00

500.00

30-Day Lowflow■

58 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.09 50 years 0.2 20 years 1.0 10 years 2.9 5 years 8.5 2 years 35.9

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 05064000 -- Wild Rice River at Hendrum, MN

Period of record 1945 -- 2004

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

42 USGS OFR 2007-1033

Page 26: Station 04010500 -- Pigeon River at Middle Falls near Grand … · 2007. 2. 8. · Station 04010500 -- Pigeon River at Middle Falls near Grand Portage MN Period of record 1922 --

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■■■■■

■■■■■■■■■

■■■■■■■

■■■■■■■■

■■■■■■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

7

10

20

30

50

70

100

200

300

500

700

1000

2000

1-Day Lowflow■

42 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 14.4 50 years 22.4 20 years 41.6 10 years 68.8 5 years 119 2 years 287

RECURRENCE INTERVAL, IN YEARS

■■

■■■

■■■■■■■■■

■■■■■■■■■

■■■■■■■■

■■■■■■■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

7

10

20

30

50

70

100

200

300

500

700

1000

2000

7-Day Lowflow■

42 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 20.8 50 years 30.5 20 years 52.1 10 years 81.0 5 years 133 2 years 300

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■■

■■■

■■■■

■■■■■■■■■■■

■■■■■■■■

■■■■■■■■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

7

10

20

30

50

70

100

200

300

500

700

1000

2000

30-Day Lowflow■

42 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 33.7 50 years 46.7 20 years 74.3 10 years 109 5 years 168 2 years 350

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 05064500 -- Red River of the North at Halstad, MN

Period of record 1962 -- 2004

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

Appendix 1 43

Page 27: Station 04010500 -- Pigeon River at Middle Falls near Grand … · 2007. 2. 8. · Station 04010500 -- Pigeon River at Middle Falls near Grand Portage MN Period of record 1922 --

■■■

■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

1e-004

1e-003

1e-002

1e-001

1e+000

1e+001

1e+002

1e+003

1-Day Lowflow■

10 non-zero values33 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.0 20 years 0.0 10 years 0.0 5 years 0.0 2 years 0.0

RECURRENCE INTERVAL, IN YEARS

■■

■■■

■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

1e-003

3e-003

1e-002

3e-002

1e-001

3e-001

1e+000

3e+000

1e+001

3e+001

1e+002

3e+002

1e+003

7-Day Lowflow■

11 non-zero values32 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.0 20 years 0.0 10 years 0.0 5 years 0.0 2 years 0.0

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■

■■■

■■■

■■

■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

1e-004

1e-003

1e-002

1e-001

1e+000

1e+001

1e+002

1e+003

30-Day Lowflow■

14 non-zero values29 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.0 20 years 0.0 10 years 0.0 5 years 0.0 2 years 0.0

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 05067500 -- Marsh River near Shelly, MN

Period of record 1945 -- 2004

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

44 USGS OFR 2007-1033

Page 28: Station 04010500 -- Pigeon River at Middle Falls near Grand … · 2007. 2. 8. · Station 04010500 -- Pigeon River at Middle Falls near Grand Portage MN Period of record 1922 --

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■■■■■■■■■■■■■■■

■■■■■■■■■■■■■■■

■■■■

■■■■■■

■■

■■■■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

0.8

1.0

2.0

3.0

4.0

5.0 6.0

8.0

10.0

20.0

30.0

40.0

1-Day Lowflow■

56 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 1.6 50 years 2.0 20 years 2.7 10 years 3.5 5 years 4.8 2 years 8.2

RECURRENCE INTERVAL, IN YEARS

■■

■■■■■■■■■■

■■■■■■■■■■

■■■■■■■■■■■■■■■

■■■

■■■■■■■■

■■■■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

0.8

1.0

2.0

3.0

4.0

5.0 6.0

8.0

10.0

20.0

30.0

40.0

7-Day Lowflow■

56 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 1.8 50 years 2.3 20 years 3.0 10 years 3.9 5 years 5.2 2 years 8.9

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■■■■■

■■■■■■■

■■■■■■■■■

■■■■■■■■■■■■■■■■

■■■■■■■■

■■■■■

■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

0.8

1.0

2.0

3.0

4.0

5.0 6.0

8.0

10.0

20.0

30.0

40.0

30-Day Lowflow■

56 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 2.6 50 years 3.0 20 years 3.9 10 years 4.8 5 years 6.2 2 years 10.0

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 05069000 -- Sand Hill River at Climax, MN

Period of record 1944 -- 2004

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

Appendix 1 45

Page 29: Station 04010500 -- Pigeon River at Middle Falls near Grand … · 2007. 2. 8. · Station 04010500 -- Pigeon River at Middle Falls near Grand Portage MN Period of record 1922 --

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■■

■■

■■

■■■

■■■■■■■■■

■■■■■■■■■■■■■■

■■■■■■■■■■■■■■■■■■

■■■

■■■■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

0.2

0.5

1.0

2.0

5.0

10.0

20.0

50.0

100.0

200.0

500.0

1000.0

1-Day Lowflow■

62 non-zero values2 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.0 20 years 0.9 10 years 3.9 5 years 12.7 2 years 63.0

RECURRENCE INTERVAL, IN YEARS

■■

■■

■■■■■

■■■■

■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■

■■■■■■■■

■■■■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

1e-002

3e-002

1e-001

3e-001

1e+000

3e+000

1e+001

3e+001

1e+002

3e+002

1e+003

7-Day Lowflow■

63 non-zero values1 zero valueEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.02 20 years 0.9 10 years 4.0 5 years 16.6 2 years 97.4

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■

■■

■■■

■■■

■■■

■■■■■■■■■■■■■

■■■■■■■■■■■

■■■■■■■■■■■■■■■■■■■■■■■■■

■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

0.2

0.5

1.0

2.0

5.0

10.0

20.0

50.0

100.0

200.0

500.0

1000.0

30-Day Lowflow■

64 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.4 50 years 1.1 20 years 4.0 10 years 10.8 5 years 30.2 2 years 135

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 05074500 -- Red Lake River near Red Lake, MN

Period of record 1934 -- 2004

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

46 USGS OFR 2007-1033

Page 30: Station 04010500 -- Pigeon River at Middle Falls near Grand … · 2007. 2. 8. · Station 04010500 -- Pigeon River at Middle Falls near Grand Portage MN Period of record 1922 --

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■■■■■■

■■■■■■■■■■■■■

■■■■■■■■■■■■■■■■■■■■■

■■■■■■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

1

2

5

10

20

50

100

200

500

1000

2000

1-Day Lowflow■

63 non-zero values7 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.0 20 years 0.0 10 years 0.0 5 years 23.0 2 years 125

RECURRENCE INTERVAL, IN YEARS

■■

■■■■

■■■■■■■■■■■■■■■

■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

1e-002

3e-002

1e-001

3e-001

1e+000

3e+000

1e+001

3e+001

1e+002

3e+002

1e+003

7-Day Lowflow■

66 non-zero values4 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.0 20 years 0.0 10 years 2.6 5 years 22.5 2 years 189

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■

■■■■

■■■■■■■■■■■■■■■■■■■■■■■

■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

0.2

0.5

1.0

2.0

5.0

10.0

20.0

50.0

100.0

200.0

500.0

1000.0

2000.0

30-Day Lowflow■

66 non-zero values4 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.0 20 years 0.0 10 years 8.5 5 years 39.5 2 years 220

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 05075000 -- Red Lake River at High Landing near Goodridge, MN

Period of record 1931 -- 2000

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

Appendix 1 47

Page 31: Station 04010500 -- Pigeon River at Middle Falls near Grand … · 2007. 2. 8. · Station 04010500 -- Pigeon River at Middle Falls near Grand Portage MN Period of record 1922 --

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■■■

■■■■

■■■■■■

■■■■

■■■

■■

■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

0.01

0.02

0.05

0.10

0.20

0.50

1.00

2.00

5.00

10.00

20.00

50.00

1-Day Lowflow■

32 non-zero values51 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.0 20 years 0.0 10 years 0.0 5 years 0.0 2 years 0.0

RECURRENCE INTERVAL, IN YEARS

■■■

■■■■■

■■■■■■■■

■■■■■

■■■■■■■

■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

0.001

0.003

0.010

0.030

0.100

0.300

1.000

3.000

10.000

30.000

7-Day Lowflow■

36 non-zero values47 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.0 20 years 0.0 10 years 0.0 5 years 0.0 2 years 0.0

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■

■■■

■■■■■■■

■■■■■■■■■■■

■■■■■■

■■■

■■■

■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

3e-003

1e-002

3e-002

1e-001

3e-001

1e+000

3e+000

1e+001

3e+001

1e+002

30-Day Lowflow■

42 non-zero values41 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.0 20 years 0.0 10 years 0.0 5 years 0.0 2 years 0.008

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 05076000 -- Thief River near Thief River Falls, MN

Period of record 1910 -- 2004

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

48 USGS OFR 2007-1033

Page 32: Station 04010500 -- Pigeon River at Middle Falls near Grand … · 2007. 2. 8. · Station 04010500 -- Pigeon River at Middle Falls near Grand Portage MN Period of record 1922 --

■■■

■■■■■

■■■■■■■■■■■■

■■

■■■■■■■■■■■■■■■■■■■■■■■■■■■■

■■■■

■■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

2

3

4

5 6

8

10

20

30

40

50 60

80

100

1-Day Lowflow■

61 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 3.6 50 years 5.0 20 years 7.8 10 years 11.2 5 years 16.3 2 years 28.8

RECURRENCE INTERVAL, IN YEARS

■■■

■■■■■■■■■■■■■■■■■■■

■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■

■■■■■

■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

2

3

4

5 6

8

10

20

30

40

50 60

80

100

7-Day Lowflow■

61 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 4.5 50 years 6.4 20 years 10.2 10 years 14.6 5 years 21.1 2 years 35.4

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■

■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■

■■■■■■■■■■■■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

2

3

4

5 6

8

10

20

30

40

50 60

80

100

30-Day Lowflow■

61 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 7.8 50 years 10.2 20 years 14.7 10 years 19.5 5 years 26.4 2 years 41.1

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 05078000 -- Clearwater River at Plummer, MN

Period of record 1940 -- 2004

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

Appendix 1 49

Page 33: Station 04010500 -- Pigeon River at Middle Falls near Grand … · 2007. 2. 8. · Station 04010500 -- Pigeon River at Middle Falls near Grand Portage MN Period of record 1922 --

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■■■

■■

■■■■■■■■■■■

■■■■■■

■■■■■■■■■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

0.01

0.02

0.05

0.10

0.20

0.50

1.00

2.00

5.00

10.00

20.00

50.00

1-Day Lowflow■

39 non-zero values4 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.0 20 years 0.0 10 years 0.009 5 years 0.2 2 years 1.7

RECURRENCE INTERVAL, IN YEARS

■■

■■■■■

■■

■■■■

■■■■■

■■■

■■■■■■■

■■■■■■■■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

0.02

0.05

0.10

0.20

0.50

1.00

2.00

5.00

10.00

20.00

50.00

7-Day Lowflow■

39 non-zero values4 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.0 20 years 0.0 10 years 0.03 5 years 0.4 2 years 2.3

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■

■■

■■■■■■■■■

■■■■■■■■■

■■■■■■■■■

■■■■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

0.02

0.05

0.10

0.20

0.50

1.00

2.00

5.00

10.00

20.00

50.00

30-Day Lowflow■

40 non-zero values3 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.0 20 years 0.0 10 years 0.2 5 years 0.9 2 years 4.5

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 05078230 -- Lost River at Oklee, MN

Period of record 1961 -- 2004

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

50 USGS OFR 2007-1033

Page 34: Station 04010500 -- Pigeon River at Middle Falls near Grand … · 2007. 2. 8. · Station 04010500 -- Pigeon River at Middle Falls near Grand Portage MN Period of record 1922 --

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■■■

■■

■■■■■■

■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

0.05

0.10

0.20

0.50

1.00

2.00

5.00

10.00

20.00

50.00

100.00

200.00

1-Day Lowflow■

75 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.2 50 years 0.6 20 years 2.2 10 years 5.8 5 years 14.8 2 years 43.7

RECURRENCE INTERVAL, IN YEARS

■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■

■■■■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

0.05

0.10

0.20

0.50

1.00

2.00

5.00

10.00

20.00

50.00

100.00

200.00

7-Day Lowflow■

75 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 1.2 50 years 2.5 20 years 6.5 10 years 12.8 5 years 24.5 2 years 50.9

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■

■■■■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

0.05

0.10

0.20

0.50

1.00

2.00

5.00

10.00

20.00

50.00

100.00

200.00

30-Day Lowflow■

75 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 2.0 50 years 3.9 20 years 9.2 10 years 17.3 5 years 31.1 2 years 59.9

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 05078500 -- Clearwater River at Red Lake Falls, MN

Period of record 1910 -- 2004

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

Appendix 1 51

Page 35: Station 04010500 -- Pigeon River at Middle Falls near Grand … · 2007. 2. 8. · Station 04010500 -- Pigeon River at Middle Falls near Grand Portage MN Period of record 1922 --

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■■

■■

■■■■■

■■■■■■■■■■■

■■■■■■■■

■■■■■■■■■■■■■■■

■■■■■■■■■■

■■■■■■

■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■

■■■■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

2

5

10

20

50

100

200

500

1000

2000

1-Day Lowflow■

102 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 3.1 50 years 5.8 20 years 13.7 10 years 27.5 5 years 58.6 2 years 194

RECURRENCE INTERVAL, IN YEARS

■■■

■■■

■■

■■■■■■

■■■■■■■■■■■■■■■

■■■■■■■■■■

■■■■■

■■■■■■■■■■■■

■■■■■

■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

2

5

10

20

50

100

200

500

1000

2000

7-Day Lowflow■

102 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 4.3 50 years 8.1 20 years 19.0 10 years 37.8 5 years 79.3 2 years 251

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■■

■■

■■

■■■■■■■■■■■■■■■■■■■■■

■■■■■■■■■■

■■■■■■

■■■■■■■■

■■■■■■■■■■■■■

■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

2

5

10

20

50

100

200

500

1000

2000

30-Day Lowflow■

102 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 6.4 50 years 11.5 20 years 26.2 10 years 50.4 5 years 102 2 years 308

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 05079000 -- Red Lake River at Crookston, MN

Period of record 1902 -- 2004

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

52 USGS OFR 2007-1033

Page 36: Station 04010500 -- Pigeon River at Middle Falls near Grand … · 2007. 2. 8. · Station 04010500 -- Pigeon River at Middle Falls near Grand Portage MN Period of record 1922 --

■■

■■■■

■■

■■■■■■■■■■■■■■

■■■■■■■■■■■■■■■

■■■■■■■■

■■■■■■■■■■■

■■■■■■■■■■■■■

■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

1

2

5

10

20

50

100

200

500

1000

2000

5000

1-Day Lowflow■

100 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 3.8 50 years 9.0 20 years 27.8 10 years 66.2 5 years 160 2 years 543

RECURRENCE INTERVAL, IN YEARS

■■■■

■■■■■■■■■

■■■■■■■■■■■■■■■■■■■■■■■■

■■■■■■■■

■■■■■■■■■■■■■■■

■■■■■■■■

■■■■■■■■■■■■■■■■■■■■■■■■■■■■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

1

2

5

10

20

50

100

200

500

1000

2000

5000

7-Day Lowflow■

100 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 7.5 50 years 15.4 20 years 40.3 10 years 85.3 5 years 186 2 years 572

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■

■■■

■■■■■■■■■■■■■■■■■■■■■■■

■■■■■■■■■

■■■■■■■■■■

■■■■■■■■■■■■■■■

■■■■■■■

■■■■■■■■■■■■■■■■■■■■■■■■■■■■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

1

2

5

10

20

50

100

200

500

1000

2000

5000

30-Day Lowflow■

100 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 9.8 50 years 19.5 20 years 49.4 10 years 102 5 years 216 2 years 638

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 05082500 -- Red River of the North at Grand Forks, ND

Period of record 1905 -- 2004

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

Appendix 1 53

Page 37: Station 04010500 -- Pigeon River at Middle Falls near Grand … · 2007. 2. 8. · Station 04010500 -- Pigeon River at Middle Falls near Grand Portage MN Period of record 1922 --

■■

■■

■■■

■■■

■■■■■

■■■■

■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

0.01

0.02

0.05

0.10

0.20

0.50

1.00

2.00

5.00

10.00

20.00

1-Day Lowflow■

25 non-zero values27 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.0 20 years 0.0 10 years 0.0 5 years 0.0 2 years 0.0

RECURRENCE INTERVAL, IN YEARS

■■

■■■■

■■

■■

■■

■■■

■■■■

■■■

■■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

0.01

0.02

0.05

0.10

0.20

0.50

1.00

2.00

5.00

10.00

7-Day Lowflow■

29 non-zero values23 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.0 20 years 0.0 10 years 0.0 5 years 0.0 2 years 0.07

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■■■■■■

■■■■

■■■■■■■■■■■■

■■■■

■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

3e-004

1e-003

3e-003

1e-002

3e-002

1e-001

3e-001

1e+000

3e+000

1e+001

30-Day Lowflow■

34 non-zero values18 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.0 20 years 0.0 10 years 0.0 5 years 0.0 2 years 0.2

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 05087500 -- Middle River at Argyle, MN

Period of record 1946 -- 2004

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

54 USGS OFR 2007-1033

Page 38: Station 04010500 -- Pigeon River at Middle Falls near Grand … · 2007. 2. 8. · Station 04010500 -- Pigeon River at Middle Falls near Grand Portage MN Period of record 1922 --

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■■

■■■■

■■■■■

■■■■■■

■■■■■■

■■■

■■■■■■■

■■■■■■■■■■■■

■■■

■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

100

200

300

400

500

600 700

1000

2000

3000

1-Day Lowflow■

55 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 69.0 50 years 94.7 20 years 149 10 years 216 5 years 331 2 years 683

RECURRENCE INTERVAL, IN YEARS

■■■

■■■

■■■■

■■■■■■

■■■■

■■■

■■■■

■■■

■■■■■■■■■■■■■■■■■■■■■■■

■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

100

200

300

400

500

600 700

1000

2000

3000

7-Day Lowflow■

55 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 74.2 50 years 102 20 years 161 10 years 235 5 years 359 2 years 738

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■

■■

■■

■■

■■■■

■■

■■■■

■■■■■■■■■

■■■■

■■■■■■■■■■■■■■■■■■■■

■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

100

200

300

400

500

600 700

1000

2000

3000

30-Day Lowflow■

55 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 92.5 50 years 126 20 years 195 10 years 280 5 years 422 2 years 844

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 05092000 -- Red River of the North at Drayton, ND

Period of record 1937 -- 2004

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

Appendix 1 55

Page 39: Station 04010500 -- Pigeon River at Middle Falls near Grand … · 2007. 2. 8. · Station 04010500 -- Pigeon River at Middle Falls near Grand Portage MN Period of record 1922 --

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■■■■■

■■■■■

■■■■■■■■■■■■

■■■■■■■■■■■■■■

■■■■■■■■

■■■

■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

0.01

0.02

0.04

0.06

0.10

0.20

0.40

0.60

1.00

2.00

4.00

6.00

1-Day Lowflow■

55 non-zero values2 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.0 20 years 0.04 10 years 0.1 5 years 0.2 2 years 0.8

RECURRENCE INTERVAL, IN YEARS

■■

■■■■■

■■■■

■■■

■■■■

■■■■■■■■■■■■■■■■■■■■

■■■■■■■■

■■■■■■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

0.02

0.04

0.06

0.10

0.20

0.40

0.60

1.00

2.00

4.00

6.00

7-Day Lowflow■

56 non-zero values1 zero valueEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.007 20 years 0.06 10 years 0.1 5 years 0.3 2 years 0.9

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■

■■

■■

■■■■■

■■

■■■

■■■■■■

■■■■■■■■■■■■■■■■

■■■■■■

■■■■■■■■■

■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

0.05

0.07

0.10

0.20

0.30

0.50

0.70

1.00

2.00

3.00

5.00

7.00

10.00

30-Day Lowflow■

57 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.06 50 years 0.1 20 years 0.2 10 years 0.3 5 years 0.5 2 years 1.3

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 05094000 -- South Branch Two Rivers at Lake Bronson, MN

Period of record 1930 -- 2004

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

56 USGS OFR 2007-1033

Page 40: Station 04010500 -- Pigeon River at Middle Falls near Grand … · 2007. 2. 8. · Station 04010500 -- Pigeon River at Middle Falls near Grand Portage MN Period of record 1922 --

Station 05096000 – North Branch Two Rivers near Lancaster, MN Period of Record 1929–1955

The 1-, 7- and 30-day low-flow discharges were 0.00 ft3/s for all years of record at this continuous-record streamflow gaging station. As a result, the 1-, 7-, and 30-day low-flow statistics were not calculated and the low-flow discharges were not graphed for this station.

Appendix 1 57

Page 41: Station 04010500 -- Pigeon River at Middle Falls near Grand … · 2007. 2. 8. · Station 04010500 -- Pigeon River at Middle Falls near Grand Portage MN Period of record 1922 --

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■■■■

■■■■■■■■■■■■■■

■■■■■■■■■■

■■■■■■■■■■■■■■

■■■■■■■■■■■■■■■■■■

■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■

■■■■■■■■■■■■■■■■■■■■■■■■■■

■■■■■■■■■■■■■■■■■■

■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■

■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

0.5

1.0

2.0

5.0

10.0

20.0

50.0

100.0

200.0

500.0

1000.0

2000.0

5000.0

1-Day Lowflow■

91 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 4.4 50 years 10.2 20 years 31.7 10 years 75.3 5 years 181 2 years 598

RECURRENCE INTERVAL, IN YEARS

■■

■■

■■■■■■

■■■■

■■■■■■■■■■■■

■■■■■■■■■■■■■■■■

■■■■■■■■■■

■■■■■■■■■■■■■■■■■■■■■■■■■■■■

■■■■■■■■■■■■■■■■■■■■■■

■■■■■■■■■■■■■■■■■■■■■■■■

■■■■■■■■■■■■■■■■■■■■■■

■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■

■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

0.5

1.0

2.0

5.0

10.0

20.0

50.0

100.0

200.0

500.0

1000.0

2000.0

5000.0

7-Day Lowflow■

91 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 5.2 50 years 11.9 20 years 36.2 10 years 84.4 5 years 199 2 years 634

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■

■■

■■■■■■■■

■■

■■■■■■■■■■■■■■■■■■■■■■■■■■

■■■■■■■■■■

■■■■■■■■■■■■■■■■■■■■■■■■

■■■■■■■■■■■■■■■■■■■■■■■■

■■■■■■■■■■■■■■■■■■■■■■■■

■■■■■■■■■■■■■■

■■■■■■■■■■■■■■■■■■■■■■■■■■

■■■■■■■■■■■■■■■■■■■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

0.5

1.0

2.0

5.0

10.0

20.0

50.0

100.0

200.0

500.0

1000.0

2000.0

5000.0

30-Day Lowflow■

91 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 6.2 50 years 14.3 20 years 42.9 10 years 99.0 5 years 230 2 years 712

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 05102500 -- Red River of the North at Emerson, Manitoba, Canada

Period of record 1913 -- 2004

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

58 USGS OFR 2007-1033

Page 42: Station 04010500 -- Pigeon River at Middle Falls near Grand … · 2007. 2. 8. · Station 04010500 -- Pigeon River at Middle Falls near Grand Portage MN Period of record 1922 --

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■■

■■■■

■■■■■

■■■■■■■■

■■■■■■■■■■■■

■■■■■■

■■■■■■■

■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

0.01

0.02

0.05

0.10

0.20

0.50

1.00

2.00

5.00

10.00

20.00

1-Day Lowflow■

51 non-zero values6 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.0 20 years 0.0 10 years 0.0 5 years 0.2 2 years 1.5

RECURRENCE INTERVAL, IN YEARS

■■

■■■■

■■

■■■■■■■■

■■■■■■■■■■■■■■■■■■■■■

■■■■■■■■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

0.002

0.005

0.010

0.020

0.050

0.100

0.200

0.500

1.000

2.000

5.000

10.000

20.000

7-Day Lowflow■

53 non-zero values4 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.0 20 years 0.0 10 years 0.02 5 years 0.2 2 years 1.8

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■

■■

■■

■■■■■■■■■■

■■■■■■■■■

■■■■■■■■■■■■■

■■■■■■■■■■■■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

0.005

0.010

0.020

0.050

0.100

0.200

0.500

1.000

2.000

5.000

10.000

20.000

30-Day Lowflow■

54 non-zero values3 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.0 20 years 0.0 10 years 0.09 5 years 0.5 2 years 3.2

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 05104500 -- Roseau River below South Fork near Malung, MN

Period of record 1948 -- 2004

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

Appendix 1 59

Page 43: Station 04010500 -- Pigeon River at Middle Falls near Grand … · 2007. 2. 8. · Station 04010500 -- Pigeon River at Middle Falls near Grand Portage MN Period of record 1922 --

■■■■

■■

■■

■■

■■■■

■■■■

■■■■■■

■■■■■■■■

■■■■

■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

0.03

0.05

0.07

0.10

0.20

0.30

0.50

0.70

1.00

2.00

3.00

5.00

1-Day Lowflow■

40 non-zero values5 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.0 20 years 0.0 10 years 0.0 5 years 0.2 2 years 0.8

RECURRENCE INTERVAL, IN YEARS

■■

■■

■■

■■■■■■■■■■■

■■■

■■■■■■■

■■■■■■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

0.06

0.080.10

0.20

0.30

0.40

0.60

0.801.00

2.00

3.00

4.00

6.00

7-Day Lowflow■

40 non-zero values5 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.0 20 years 0.0 10 years 0.0 5 years 0.3 2 years 0.9

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■

■■

■■

■■■■

■■■■■■■■■■■■■■■■■■■■■

■■■■■■■■

■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

0.01

0.02

0.04

0.06

0.10

0.20

0.40

0.60

1.00

2.00

4.00

6.00

30-Day Lowflow■

45 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.02 50 years 0.04 20 years 0.1 10 years 0.2 5 years 0.4 2 years 1.3

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 05106000 -- Sprague Creek near Sprague, Manitoba, Canada

Period of record 1930 -- 2004

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

60 USGS OFR 2007-1033

Page 44: Station 04010500 -- Pigeon River at Middle Falls near Grand … · 2007. 2. 8. · Station 04010500 -- Pigeon River at Middle Falls near Grand Portage MN Period of record 1922 --

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■■

■■■■■

■■■■

■■

■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

0.80.9

2.0

3.0

4.0

5.0

6.0

7.0

8.09.0

1-Day Lowflow■

23 non-zero values1 zero valueEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.0 20 years 0.8 10 years 1.6 5 years 2.3 2 years 4.0

RECURRENCE INTERVAL, IN YEARS

■■

■■

■■

■■■■■

■■■■■

■■

■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

0.80.9

2.0

3.0

4.0

5.0

6.0

7.0

8.09.0

7-Day Lowflow■

23 non-zero values1 zero valueEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.0 20 years 0.8 10 years 1.8 5 years 2.7 2 years 4.5

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■

■■

■■■■

■■■■

■■■

■■■■■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

0.6

0.70.8

1.0

2.0

3.0

4.0

5.0

6.0

7.08.0 30-Day Lowflow

24 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.7 50 years 1.0 20 years 1.5 10 years 2.2 5 years 3.2 2 years 5.3

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 05107000 -- Pine Creek near Pine Creek, MN

Period of record 1929 -- 1953

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

Appendix 1 61

Page 45: Station 04010500 -- Pigeon River at Middle Falls near Grand … · 2007. 2. 8. · Station 04010500 -- Pigeon River at Middle Falls near Grand Portage MN Period of record 1922 --

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■■

■■■■

■■■■■■■■■

■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■

■■■■■■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

0.02

0.05

0.10

0.20

0.50

1.00

2.00

5.00

10.00

20.00

50.00

1-Day Lowflow■

66 non-zero values4 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.0 20 years 0.0 10 years 0.4 5 years 1.4 2 years 5.6

RECURRENCE INTERVAL, IN YEARS

■■

■■

■■

■■■■

■■■■■■■■■■■

■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■

■■■■■■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

0.02

0.05

0.10

0.20

0.50

1.00

2.00

5.00

10.00

20.00

50.00

7-Day Lowflow■

69 non-zero values1 zero valueEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.02 20 years 0.2 10 years 0.5 5 years 1.5 2 years 5.8

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■

■■■

■■

■■■■

■■

■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■

■■■■■■

■■■■■■■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

0.2

0.3

0.5

0.7

1.0

2.0

3.0

5.0

7.0

10.0

20.0

30.0

30-Day Lowflow■

69 non-zero values1 zero valueEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.1 20 years 0.6 10 years 1.3 5 years 2.7 2 years 7.6

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 05107500 -- Roseau River at Ross, MN

Period of record 1929 -- 2004

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

62 USGS OFR 2007-1033

Page 46: Station 04010500 -- Pigeon River at Middle Falls near Grand … · 2007. 2. 8. · Station 04010500 -- Pigeon River at Middle Falls near Grand Portage MN Period of record 1922 --

■■

■■■■■

■■■■■■■■■■■■■

■■■■■■■■■■■■■■■■■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

0.02

0.05

0.10

0.20

0.50

1.00

2.00

5.00

10.00

20.00

50.00

1-Day Lowflow■

46 non-zero values1 zero valueEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.0 20 years 0.1 10 years 0.6 5 years 2.2 2 years 11.2

RECURRENCE INTERVAL, IN YEARS

■■

■■

■■■

■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

0.02

0.05

0.10

0.20

0.50

1.00

2.00

5.00

10.00

20.00

50.00

7-Day Lowflow■

47 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.02 50 years 0.06 20 years 0.3 10 years 0.8 5 years 2.4 2 years 11.3

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■

■■

■■■■

■■■■■■■■■■■■■■■■■

■■■■■■■■■■■■■■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

0.02

0.05

0.10

0.20

0.50

1.00

2.00

5.00

10.00

20.00

50.00

100.00

30-Day Lowflow■

47 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.04 50 years 0.1 20 years 0.4 10 years 1.3 5 years 3.5 2 years 14.6

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 05112000 -- Roseau River below State Ditch 51 near Caribou, MN

Period of record 1918 -- 2004

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

Appendix 1 63

Page 47: Station 04010500 -- Pigeon River at Middle Falls near Grand … · 2007. 2. 8. · Station 04010500 -- Pigeon River at Middle Falls near Grand Portage MN Period of record 1922 --

■■■

■■■

■■■■■■■

■■■

■■■■■■■■■

■■■■■■■■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

4

5

6 7

10

20

30

40

50

60 70

100

1-Day Lowflow■

37 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 4.4 50 years 6.6 20 years 11.0 10 years 16.2 5 years 23.9 2 years 39.9

RECURRENCE INTERVAL, IN YEARS

■■■

■■■

■■■■■■■

■■■■■■■■■■■■

■■■■■■■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

4

5

6 7

10

20

30

40

50

60 70

100

7-Day Lowflow■

37 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 4.6 50 years 6.7 20 years 11.3 10 years 16.8 5 years 24.8 2 years 41.6

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■

■■

■■■

■■■■■■■

■■■■■■■■■■■■■■■■■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

4

5

6 7

10

20

30

40

50

60 70

100

30-Day Lowflow■

37 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 5.0 50 years 7.4 20 years 12.4 10 years 18.5 5 years 27.5 2 years 47.3

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 05124480 -- Kawishiwi River near Ely, MN

Period of record 1967 -- 2004

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

64 USGS OFR 2007-1033

Page 48: Station 04010500 -- Pigeon River at Middle Falls near Grand … · 2007. 2. 8. · Station 04010500 -- Pigeon River at Middle Falls near Grand Portage MN Period of record 1922 --

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■■

■■■■■

■■

■■■■■■■■■

■■■■■■■■■■■■■■

■■■■■■■■■■■■■

■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

6

8

10

20

30

40

50 60

80

100

200

300

1-Day Lowflow■

52 non-zero values31 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.0 20 years 0.0 10 years 0.0 5 years 0.0 2 years 44.6

RECURRENCE INTERVAL, IN YEARS

■■

■■

■■

■■■■

■■■■

■■■■■■■■■■■■■■■

■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

8

10

20

30

40

60

80

100

200

300

400

7-Day Lowflow■

79 non-zero values4 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.0 20 years 4.6 10 years 42.9 5 years 84.1 2 years 182

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■

■■

■■■

■■■■■■■■■■

■■■■■■

■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■

■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

10

20

30

40

50 60

80

100

200

300

400

500600

30-Day Lowflow■

83 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 26.0 50 years 37.4 20 years 61.4 10 years 90.2 5 years 135 2 years 240

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 05127000 -- Kawishiwi River near Winton, MN

Period of record 1906 -- 2004

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

Appendix 1 65

Page 49: Station 04010500 -- Pigeon River at Middle Falls near Grand … · 2007. 2. 8. · Station 04010500 -- Pigeon River at Middle Falls near Grand Portage MN Period of record 1922 --

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■■

■■■

■■■■■■■■■

■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■

■■■■■■■■■■■■■■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

50

60 70 80

100

200

300

400

500

600 700 800

1000

1-Day Lowflow■

71 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 73.5 50 years 97.4 20 years 142 10 years 190 5 years 256 2 years 390

RECURRENCE INTERVAL, IN YEARS

■■

■■■■

■■■■■■■■■

■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■

■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

50

60 70 80

100

200

300

400

500

600 700 800

1000

7-Day Lowflow■

71 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 76.1 50 years 100 20 years 146 10 years 194 5 years 261 2 years 398

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■

■■

■■■

■■■■■■■■■

■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■

■■■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

50

60 70 80

100

200

300

400

500

600 700 800

1000

30-Day Lowflow■

71 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 83.4 50 years 109 20 years 157 10 years 208 5 years 280 2 years 436

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 05127500 -- Basswood River near Winton, MN

Period of record 1932 -- 2004

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

66 USGS OFR 2007-1033

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■■■

■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

0.1

0.2

0.5

1.0

2.0

5.0

10.0

20.0

50.0

100.0

200.0

1-Day Lowflow■

56 non-zero values1 zero valueEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.03 20 years 2.3 10 years 8.2 5 years 24.1 2 years 76.4

RECURRENCE INTERVAL, IN YEARS

■■■

■■■■■■■■

■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■

■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

0.1

0.2

0.5

1.0

2.0

5.0

10.0

20.0

50.0

100.0

200.0

7-Day Lowflow■

57 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.3 50 years 0.9 20 years 3.6 10 years 10.0 5 years 26.3 2 years 81.4

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■

■■■■■■■■■■■

■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

0.2

0.5

1.0

2.0

5.0

10.0

20.0

50.0

100.0

200.0

500.0

30-Day Lowflow■

57 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.7 50 years 2.0 20 years 6.9 10 years 17.1 5 years 39.5 2 years 98.3

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 05129000 -- Vermilion River below Vermilion Lake near Tower, MN

Period of record 1912 -- 1982

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

Appendix 1 67

Page 51: Station 04010500 -- Pigeon River at Middle Falls near Grand … · 2007. 2. 8. · Station 04010500 -- Pigeon River at Middle Falls near Grand Portage MN Period of record 1922 --

■■

■■

■■

■■

■■■

■■■■

■■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

30

40

50

60

70

80 90100

200

300

1-Day Lowflow■

24 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 22.9 50 years 28.5 20 years 39.1 10 years 51.1 5 years 69.6 2 years 120

RECURRENCE INTERVAL, IN YEARS

■■

■■■

■■

■■

■■■■■

■■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

30

40

50

60

70

80 90100

200

300

7-Day Lowflow■

24 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 25.0 50 years 31.1 20 years 42.5 10 years 55.4 5 years 75.0 2 years 127

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■■■

■■

■■

■■■

■■

■■■

■■■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

30

40

50

60

70

80 90100

200

300

30-Day Lowflow■

24 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 31.6 50 years 39.3 20 years 53.6 10 years 69.5 5 years 93.3 2 years 154

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 05129115 -- Vermilion River near Crane Lake, MN

Period of record 1980 -- 2004

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

68 USGS OFR 2007-1033

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■■■

■■■

■■■■

■■■

■■■■■■■■■

■■■■■■■■■

■■■■■■■

■■■■■■■■■■■■■■■

■■■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

2

3

4

5

6 7

10

20

30

40

50

1-Day Lowflow■

61 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 3.2 50 years 4.2 20 years 5.9 10 years 7.9 5 years 10.7 2 years 17.5

RECURRENCE INTERVAL, IN YEARS

■■■

■■■■

■■■■

■■■■■

■■■■■■■■■■■■■■■■■■■■■■

■■■■■■■■■■■■■■■

■■■

■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

2

3

4

5

6 7

10

20

30

40

50

7-Day Lowflow■

61 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 3.5 50 years 4.5 20 years 6.3 10 years 8.4 5 years 11.3 2 years 18.1

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■

■■■■■■■

■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■

■■■■■■■■■■■■■■

■■

■■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

2

3

4

5

6 7

10

20

30

40

50

30-Day Lowflow■

61 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 4.6 50 years 5.7 20 years 7.7 10 years 9.9 5 years 12.9 2 years 20.0

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 05130500 -- Sturgeon River near Chisholm, MN

Period of record 1943 -- 2004

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

Appendix 1 69

Page 53: Station 04010500 -- Pigeon River at Middle Falls near Grand … · 2007. 2. 8. · Station 04010500 -- Pigeon River at Middle Falls near Grand Portage MN Period of record 1922 --

■■

■■

■■■

■■■■

■■■■■■

■■■■■■■■

■■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

0.5 0.6

0.8

1.0

2.0

3.0

4.0

5.0 6.0

8.0

10.0

20.0

1-Day Lowflow■

31 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.6 50 years 0.9 20 years 1.5 10 years 2.3 5 years 3.6 2 years 6.6

RECURRENCE INTERVAL, IN YEARS

■■

■■■

■■■

■■■■■■■■

■■

■■■■■■■■

■■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

0.5 0.6

0.8

1.0

2.0

3.0

4.0

5.0 6.0

8.0

10.0

20.0

7-Day Lowflow■

31 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 1.3 50 years 1.6 20 years 2.3 10 years 3.0 5 years 4.0 2 years 6.5

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■

■■■

■■■■■■■■■■■■

■■■■■■

■■■■■

■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

0.5 0.6

0.8

1.0

2.0

3.0

4.0

5.0 6.0

8.0

10.0

20.0

30-Day Lowflow■

31 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 2.3 50 years 2.7 20 years 3.3 10 years 4.0 5 years 5.0 2 years 7.2

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 05131000 -- Dark River near Chisholm, MN

Period of record 1943 -- 1979

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

70 USGS OFR 2007-1033

Page 54: Station 04010500 -- Pigeon River at Middle Falls near Grand … · 2007. 2. 8. · Station 04010500 -- Pigeon River at Middle Falls near Grand Portage MN Period of record 1922 --

■■

■■■■■■■■■■

■■■■■■■■■■■■■

■■■■■■■■■■■■■■■■■■■■■■■

■■■■■■■■■■■■■■■■■■■■■■■■■■

■■■

■■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

20

30

40

50

60

70 80

100

200

300

1-Day Lowflow■

81 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 23.8 50 years 27.8 20 years 34.8 10 years 42.2 5 years 53.0 2 years 80.0

RECURRENCE INTERVAL, IN YEARS

■■

■■■■■■■■■

■■■■

■■■■■■■■■■■■■■■■■■■

■■■■■■■■■■■

■■■■■■■■■■■■■■■■■■■■■■■■■■■

■■

■■■■■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

20

30

40

50

60

70 80

100

200

300

7-Day Lowflow■

81 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 24.8 50 years 28.9 20 years 36.2 10 years 43.9 5 years 54.9 2 years 82.7

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■

■■■■■■■■■■■■■■■

■■■■■■■■■■■■■■■■■■■■■■■■■■

■■■■■■■■■■■■■■■■■■■■■■■■■■■■■

■■■■■■■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

20

30

40

50

60

70 80

100

200

300

30-Day Lowflow■

81 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 29.4 50 years 33.7 20 years 41.3 10 years 49.3 5 years 61.0 2 years 91.0

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 05131500 -- Little Fork River at Littlefork, MN

Period of record 1910 -- 2004

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

Appendix 1 71

Page 55: Station 04010500 -- Pigeon River at Middle Falls near Grand … · 2007. 2. 8. · Station 04010500 -- Pigeon River at Middle Falls near Grand Portage MN Period of record 1922 --

■■■

■■■■■■■■

■■■

■■■■■■■■■■

■■■■■■■■■■■■■

■■■■■■■■■■■■■■■■■■■■■■■

■■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

10

20

30

40

50 60

80

100

200

300

400

1-Day Lowflow■

66 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 13.8 50 years 17.7 20 years 25.3 10 years 34.2 5 years 48.2 2 years 87.4

RECURRENCE INTERVAL, IN YEARS

■■■■

■■■■■■■

■■■■

■■■■■■■■

■■■■

■■■■■■■■■■■■■

■■■■■■■■■■■

■■■■■■■■■■■■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

10

20

30

40

50 60

80

100

200

300

400

7-Day Lowflow■

66 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 16.1 50 years 20.2 20 years 28.2 10 years 37.4 5 years 51.7 2 years 91.5

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■

■■

■■■■■

■■■■■■■■■■■

■■■■■■

■■■■■■■■■■■■■■■■■■■■■■

■■■■■■

■■■■■■■■■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

10

20

30

40

50 60

80

100

200

300

400

30-Day Lowflow■

66 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 18.3 50 years 23.2 20 years 32.4 10 years 43.0 5 years 59.3 2 years 104

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 05132000 -- Big Fork River at Big Falls, MN

Period of record 1910 -- 2004

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

72 USGS OFR 2007-1033

Page 56: Station 04010500 -- Pigeon River at Middle Falls near Grand … · 2007. 2. 8. · Station 04010500 -- Pigeon River at Middle Falls near Grand Portage MN Period of record 1922 --

■■■■

■■■■■■■■■■■■■■■■■■■■■■■■

■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■

■■■■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

900

2000

3000

4000

5000

6000 7000

9000

20000

1-Day Lowflow■

73 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 1380 50 years 1650 20 years 2100 10 years 2560 5 years 3160 2 years 4430

RECURRENCE INTERVAL, IN YEARS

■■■■■

■■■■■■■

■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■

■■■■■■■■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

900

2000

3000

4000

5000

6000 7000

9000

20000

7-Day Lowflow■

73 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 1850 50 years 2150 20 years 2680 10 years 3200 5 years 3900 2 years 5390

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■■

■■■■■

■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■

■■■■■■■■■■■■■■■■■■■■■

■■■■■■■■■■

■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

900

2000

3000

4000

5000

6000 7000

9000

20000

30-Day Lowflow■

73 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 2470 50 years 2780 20 years 3290 10 years 3800 5 years 4500 2 years 6100

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 05133500 -- Rainy River at Manitou Rapids, MN

Period of record 1929 -- 2004

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

Appendix 1 73

Page 57: Station 04010500 -- Pigeon River at Middle Falls near Grand … · 2007. 2. 8. · Station 04010500 -- Pigeon River at Middle Falls near Grand Portage MN Period of record 1922 --

■■■■■

■■■■■■

■■■■■■

■■■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

0.1

0.2

0.4

0.6

1.0

2.0

4.0

6.0

10.0

20.0

40.0

60.0

1-Day Lowflow■

27 non-zero values1 zero valueEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.0 20 years 0.3 10 years 0.8 5 years 1.9 2 years 5.4

RECURRENCE INTERVAL, IN YEARS

■■■■

■■■■■■■

■■■■■

■■■■

■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

0.1

0.2

0.4

0.6

1.0

2.0

4.0

6.0

10.0

20.0

40.0

60.0

7-Day Lowflow■

27 non-zero values1 zero valueEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.0 20 years 0.3 10 years 0.9 5 years 2.0 2 years 5.9

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■

■■

■■■■■

■■■■

■■■

■■■■■■■

■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

0.1

0.2

0.4

0.6

1.0

2.0

4.0

6.0

10.0

20.0

40.0

60.0

30-Day Lowflow■

27 non-zero values1 zero valueEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.0 20 years 0.7 10 years 1.6 5 years 2.8 2 years 6.9

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 05134200 -- Rapid River near Baudette, MN

Period of record 1958 -- 1986

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

74 USGS OFR 2007-1033

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■■■■■

■■■■

■■■

■■■■■■■

■■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

0.01

0.02

0.04

0.06

0.10

0.20

0.40

0.60

1.00

2.00

4.00

6.00

1-Day Lowflow■

27 non-zero values7 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.0 20 years 0.0 10 years 0.0 5 years 0.0 2 years 0.3

RECURRENCE INTERVAL, IN YEARS

■■■

■■

■■

■■■■■■■■■

■■

■■■■

■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

0.006

0.010

0.020

0.040

0.060

0.100

0.200

0.400

0.600

1.000

2.000

4.000

6.000

7-Day Lowflow■

29 non-zero values5 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.0 20 years 0.0 10 years 0.0 5 years 0.06 2 years 0.5

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■■■

■■

■■■■■■■■■

■■■■

■■

■■■

■■

■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

0.07

0.10

0.20

0.30

0.50

0.70

1.00

2.00

3.00

5.00

7.00

30-Day Lowflow■

30 non-zero values4 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.0 20 years 0.0 10 years 0.0 5 years 0.3 2 years 0.9

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 05139500 -- Warroad River near Warroad, MN

Period of record 1947 -- 1980

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

Appendix 1 75

Page 59: Station 04010500 -- Pigeon River at Middle Falls near Grand … · 2007. 2. 8. · Station 04010500 -- Pigeon River at Middle Falls near Grand Portage MN Period of record 1922 --

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■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■

■■■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

10

20

30

40

60

80

200

300

400

600

800

2000

1-Day Lowflow■

60 non-zero values1 zero valueEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 13.7 20 years 49.7 10 years 83.1 5 years 137 2 years 280

RECURRENCE INTERVAL, IN YEARS

■■

■■■■■■■■■■■■■■■■

■■■■■■■■■■■■■

■■■■■■■■■■■■

■■■

■■■■■■■■■■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

20

30

40

60

80 100

200

300

400

600

8001000

2000

7-Day Lowflow■

61 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 29.4 50 years 43.1 20 years 73.0 10 years 111 5 years 176 2 years 363

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■■■■■■■■■■■■■

■■■■■■■■

■■■■

■■■■■■■■■■■

■■■■

■■■■■■■■■■■■

■■■

■■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

30

40

60

80

100

200

300

400

600

800

1000

2000

30-Day Lowflow■

61 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 54.4 50 years 76.0 20 years 122 10 years 178 5 years 273 2 years 545

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 05211000 -- Mississippi River at Grand Rapids, MN

Period of record 1944 -- 2004

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

76 USGS OFR 2007-1033

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■■■

■■

■■■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

7 8 9

20

30

40

50

60

70 80 90 1-Day Lowflow

18 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 5.2 50 years 7.3 20 years 11.6 10 years 16.6 5 years 24.2 2 years 42.5

RECURRENCE INTERVAL, IN YEARS

■■

■■■■

■■■

■■■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

7 8 9

20

30

40

50

60

70 80 90 7-Day Lowflow

18 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 6.9 50 years 9.3 20 years 13.9 10 years 19.1 5 years 26.8 2 years 44.6

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■

■■■

■■■■

■■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

7 8 9

20

30

40

50

60

70 80 90 30-Day Lowflow

18 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 8.6 50 years 11.6 20 years 17.5 10 years 24.0 5 years 33.5 2 years 54.2

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 05212700 -- Prairie River near Taconite, MN

Period of record 1968 -- 2004

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

Appendix 1 77

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■■

■■

■■■

■■■■

■■■■■■

■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

0.3

0.5

0.7

1.0

2.0

3.0

5.0

7.0

10.0

20.0

30.0

50.0

1-Day Lowflow■

25 non-zero values1 zero valueEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.0 20 years 0.5 10 years 1.6 5 years 3.5 2 years 9.6

RECURRENCE INTERVAL, IN YEARS

■■■

■■

■■

■■■■■■■■■■

■■

■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

0.3

0.5

0.7

1.0

2.0

3.0

5.0

7.0

10.0

20.0

30.0

50.0

7-Day Lowflow■

25 non-zero values1 zero valueEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.0 20 years 0.5 10 years 1.8 5 years 3.9 2 years 10.6

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■

■■

■■

■■

■■■■■■■■■■■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

0.3

0.5

0.7

1.0

2.0

3.0

5.0

7.0

10.0

20.0

30.0

50.0

30-Day Lowflow■

26 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.3 50 years 0.6 20 years 1.4 10 years 2.6 5 years 5.0 2 years 13.5

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 05216860 -- Swan River near Calumet, MN

Period of record 1965 -- 1991

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

78 USGS OFR 2007-1033

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■■■

■■■■

■■■■■■■■■

■■■■■■■■■■■■■■■■■■■

■■■■■■■

■■■■■■■■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

100

200

300

400

500

600 700

1000

2000

3000

1-Day Lowflow■

59 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 165 50 years 210 20 years 294 10 years 389 5 years 536 2 years 928

RECURRENCE INTERVAL, IN YEARS

■■

■■

■■■

■■■

■■■■■■■■■

■■■■■■■■■■■■■■■■■

■■■■■■■■

■■■■■■

■■■■■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

100

200

300

400

500

600 700

1000

2000

3000

7-Day Lowflow■

59 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 199 50 years 247 20 years 337 10 years 437 5 years 590 2 years 992

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■

■■

■■

■■■■■■■

■■■

■■■■■■■

■■■■■■■■■■■■■■■

■■■■■■■■■■■■■■■■■■

■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

100

200

300

400

500

600 700

1000

2000

3000

30-Day Lowflow■

59 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 230 50 years 290 20 years 404 10 years 532 5 years 723 2 years 1210

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 05227500 -- Mississippi River at Aitkin, MN

Period of record 1946 -- 2004

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

Appendix 1 79

Page 63: Station 04010500 -- Pigeon River at Middle Falls near Grand … · 2007. 2. 8. · Station 04010500 -- Pigeon River at Middle Falls near Grand Portage MN Period of record 1922 --

■■

■■

■■

■■■

■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

300

400

500

600

700

800 9001000

2000

3000

1-Day Lowflow■

16 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 224 50 years 270 20 years 355 10 years 449 5 years 589 2 years 955

RECURRENCE INTERVAL, IN YEARS

■■

■■

■■

■■

■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

300

400

500

600

700

800 9001000

2000

3000

7-Day Lowflow■

16 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 278 50 years 339 20 years 449 10 years 570 5 years 747 2 years 1190

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■■

■■

■■■

■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

300

400

500

600

700

800 9001000

2000

3000

30-Day Lowflow■

16 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 306 50 years 384 20 years 528 10 years 686 5 years 919 2 years 1500

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 05242300 -- Mississippi River at Brainerd, MN

Period of record 1988 -- 2004

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

80 USGS OFR 2007-1033

Page 64: Station 04010500 -- Pigeon River at Middle Falls near Grand … · 2007. 2. 8. · Station 04010500 -- Pigeon River at Middle Falls near Grand Portage MN Period of record 1922 --

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■■

■■

■■

■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

20

30

40

50

60

70

1-Day Lowflow■

15 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 23.8 50 years 26.0 20 years 29.5 10 years 32.7 5 years 36.9 2 years 45.3

RECURRENCE INTERVAL, IN YEARS

■■

■■

■■■

■■■

■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

20

30

40

50

60

70

7-Day Lowflow■

15 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 28.3 50 years 30.1 20 years 33.0 10 years 35.7 5 years 39.3 2 years 46.8

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■■

■■

■■■■

■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

20

30

40

50

60

70

30-Day Lowflow■

15 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 31.3 50 years 33.0 20 years 35.7 10 years 38.2 5 years 41.7 2 years 49.2

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 05243725 -- Straight River near Park Rapids, MN

Period of record 1988 -- 2004

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

Appendix 1 81

Page 65: Station 04010500 -- Pigeon River at Middle Falls near Grand … · 2007. 2. 8. · Station 04010500 -- Pigeon River at Middle Falls near Grand Portage MN Period of record 1922 --

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■■■■■■■■■

■■■■■■■■■■■■■■■■■■■■■■■■■

■■■■■■■■■

■■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

70

80

90

100

200

300

400

500

1-Day Lowflow■

54 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 85.3 50 years 99.8 20 years 124 10 years 147 5 years 177 2 years 236

RECURRENCE INTERVAL, IN YEARS

■■■

■■■■■■

■■

■■■■■■■■■■■■■■■■■■■

■■■■■■■■■■■■■■■■■

■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

70

80

90

100

200

300

400

500

7-Day Lowflow■

54 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 105 50 years 119 20 years 142 10 years 164 5 years 192 2 years 250

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■■

■■■■

■■■

■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■

■■■■■■■■

■■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

70

80

90

100

200

300

400

500

30-Day Lowflow■

54 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 117 50 years 132 20 years 156 10 years 179 5 years 209 2 years 271

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 05244000 -- Crow Wing River at Nimrod, MN

Period of record 1911 -- 2004

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

82 USGS OFR 2007-1033

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■■■

■■■■

■■■■■■■■■■■■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

0.6

1.0

2.0

4.0

6.0

10.0

20.0

40.0

60.0

100.0

200.0

400.0

1-Day Lowflow■

32 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.5 50 years 1.1 20 years 2.7 10 years 5.6 5 years 12.0 2 years 36.5

RECURRENCE INTERVAL, IN YEARS

■■■

■■■■■■■■■■■■

■■■■■■■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

0.6

1.0

2.0

4.0

6.0

10.0

20.0

40.0

60.0

100.0

200.0

400.0

7-Day Lowflow■

32 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.6 50 years 1.1 20 years 3.0 10 years 6.2 5 years 13.5 2 years 41.5

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■■

■■■■■■

■■■■■■■■■■■■■■

■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

0.6

1.0

2.0

4.0

6.0

10.0

20.0

40.0

60.0

100.0

200.0

400.0

30-Day Lowflow■

32 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.7 50 years 1.4 20 years 3.5 10 years 7.1 5 years 15.1 2 years 45.3

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 05245100 -- Long Prairie River at Long Prairie, MN

Period of record 1973 -- 2004

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

Appendix 1 83

Page 67: Station 04010500 -- Pigeon River at Middle Falls near Grand … · 2007. 2. 8. · Station 04010500 -- Pigeon River at Middle Falls near Grand Portage MN Period of record 1922 --

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■■■■■■■■

■■■

■■■■

■■■■■■■■■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

50 60

80

100

200

300

400

500 600

800

1000

2000

1-Day Lowflow■

34 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 38.2 50 years 53.5 20 years 85.5 10 years 125 5 years 188 2 years 358

RECURRENCE INTERVAL, IN YEARS

■■

■■

■■■■■■■■■■

■■■■■■■■■■■

■■■■

■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

50 60

80

100

200

300

400

500 600

800

1000

2000

7-Day Lowflow■

34 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 66.3 50 years 91.9 20 years 143 10 years 202 5 years 291 2 years 498

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■

■■■

■■■■■■■■■■■■

■■■■■■■■

■■■■

■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

50 60

80

100

200

300

400

500 600

800

1000

2000

30-Day Lowflow■

34 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 109 50 years 140 20 years 199 10 years 263 5 years 355 2 years 566

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 05247500 -- Crow Wing River near Pillager, MN

Period of record 1969 -- 2004

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

84 USGS OFR 2007-1033

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■■■■

■■■■■

■■■■■■■■■■■■

■■■■■■

■■■■■■■■■■

■■■■■■■■■■■■

■■■■■■■■■■■■■■

■■■■■■■■

■■■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

200

300

400

500

600 700 800

1000

2000

3000

4000

1-Day Lowflow■

80 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 230 50 years 293 20 years 413 10 years 551 5 years 764 2 years 1340

RECURRENCE INTERVAL, IN YEARS

■■

■■■■■

■■■■■

■■■■■■■■■■■■■■

■■■■■■■■■■■■■■■■■■■■■

■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

200

300

400

500

600 700 800

1000

2000

3000

4000

7-Day Lowflow■

80 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 324 50 years 409 20 years 568 10 years 745 5 years 1010 2 years 1670

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■

■■■■■■

■■■■■

■■■■■■■■■■

■■■■■

■■■■■■■■■■■■■■

■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■

■■■■■■■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

200

300

400

500

600 700 800

1000

2000

3000

4000

30-Day Lowflow■

80 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 389 50 years 487 20 years 669 10 years 870 5 years 1170 2 years 1920

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 05267000 -- Mississippi River near Royalton, MN

Period of record 1925 -- 2004

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

Appendix 1 85

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■■■■■■■

■■■■■■■■■■■■■■■■■■■■■■■■

■■■■■■■■■■■■■■■■■■■■■■

■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

1

2

4

6

10

20

40

60

100

200

400

1-Day Lowflow■

63 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 1.8 50 years 3.0 20 years 6.3 10 years 11.1 5 years 20.4 2 years 50.9

RECURRENCE INTERVAL, IN YEARS

■■

■■

■■

■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■

■■■■■

■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

1

2

4

6

10

20

40

60

100

200

400

7-Day Lowflow■

63 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 3.1 50 years 4.9 20 years 9.1 10 years 14.8 5 years 25.0 2 years 55.6

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■■

■■■■■

■■■

■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■

■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

1

2

4

6

10

20

40

60

100

200

400

30-Day Lowflow■

63 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 4.8 50 years 7.1 20 years 12.2 10 years 18.9 5 years 30.4 2 years 64.3

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 05270500 -- Sauk River near St. Cloud, MN

Period of record 1910 -- 2004

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

86 USGS OFR 2007-1033

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0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

1000

2000

3000

4000

5000

1-Day Lowflow■

15 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 790 50 years 893 20 years 1070 10 years 1260 5 years 1520 2 years 2180

RECURRENCE INTERVAL, IN YEARS

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■■■

■■

■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

1000

2000

3000

4000

5000

7-Day Lowflow■

15 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 1060 50 years 1180 20 years 1390 10 years 1590 5 years 1880 2 years 2550

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■

■■

■■

■■

■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

1000

2000

3000

4000

5000

30-Day Lowflow■

15 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 1210 50 years 1340 20 years 1560 10 years 1790 5 years 2100 2 years 2870

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 05270700 -- Mississippi River at St. Cloud, MN

Period of record 1989 -- 2004

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

Appendix 1 87

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■■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

3

4

6

8 10

20

30

40

60

80100

200

300

1-Day Lowflow■

71 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 8.7 50 years 12.5 20 years 20.5 10 years 30.1 5 years 44.5 2 years 77.6

RECURRENCE INTERVAL, IN YEARS

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■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■

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■■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

3

4

6

8 10

20

30

40

60

80100

200

300

7-Day Lowflow■

71 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 9.4 50 years 13.6 20 years 22.1 10 years 32.2 5 years 47.4 2 years 81.9

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■■

■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■

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0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

3

4

6

8 10

20

30

40

60

80100

200

300

30-Day Lowflow■

71 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 12.8 50 years 17.5 20 years 26.8 10 years 37.4 5 years 53.1 2 years 89.1

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 05275000 -- Elk River near Big Lake, MN

Period of record 1912 -- 2004

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

88 USGS OFR 2007-1033

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0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

0.05

0.10

0.20

0.50

1.00

2.00

5.00

10.00

20.00

50.00

100.00

200.00

500.00

1-Day Lowflow■

34 non-zero values4 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.0 20 years 0.0 10 years 0.0 5 years 0.4 2 years 3.1

RECURRENCE INTERVAL, IN YEARS

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■■■■■■

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0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

0.05

0.10

0.20

0.50

1.00

2.00

5.00

10.00

20.00

50.00

100.00

200.00

500.00

7-Day Lowflow■

34 non-zero values4 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.0 20 years 0.0 10 years 0.0 5 years 0.5 2 years 3.5

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■

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■■■■■■■■■

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■■■■

■■■■

■■

■■■■■■

■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

0.01

0.03

0.10

0.30

1.00

3.00

10.00

30.00

100.00

300.00

30-Day Lowflow■

37 non-zero values1 zero valueEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.0 20 years 0.07 10 years 0.2 5 years 0.7 2 years 4.8

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 05278000 -- Middle Fork Crow River near Spicer, MN

Period of record 1950 -- 1989

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

Appendix 1 89

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0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

0.2

0.4

0.6

1.0

2.0

4.0

6.0

10.0

20.0

40.0

60.0

100.0

200.0

1-Day Lowflow■

31 non-zero values14 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.0 20 years 0.0 10 years 0.0 5 years 0.0 2 years 1.6

RECURRENCE INTERVAL, IN YEARS

■■■■■■■■

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■■■

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■■■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

3e-003

1e-002

3e-002

1e-001

3e-001

1e+000

3e+000

1e+001

3e+001

1e+002

7-Day Lowflow■

34 non-zero values11 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.0 20 years 0.0 10 years 0.0 5 years 0.0 2 years 1.8

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■■

■■

■■

■■■■■■■

■■■■■■■■■■

■■■■■■■

■■■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

3e-003

1e-002

3e-002

1e-001

3e-001

1e+000

3e+000

1e+001

3e+001

1e+002

3e+002

30-Day Lowflow■

39 non-zero values6 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.0 20 years 0.0 10 years 0.0 5 years 0.1 2 years 2.6

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 05279000 -- South Fork Crow River near Mayer, MN

Period of record 1935 -- 1979

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

90 USGS OFR 2007-1033

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■■■■■■■■■■■■■■■■■■■■

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■■■■■■■■■■■

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0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

2

4

6

10

20

40

60

100

200

400

600

1000

1-Day Lowflow■

77 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 5.2 50 years 6.9 20 years 10.7 10 years 15.7 5 years 25.1 2 years 60.8

RECURRENCE INTERVAL, IN YEARS

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■■■■■■■■■■■■■■

■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■

■■■■■■■■■■■■

■■■■■

■■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

2

4

6

10

20

40

60

100

200

400

600

1000

7-Day Lowflow■

77 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 5.6 50 years 7.5 20 years 11.5 10 years 16.9 5 years 26.8 2 years 64.5

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■■■

■■■■

■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■

■■■

■■■■■■■■■■■■■■■■■

■■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

2

4

6

10

20

40

60

100

200

400

600

1000

30-Day Lowflow■

77 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 6.7 50 years 8.8 20 years 13.5 10 years 19.7 5 years 31.1 2 years 73.9

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 05280000 -- Crow River at Rockford, MN

Period of record 1907 -- 2004

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

Appendix 1 91

Page 75: Station 04010500 -- Pigeon River at Middle Falls near Grand … · 2007. 2. 8. · Station 04010500 -- Pigeon River at Middle Falls near Grand Portage MN Period of record 1922 --

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■■■■■■■■■■■■■■■■■■■■■■■

■■■■■■■■■■■■■■■■■

■■■■

■■■■■■■■■■■■

■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

20

30

40

50

60 70

100

200

300

400

500

600

1-Day Lowflow■

72 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 31.7 50 years 38.7 20 years 51.7 10 years 66.5 5 years 89.4 2 years 154

RECURRENCE INTERVAL, IN YEARS

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■■■■■■■■■■

■■■■■■■■■■■■■■■■■■■■■■■■

■■■■■■■■■■■

■■■■■■■■■■■■■■■

■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

20

30

40

50

60 70

100

200

300

400

500

600

7-Day Lowflow■

72 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 32.6 50 years 40.0 20 years 54.0 10 years 69.9 5 years 94.5 2 years 163

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■

■■■■■■■■

■■■■■■■■■■■■■■

■■■■■■■■■■■■■■■■

■■■■■■

■■■■■■■■■■■■■■■■■■■■■

■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

20

30

40

50

60 70

100

200

300

400

500

600

30-Day Lowflow■

72 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 34.4 50 years 42.4 20 years 57.5 10 years 74.7 5 years 101 2 years 176

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 05286000 -- Rum River near St. Francis, MN

Period of record 1930 -- 2004

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

92 USGS OFR 2007-1033

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■■

■■■

■■■■

■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

0.3

0.4

0.6

0.8

1.0

2.0

3.0

4.0

6.0

8.0

10.0

20.0

1-Day Lowflow■

25 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.2 50 years 0.3 20 years 0.4 10 years 0.5 5 years 0.8 2 years 1.7

RECURRENCE INTERVAL, IN YEARS

■■

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■■■

■■■■■

■■■

■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

0.3

0.4

0.6

0.8

1.0

2.0

3.0

4.0

6.0

8.0

10.0

20.0

7-Day Lowflow■

25 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.2 50 years 0.3 20 years 0.4 10 years 0.6 5 years 0.9 2 years 1.8

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■■

■■■■

■■

■■

■■■■

■■

■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

0.3

0.4

0.6

0.8

1.0

2.0

3.0

4.0

6.0

8.0

10.0

20.0

30-Day Lowflow■

25 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.4 50 years 0.5 20 years 0.6 10 years 0.8 5 years 1.1 2 years 2.2

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 05287890 -- Elm Creek near Champlin, MN

Period of record 1980 -- 2004

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

Appendix 1 93

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■■■■■■■■■■■■■■■■■■

■■■■■■■■■■■■■■■■■■

■■

■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

600

700

800 900

2000

3000

4000

5000

6000

7000

1-Day Lowflow■

72 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 533 50 years 648 20 years 857 10 years 1090 5 years 1420 2 years 2270

RECURRENCE INTERVAL, IN YEARS

■■■■

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■■■■■■■■■■■■■■■■

■■■■■■■■■■■■■■■

■■■■■■■■■■■■■■■

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0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

600

700

800 900

2000

3000

4000

5000

6000

7000

7-Day Lowflow■

72 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 593 50 years 739 20 years 1010 10 years 1300 5 years 1730 2 years 2800

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■■■■

■■■■■■

■■■

■■■■■■■■■■■■

■■■■■■■■■■■■■■■■

■■■■■■■■■■■■■■

■■■■■■■

■■■■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

600

700

800 900

2000

3000

4000

5000

6000

7000

30-Day Lowflow■

72 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 657 50 years 826 20 years 1140 10 years 1480 5 years 1990 2 years 3230

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 05288500 -- Mississippi River near Anoka, MN

Period of record 1932 -- 2004

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

94 USGS OFR 2007-1033

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■■■■■■■■■

■■■

■■■■■■

■■

■■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

0.01

0.02

0.05

0.10

0.20

0.50

1.00

2.00

5.00

10.00

20.00

1-Day Lowflow■

43 non-zero values10 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.0 20 years 0.0 10 years 0.0 5 years 0.02 2 years 0.3

RECURRENCE INTERVAL, IN YEARS

■■■■■

■■■

■■

■■■

■■■■■

■■■■■

■■■■■■■■■

■■■■■■■■

■■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

0.005

0.010

0.020

0.050

0.100

0.200

0.500

1.000

2.000

5.000

10.000

20.000

7-Day Lowflow■

48 non-zero values5 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.0 20 years 0.0 10 years 0.006 5 years 0.05 2 years 0.3

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■■

■■

■■■■■■■■■■

■■■■■■

■■■■■■

■■■■■■■■

■■■■■■■■■■

■■■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

0.005

0.010

0.020

0.050

0.100

0.200

0.500

1.000

2.000

5.000

10.000

30-Day Lowflow■

52 non-zero values1 zero valueEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.002 20 years 0.02 10 years 0.05 5 years 0.1 2 years 0.5

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 05290000 -- Little Minnesota River near Peever, SD

Period of record 1941 -- 2002

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

Appendix 1 95

Page 79: Station 04010500 -- Pigeon River at Middle Falls near Grand … · 2007. 2. 8. · Station 04010500 -- Pigeon River at Middle Falls near Grand Portage MN Period of record 1922 --

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■■■■■■■■■■■■■

■■■■■■■■■

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■■■■

■■■■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

0.06

0.10

0.20

0.40

0.60

1.00

2.00

4.00

6.00

10.00

20.00

40.00

1-Day Lowflow■

65 non-zero values8 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.0 20 years 0.0 10 years 0.0 5 years 0.3 2 years 1.5

RECURRENCE INTERVAL, IN YEARS

■■

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■■■■■

■■■■■■■■■■■■■■■■■■■

■■■■■■■■■■■■■■■■■■■■■■

■■■■■■

■■

■■■■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

0.06

0.10

0.20

0.40

0.60

1.00

2.00

4.00

6.00

10.00

20.00

40.00

7-Day Lowflow■

66 non-zero values7 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.0 20 years 0.0 10 years 0.04 5 years 0.4 2 years 1.8

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■■

■■

■■

■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■

■■■■■■■■■■■■■■■■■■

■■■■■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

0.01

0.02

0.05

0.10

0.20

0.50

1.00

2.00

5.00

10.00

20.00

50.00

30-Day Lowflow■

69 non-zero values4 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.0 20 years 0.0 10 years 0.2 5 years 0.6 2 years 2.6

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 05291000 -- Whetstone River near Big Stone City, SD

Period of record 1911 -- 2004

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

96 USGS OFR 2007-1033

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■■■■■■■■■■■■

■■■■■■■■■

■■■■■■■

■■■■■■■■■■

■■■■■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

0.02

0.05

0.10

0.20

0.50

1.00

2.00

5.00

10.00

20.00

50.00

1-Day Lowflow■

65 non-zero values1 zero valueEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.02 20 years 0.07 10 years 0.1 5 years 0.3 2 years 1.2

RECURRENCE INTERVAL, IN YEARS

■■

■■■■■■

■■■■■■■■■

■■■■■■■■■■■■■■■■■

■■■■■

■■■■■■■■

■■■■■■

■■■■■■

■■■■■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

0.02

0.05

0.10

0.20

0.50

1.00

2.00

5.00

10.00

20.00

50.00

100.00

7-Day Lowflow■

66 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.05 50 years 0.07 20 years 0.1 10 years 0.2 5 years 0.4 2 years 1.6

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■

■■■

■■■■■■■

■■■■■■■■■

■■■■■■■■■■■

■■■■■■■■

■■■■■■■■■■■

■■■■■■■

■■■■■■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

0.05

0.10

0.20

0.50

1.00

2.00

5.00

10.00

20.00

50.00

100.00

200.00

30-Day Lowflow■

66 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.07 50 years 0.1 20 years 0.2 10 years 0.4 5 years 0.7 2 years 2.7

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 05292000 -- Minnesota River at Ortonville, MN

Period of record 1939 -- 2004

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

Appendix 1 97

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■■■■■■■■■■■

■■■■■■

■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

0.02

0.05

0.10

0.20

0.50

1.00

2.00

5.00

10.00

20.00

50.00

100.00

1-Day Lowflow■

56 non-zero values5 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.0 20 years 0.0 10 years 0.05 5 years 0.2 2 years 1.1

RECURRENCE INTERVAL, IN YEARS

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■■■■■■■■■■■■■

■■■■■■■■■■■■

■■■

■■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

0.05

0.10

0.20

0.50

1.00

2.00

5.00

10.00

20.00

50.00

100.00

7-Day Lowflow■

57 non-zero values4 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.0 20 years 0.0 10 years 0.1 5 years 0.3 2 years 1.3

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■

■■■■■■■■■■

■■■■■■■■■■■■■■■■■■■■

■■■■■■■■■■■■■

■■■■■■■

■■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

3e-003

1e-002

3e-002

1e-001

3e-001

1e+000

3e+000

1e+001

3e+001

1e+002

30-Day Lowflow■

60 non-zero values1 zero valueEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.001 20 years 0.03 10 years 0.1 5 years 0.4 2 years 2.2

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 05293000 -- Yellow Bank River near Odessa, MN

Period of record 1941 -- 2004

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

98 USGS OFR 2007-1033

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■■■■■■■■■■

■■■

■■■■■■

■■■■■■■■■■■■■

■■■■■■

■■■■■■

■■■■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

0.2

0.4

0.6

1.0

2.0

4.0

6.0

10.0

20.0

40.0

60.0

100.0

200.0

1-Day Lowflow■

58 non-zero values6 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.0 20 years 0.0 10 years 0.2 5 years 1.8 2 years 8.0

RECURRENCE INTERVAL, IN YEARS

■■■■■

■■■■■■■■

■■■■

■■■■■■■

■■■■■■■■■■■■■■■■■

■■■

■■■■■■■■■

■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

0.4

0.6

1.0

2.0

4.0

6.0

10.0

20.0

40.0

60.0

100.0

200.0

7-Day Lowflow■

59 non-zero values5 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.0 20 years 0.0 10 years 0.7 5 years 2.3 2 years 9.3

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■■■

■■■■■■■■■

■■■■■■■

■■■■■

■■■■■■■■■■■■■■■■■■■■■

■■■■■■■■■■■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

0.05

0.10

0.20

0.50

1.00

2.00

5.00

10.00

20.00

50.00

100.00

200.00

30-Day Lowflow■

60 non-zero values4 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.0 20 years 0.0 10 years 0.8 5 years 2.9 2 years 13.0

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 05294000 -- Pomme De Terre River at Appleton, MN

Period of record 1932 -- 2004

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

Appendix 1 99

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■■

■■

■■■

■■■

■■■■■■■■■■■■■

■■■■■

■■■■■■■

■■■■■

■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

3e-003

1e-002

3e-002

1e-001

3e-001

1e+000

3e+000

1e+001

3e+001

1e+002

1-Day Lowflow■

47 non-zero values22 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.0 20 years 0.0 10 years 0.0 5 years 0.0 2 years 0.6

RECURRENCE INTERVAL, IN YEARS

■■■

■■

■■■

■■■■

■■■■■

■■■■■■■■■■■

■■■■■■■■■■■

■■■■■■

■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

3e-003

1e-002

3e-002

1e-001

3e-001

1e+000

3e+000

1e+001

3e+001

1e+002

7-Day Lowflow■

52 non-zero values17 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.0 20 years 0.0 10 years 0.0 5 years 0.0 2 years 0.9

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■■■

■■■■■■

■■■■■

■■■■■■■■■■■■

■■■■■■■■

■■■■■■■■■

■■■

■■■

■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

0.02

0.05

0.10

0.20

0.50

1.00

2.00

5.00

10.00

20.00

50.00

100.00

30-Day Lowflow■

56 non-zero values13 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.0 20 years 0.0 10 years 0.0 5 years 0.06 2 years 2.2

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 05300000 -- Lac Qui Parle River near Lac Qui Parle, MN

Period of record 1911 -- 2004

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

100 USGS OFR 2007-1033

Page 84: Station 04010500 -- Pigeon River at Middle Falls near Grand … · 2007. 2. 8. · Station 04010500 -- Pigeon River at Middle Falls near Grand Portage MN Period of record 1922 --

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■■■■■■■■■■■

■■■■■■■■■■■■■■■■■■■■■■■■■■■■

■■

■■

■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

1

2

4

6

10

20

40

60

100

200

400

600

1-Day Lowflow■ 53 non-zero values

3 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.0 20 years 0.0 10 years 4.2 5 years 8.1 2 years 23.6

RECURRENCE INTERVAL, IN YEARS

■■

■■■■■

■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■

■■■

■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

1e-003

3e-003

1e-002

3e-002

1e-001

3e-001

1e+000

3e+000

1e+001

3e+001

1e+002

3e+002

1e+003

7-Day Lowflow■ 55 non-zero values

1 zero valueEstimated streamflow

DN

OC

ES

RE

P T

EE

F CI

BU

C NI ,

WOL

FM

AE

RT

S

■■

■■

■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■

■■■■■

■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

3e-002

1e-001

3e-001

1e+000

3e+000

1e+001

3e+001

1e+002

3e+002

1e+003

30-Day Lowflow■ 55 non-zero values

1 zero valueEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.03 20 years 1.6 10 years 5.1 5 years 15.1 2 years 58.3

NON-EXCEEDANCE PROBABILITY(Cunnane plotting position)

Station 05301000 -- Minnesota River near Lac Qui Parle, MN

Period of record 1944 -- 2004

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

The 7-day lowflow statistics were notcalculated for this station because theabsolute value of the skew was greater than 3.3. The skew was -3.37.

Appendix 1 101

Page 85: Station 04010500 -- Pigeon River at Middle Falls near Grand … · 2007. 2. 8. · Station 04010500 -- Pigeon River at Middle Falls near Grand Portage MN Period of record 1922 --

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■■■■■■■■

■■■■

■■■■■■■

■■■■

■■■

■■■■■■■■■■■■■■■■

■■■

■■■■■■

■■■■■■■

■■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

1

2

4

6

10

20

40

60

100

200

400

1-Day Lowflow■

65 non-zero values1 zero valueEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.4 20 years 1.5 10 years 2.9 5 years 6.1 2 years 22.5

RECURRENCE INTERVAL, IN YEARS

■■■■■■■■■

■■■■

■■■■■■

■■■■■

■■■

■■■■■■

■■■■■■■■■■

■■■■■■

■■■■■

■■■■■■■

■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

1

2

4

6

10

20

40

60

100

200

400

7-Day Lowflow■

65 non-zero values1 zero valueEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.5 20 years 1.7 10 years 3.3 5 years 6.9 2 years 25.0

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■■■■■■■

■■■■■■■■■

■■■■■■■■■

■■■■■■■■■■■■■■■■

■■■■■

■■■■■■

■■■■■■■■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

1

2

4

6

10

20

40

60

100

200

400

30-Day Lowflow■

65 non-zero values1 zero valueEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.7 20 years 2.2 10 years 4.1 5 years 8.4 2 years 28.8

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 05304500 -- Chippewa River near Milan, MN

Period of record 1939 -- 2004

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

102 USGS OFR 2007-1033

Page 86: Station 04010500 -- Pigeon River at Middle Falls near Grand … · 2007. 2. 8. · Station 04010500 -- Pigeon River at Middle Falls near Grand Portage MN Period of record 1922 --

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■■■■■

■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■

■■■■■■■■■■■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

0.2

0.5

1.0

2.0

5.0

10.0

20.0

50.0

100.0

200.0

500.0

1000.0

1-Day Lowflow■

79 non-zero values3 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.0 20 years 1.3 10 years 5.8 5 years 16.0 2 years 61.6

RECURRENCE INTERVAL, IN YEARS

■■■

■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■

■■■■■■■■■■■■■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

1e-002

3e-002

1e-001

3e-001

1e+000

3e+000

1e+001

3e+001

1e+002

3e+002

1e+003

7-Day Lowflow■

80 non-zero values2 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.0 20 years 1.0 10 years 4.8 5 years 17.7 2 years 81.3

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■

■■

■■

■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■

■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

3e-002

1e-001

3e-001

1e+000

3e+000

1e+001

3e+001

1e+002

3e+002

1e+003

30-Day Lowflow■

82 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.1 50 years 0.4 20 years 1.9 10 years 5.9 5 years 18.8 2 years 89.3

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 05311000 -- Minnesota River at Montevideo, MN

Period of record 1910 -- 2004

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

Appendix 1 103

Page 87: Station 04010500 -- Pigeon River at Middle Falls near Grand … · 2007. 2. 8. · Station 04010500 -- Pigeon River at Middle Falls near Grand Portage MN Period of record 1922 --

■■

■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

3e-004

1e-003

3e-003

1e-002

3e-002

1e-001

3e-001

1e+000

3e+000

1e+001

3e+001

1e+002

1-Day Lowflow■

9 non-zero values16 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.0 20 years 0.0 10 years 0.0 5 years 0.0 2 years 0.0

RECURRENCE INTERVAL, IN YEARS

■■

■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

3e-004

1e-003

3e-003

1e-002

3e-002

1e-001

3e-001

1e+000

3e+000

1e+001

3e+001

1e+002

7-Day Lowflow■

12 non-zero values13 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.0 20 years 0.0 10 years 0.0 5 years 0.0 2 years 0.0

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■

■■

■■

■■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

3e-004

1e-003

3e-003

1e-002

3e-002

1e-001

3e-001

1e+000

3e+000

1e+001

3e+001

1e+002

30-Day Lowflow■

15 non-zero values10 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.0 20 years 0.0 10 years 0.0 5 years 0.0 2 years 0.05

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 05311400 -- South Branch Yellow Medicine River at Minneota, MN

Period of record 1961 -- 1987

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

104 USGS OFR 2007-1033

Page 88: Station 04010500 -- Pigeon River at Middle Falls near Grand … · 2007. 2. 8. · Station 04010500 -- Pigeon River at Middle Falls near Grand Portage MN Period of record 1922 --

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■■■

■■■

■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■

■■■■■■■■■■■■

■■■■■

■■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

0.02

0.05

0.10

0.20

0.50

1.00

2.00

5.00

10.00

20.00

50.00

1-Day Lowflow■

65 non-zero values2 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.0 20 years 0.1 10 years 0.4 5 years 1.0 2 years 3.8

RECURRENCE INTERVAL, IN YEARS

■■■

■■■■

■■■■■■■■■■■■■■■■■■■

■■■■■■■■■■■■■■■■■■■■■■■■■■■■

■■■■

■■

■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

0.06

0.10

0.20

0.40

0.60

1.00

2.00

4.00

6.00

10.00

20.00

40.00

60.00

7-Day Lowflow■

65 non-zero values2 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.0 20 years 0.3 10 years 0.6 5 years 1.2 2 years 3.8

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■

■■■

■■■■■■■■■■■■■■■■■■■■■■■■■■■

■■■■

■■■■■■■■■

■■■■■■■■■■

■■■

■■

■■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

0.1

0.2

0.4

0.6

1.0

2.0

4.0

6.0

10.0

20.0

40.0

60.0

30-Day Lowflow■

67 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.2 50 years 0.3 20 years 0.5 10 years 0.8 5 years 1.5 2 years 4.5

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 05313500 -- Yellow Medicine River near Granite Falls, MN

Period of record 1932 -- 2004

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

Appendix 1 105

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■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

0.02

0.05

0.10

0.20

0.50

1.00

2.00

5.00

10.00

20.00

50.00

1-Day Lowflow■

53 non-zero values11 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.0 20 years 0.0 10 years 0.0 5 years 0.1 2 years 1.6

RECURRENCE INTERVAL, IN YEARS

■■

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■■■■■■■■■

■■■■■■■■■■■

■■■■■■■■■■■■

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0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

0.02

0.05

0.10

0.20

0.50

1.00

2.00

5.00

10.00

20.00

50.00

7-Day Lowflow■

55 non-zero values9 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.0 20 years 0.0 10 years 0.0 5 years 0.2 2 years 2.0

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■

■■■■

■■■■■■■

■■■■■■

■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■

■■

■■■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

0.01

0.02

0.05

0.10

0.20

0.50

1.00

2.00

5.00

10.00

20.00

50.00

100.00

30-Day Lowflow■

62 non-zero values2 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.0 20 years 0.04 10 years 0.2 5 years 0.7 2 years 3.5

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 05315000 -- Redwood River near Marshall, MN

Period of record 1941 -- 2004

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

106 USGS OFR 2007-1033

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■■■■■■■■■■■■

■■■■■■■■■■■■■■■■■■■■■■

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■■■■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

0.02

0.05

0.10

0.20

0.50

1.00

2.00

5.00

10.00

20.00

50.00

100.00

1-Day Lowflow■

69 non-zero values1 zero valueEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.05 20 years 0.2 10 years 0.4 5 years 0.8 2 years 3.4

RECURRENCE INTERVAL, IN YEARS

■■■■

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■■■■■■■■■■■■■■■

■■■■■■■■■■■■■■■■■■■■■■■

■■■■■■■■■■

■■■■■■■■■■

■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

3e-003

1e-002

3e-002

1e-001

3e-001

1e+000

3e+000

1e+001

3e+001

1e+002

7-Day Lowflow■

70 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.04 50 years 0.08 20 years 0.2 10 years 0.4 5 years 1.0 2 years 4.1

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■■

■■

■■■■■■■■

■■■■■■

■■■■■■■■■■■■■■■■■■■■■■■■■■■

■■■■■■■■■

■■■■■

■■■■

■■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

0.1

0.2

0.5

1.0

2.0

5.0

10.0

20.0

50.0

100.0

200.0

30-Day Lowflow■

70 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.1 50 years 0.2 20 years 0.4 10 years 0.7 5 years 1.4 2 years 4.9

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 05316500 -- Redwood River near Redwood Falls, MN

Period of record 1910 -- 2004

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

Appendix 1 107

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■■■■■■■■

■■■■■■■■■■■■■■■

■■■

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■■■■■■■■

■■■■

■■■

■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

0.4

0.6

1.0

2.0

4.0

6.0

10.0

20.0

40.0

60.0

100.0

200.0

1-Day Lowflow■

70 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.6 50 years 0.9 20 years 1.6 10 years 2.6 5 years 4.7 2 years 13.8

RECURRENCE INTERVAL, IN YEARS

■■■■■■■■■

■■■■■■■■

■■■■■■■■■■■■■

■■■■■■■■■■■■■■

■■■■■■■■■■■■■■

■■■■■■■■

■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

0.4

0.6

1.0

2.0

4.0

6.0

10.0

20.0

40.0

60.0

100.0

200.0

7-Day Lowflow■

70 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.9 50 years 1.2 20 years 2.1 10 years 3.4 5 years 6.0 2 years 16.8

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■■■■■

■■■■■■

■■■

■■■■■■■■■■■■■■■■■■■■■■■■■

■■■■■■■

■■■

■■■■■■■■■■■■■■■

■■■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

0.4

0.6

1.0

2.0

4.0

6.0

10.0

20.0

40.0

60.0

100.0

200.0

30-Day Lowflow■

70 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 1.4 50 years 1.9 20 years 3.2 10 years 4.9 5 years 8.1 2 years 21.2

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 05317000 -- Cottonwood River near New Ulm, MN

Period of record 1910 -- 2004

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

108 USGS OFR 2007-1033

Page 92: Station 04010500 -- Pigeon River at Middle Falls near Grand … · 2007. 2. 8. · Station 04010500 -- Pigeon River at Middle Falls near Grand Portage MN Period of record 1922 --

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■■■■■■

■■■

■■■■■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

0.06

0.10

0.20

0.40

0.60

1.00

2.00

4.00

6.00

10.00

20.00

40.00

1-Day Lowflow■

28 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.06 50 years 0.1 20 years 0.2 10 years 0.4 5 years 0.7 2 years 2.6

RECURRENCE INTERVAL, IN YEARS

■■

■■■

■■

■■■■

■■■■■■

■■■

■■■■■

■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

0.06

0.10

0.20

0.40

0.60

1.00

2.00

4.00

6.00

10.00

20.00

40.00

7-Day Lowflow■

28 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.07 50 years 0.1 20 years 0.2 10 years 0.4 5 years 0.8 2 years 2.9

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■■

■■

■■■■■

■■■■■

■■

■■■■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

0.06

0.10

0.20

0.40

0.60

1.00

2.00

4.00

6.00

10.00

20.00

40.00

30-Day Lowflow■

28 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.1 50 years 0.2 20 years 0.4 10 years 0.6 5 years 1.2 2 years 3.9

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 05317200 -- Little Cottonwood River near Courtland, MN

Period of record 1975 -- 2004

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

Appendix 1 109

Page 93: Station 04010500 -- Pigeon River at Middle Falls near Grand … · 2007. 2. 8. · Station 04010500 -- Pigeon River at Middle Falls near Grand Portage MN Period of record 1922 --

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■■■■■■

■■■■■■■

■■■

■■■■■

■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

1

2

3

5

7

10

20

30

50

70

100

200

1-Day Lowflow■

32 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 1.0 50 years 1.5 20 years 2.7 10 years 4.4 5 years 7.7 2 years 19.8

RECURRENCE INTERVAL, IN YEARS

■■

■■

■■■■

■■■■

■■■

■■■

■■■■

■■■■

■■■

■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

1

2

3

5

7

10

20

30

50

70

100

200

7-Day Lowflow■

32 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 1.2 50 years 1.7 20 years 3.0 10 years 4.9 5 years 8.3 2 years 21.2

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■■

■■

■■■■■

■■

■■

■■■■■

■■

■■■■

■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

1

2

3

5

7

10

20

30

50

70

100

200

30-Day Lowflow■

32 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 1.8 50 years 2.5 20 years 4.1 10 years 6.3 5 years 10.4 2 years 25.6

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 05319500 -- Watonwan River near Garden City, MN

Period of record 1941 -- 2004

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

110 USGS OFR 2007-1033

Page 94: Station 04010500 -- Pigeon River at Middle Falls near Grand … · 2007. 2. 8. · Station 04010500 -- Pigeon River at Middle Falls near Grand Portage MN Period of record 1922 --

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■■■■■■■■■■■■■■■

■■■■

■■■■■■

■■■■■■■■

■■■■■■■

■■■■■

■■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

6

8 10

20

30

40

60

80100

200

300

400

600

1-Day Lowflow■

59 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 4.8 50 years 6.0 20 years 8.5 10 years 11.6 5 years 17.3 2 years 38.8

RECURRENCE INTERVAL, IN YEARS

■■■■■■

■■■■

■■■■■■■

■■■■■■■■■■

■■■■■■■■■■■■■■

■■

■■■■■■■

■■

■■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

6

8 10

20

30

40

60

80100

200

300

400

600

7-Day Lowflow■

59 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 6.1 50 years 8.0 20 years 12.0 10 years 17.0 5 years 25.9 2 years 56.6

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■■■

■■■

■■■■■

■■■■■■■■■■■■■■■■

■■■■■■■■■■■■■

■■■■

■■■■■■■

■■■■

■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

6

8 10

20

30

40

60

80100

200

300

400

600

30-Day Lowflow■

59 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 9.5 50 years 12.0 20 years 17.0 10 years 23.2 5 years 34.0 2 years 70.6

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 05320000 -- Blue Earth River near Rapidan, MN

Period of record 1910 -- 2004

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

Appendix 1 111

Page 95: Station 04010500 -- Pigeon River at Middle Falls near Grand … · 2007. 2. 8. · Station 04010500 -- Pigeon River at Middle Falls near Grand Portage MN Period of record 1922 --

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■■■■■■■■■■

■■■■■■■

■■■■■■■■■■■■■■■■■■■

■■

■■■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

1

2

3

5

7

10

20

30

50

70

100

200

1-Day Lowflow■

59 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 1.9 50 years 2.6 20 years 4.1 10 years 6.1 5 years 9.6 2 years 21.6

RECURRENCE INTERVAL, IN YEARS

■■

■■■■

■■■■■■

■■■■■■

■■■■■

■■■■■■■■■■■

■■■■■■■■■■■■■

■■■■

■■

■■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

1

2

3

5

7

10

20

30

50

70

100

200

7-Day Lowflow■

59 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 2.0 50 years 2.7 20 years 4.3 10 years 6.4 5 years 10.2 2 years 23.0

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■

■■■

■■■

■■■■■■■■■■■■■■■■■■

■■■■■■■■

■■■■■■■■■■

■■■

■■■■■

■■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

1

2

3

5

7

10

20

30

50

70

100

200

30-Day Lowflow■

59 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 2.2 50 years 3.1 20 years 5.1 10 years 7.7 5 years 12.5 2 years 29.4

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 05320500 -- Le Sueur River near Rapidan, MN

Period of record 1941 -- 2004

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

112 USGS OFR 2007-1033

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■■■■■■■■■■■■■■■■

■■■■■■■■■■

■■■■■■■■■■■■■■■■■■■■■■■■■

■■■■■■■■■■

■■■■■■

■■■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

30

40

60

80

100

200

300

400

600

800

1000

2000

1-Day Lowflow■

83 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 29.8 50 years 38.1 20 years 54.9 10 years 76.2 5 years 113 2 years 243

RECURRENCE INTERVAL, IN YEARS

■■

■■■■

■■■

■■

■■■■■■■■■■■■■■■

■■■■■■■■■■

■■■■■■■■■■■■■■■■■■■■■■■■

■■■■■■

■■■■■■■■■■■■

■■■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

30

40

60

80

100

200

300

400

600

800

1000

2000

7-Day Lowflow■

83 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 32.6 50 years 41.6 20 years 60.1 10 years 83.2 5 years 123 2 years 262

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■

■■■■

■■

■■■■■■■■■

■■■■■■■■■■■■■■■■■

■■■■■■■■■■■■■■■■■■■■

■■■■

■■■■■

■■■■■■

■■■■■■■

■■

■■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

30

40

60

80

100

200

300

400

600

800

1000

2000

30-Day Lowflow■

83 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 36.9 50 years 47.1 20 years 67.9 10 years 94.0 5 years 139 2 years 297

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 05325000 -- Minnesota River at Mankato, MN

Period of record 1904 -- 2004

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

Appendix 1 113

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■■

■■■

■■■

■■

■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

0.3

0.5

0.7

1.0

2.0

3.0

5.0

7.0

10.0

20.0

30.0

50.0

70.0

1-Day Lowflow■

30 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.3 50 years 0.4 20 years 0.6 10 years 0.8 5 years 1.2 2 years 2.7

RECURRENCE INTERVAL, IN YEARS

■■■■

■■■■■■■■■■

■■

■■

■■■

■■■

■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

0.3

0.5

0.7

1.0

2.0

3.0

5.0

7.0

10.0

20.0

30.0

50.0

70.0

7-Day Lowflow■

30 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.4 50 years 0.5 20 years 0.7 10 years 0.9 5 years 1.4 2 years 3.2

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■■■■■

■■■■■■

■■

■■

■■■

■■■■

■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

0.3

0.5

0.7

1.0

2.0

3.0

5.0

7.0

10.0

20.0

30.0

50.0

70.0

30-Day Lowflow■

30 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.5 50 years 0.6 20 years 0.8 10 years 1.1 5 years 1.6 2 years 3.9

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 05327000 -- High Island Creek near Henderson, MN

Period of record 1975 -- 2004

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

114 USGS OFR 2007-1033

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■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

80

100

200

300

400

500 600

800

1000

2000

3000

1-Day Lowflow■

69 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 81.9 50 years 98.5 20 years 130 10 years 168 5 years 230 2 years 427

RECURRENCE INTERVAL, IN YEARS

■■■

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■■■■■■■■■■■■■■■■■■■

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■■■■■■■

■■■■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

80

100

200

300

400

500 600

800

1000

2000

3000

7-Day Lowflow■

69 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 91.7 50 years 110 20 years 144 10 years 183 5 years 248 2 years 452

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■■■

■■■■■■■■

■■■■■■■■■■■■■■■■■■■■■■■

■■■■■■■■

■■■■■■

■■■

■■■■■■■■■

■■■■

■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

80

100

200

300

400

500 600

800

1000

2000

3000

30-Day Lowflow■

69 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 98.3 50 years 118 20 years 155 10 years 199 5 years 271 2 years 497

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 05330000 -- Minnesota River near Jordan, MN

Period of record 1936 -- 2004

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

Appendix 1 115

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■■■■■■■■■■■■■■■■■■

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■■■■■■■■■■

■■■■

■■■■■■■■■

■■■■■■■■■■■■■■■■■■■■

■■■■■■■■■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

600

700 800

1000

2000

3000

4000

5000

6000

70008000 1-Day Lowflow

105 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 653 50 years 782 20 years 1020 10 years 1280 5 years 1670 2 years 2710

RECURRENCE INTERVAL, IN YEARS

■■

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■■■■■■■■■■■■■■■

■■■■■

■■

■■■■■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

600

700 800

1000

2000

3000

4000

5000

6000

70008000 7-Day Lowflow

105 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 782 50 years 931 20 years 1200 10 years 1500 5 years 1940 2 years 3090

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■■■■■

■■■■■■■

■■■■■■■■■■■■■■■

■■■

■■■■■■

■■■■■■■■■

■■■■■■■■■■■

■■■■■■■■

■■■■■■

■■■■■■■■■■■■■■■

■■■■■■■■

■■■■■■■■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

600

700 800

1000

2000

3000

4000

5000

6000

70008000 30-Day Lowflow

105 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 900 50 years 1070 20 years 1370 10 years 1690 5 years 2180 2 years 3420

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 05331000 -- Mississippi River at St. Paul, MN

Period of record 1893 -- 2004

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

116 USGS OFR 2007-1033

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■■■■■■■■■■■■■■

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■■■■■■■■

■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

40

50

60

70

80 90100

200

300

400

1-Day Lowflow■

36 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 45.2 50 years 52.7 20 years 65.4 10 years 77.8 5 years 94.1 2 years 128

RECURRENCE INTERVAL, IN YEARS

■■

■■■

■■

■■■■■■■■■

■■■■■■■■■

■■■■■■■■

■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

40

50

60

70

80 90100

200

300

400

7-Day Lowflow■

36 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 56.9 50 years 63.4 20 years 74.0 10 years 84.4 5 years 98.4 2 years 129

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■

■■

■■

■■■■■■

■■■■■■■■■

■■■■■

■■■■■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

40

50

60

70

80 90100

200

300

400

30-Day Lowflow■

36 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 64.9 50 years 71.1 20 years 81.4 10 years 91.9 5 years 106 2 years 141

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 05336700 -- Kettle River below Sandstone, MN

Period of record 1969 -- 2004

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

Appendix 1 117

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■■■

■■■

■■

■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

0.7

1.0

2.0

3.0

4.0

5.0

6.0 7.0

10.0

20.0

1-Day Lowflow■

26 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.5 50 years 0.6 20 years 0.9 10 years 1.2 5 years 1.8 2 years 3.4

RECURRENCE INTERVAL, IN YEARS

■■

■■■

■■

■■

■■■

■■■■■■

■■

■■

■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

0.7

1.0

2.0

3.0

4.0

5.0

6.0 7.0

10.0

20.0

7-Day Lowflow■

26 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.5 50 years 0.6 20 years 1.0 10 years 1.4 5 years 2.1 2 years 4.2

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■

■■■■

■■■■

■■

■■■■

■■

■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

0.7

1.0

2.0

3.0

4.0

5.0

6.0 7.0

10.0

20.0

30-Day Lowflow■

26 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.5 50 years 0.7 20 years 1.1 10 years 1.7 5 years 2.7 2 years 5.9

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 05337400 -- Knife River near Mora, MN

Period of record 1975 -- 2002

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

118 USGS OFR 2007-1033

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■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

30

40

50

60

70

80

90

100

200

1-Day Lowflow■

13 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 26.2 50 years 30.4 20 years 37.6 10 years 44.9 5 years 54.9 2 years 78.0

RECURRENCE INTERVAL, IN YEARS

■■

■■

■■

■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

30

40

50

60

70

80

90

100

200

7-Day Lowflow■

13 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 30.9 50 years 35.0 20 years 42.1 10 years 49.3 5 years 59.3 2 years 82.8

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■■

■■■

■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

30

40

50

60

70

80

90

100

200

30-Day Lowflow■

13 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 39.6 50 years 43.9 20 years 51.2 10 years 58.6 5 years 69.0 2 years 93.6

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 05338500 -- Snake River near Pine City, MN

Period of record 1981 -- 2004

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

Appendix 1 119

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■■■

■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

2

3

4

5

6

8

10

20

30

40

50

60

1-Day Lowflow■

19 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 1.8 50 years 2.4 20 years 3.5 10 years 4.9 5 years 7.0 2 years 13.1

RECURRENCE INTERVAL, IN YEARS

■■■■■

■■

■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

2

3

4

5

6

8

10

20

30

40

50

60

7-Day Lowflow■

19 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 1.9 50 years 2.5 20 years 3.8 10 years 5.3 5 years 7.8 2 years 14.7

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■

■■■■

■■

■■

■■

■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

2

3

4

5

6

8

10

20

30

40

50

60

30-Day Lowflow■

19 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 1.9 50 years 2.8 20 years 4.6 10 years 7.0 5 years 11.0 2 years 22.3

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 05340050 -- Sunrise River near Lindstrom, MN

Period of record 1966 -- 1985

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

120 USGS OFR 2007-1033

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■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■

■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■

■■■■■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

1000

2000

3000

4000

5000

6000 7000 8000

10000

20000

1-Day Lowflow■

75 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 1570 50 years 1840 20 years 2300 10 years 2790 5 years 3490 2 years 5200

RECURRENCE INTERVAL, IN YEARS

■■

■■■■

■■■■■■■

■■■■■■■■■■■■■■■■■■

■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■

■■■■■■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

1000

2000

3000

4000

5000

6000 7000 8000

10000

20000

7-Day Lowflow■

75 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 2030 50 years 2330 20 years 2860 10 years 3410 5 years 4180 2 years 6010

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■■

■■■■■■■

■■■■■■■■

■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■

■■■■■

■■■■■■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

1000

2000

3000

4000

5000

6000 7000 8000

10000

20000

30-Day Lowflow■

75 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 2210 50 years 2560 20 years 3160 10 years 3780 5 years 4630 2 years 6650

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 05344500 -- Mississippi River at Prescott, WI

Period of record 1929 -- 2004

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

Appendix 1 121

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■■

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■■■■

■■■■

■■■

■■■■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

8

910

20

30

40

50

60

1-Day Lowflow■

31 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 7.3 50 years 8.7 20 years 11.0 10 years 13.4 5 years 16.9 2 years 25.0

RECURRENCE INTERVAL, IN YEARS

■■

■■■■■

■■■

■■

■■■■

■■■■■

■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

8

910

20

30

40

50

60

7-Day Lowflow■

31 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 7.8 50 years 9.3 20 years 11.7 10 years 14.2 5 years 17.8 2 years 26.0

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■

■■■

■■■

■■■■

■■■■

■■■■■■■

■■■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

8

910

20

30

40

50

60

30-Day Lowflow■

31 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 8.8 50 years 10.3 20 years 12.9 10 years 15.7 5 years 19.5 2 years 28.2

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 05345000 -- Vermillion River near Empire, MN

Period of record 1943 -- 2004

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

122 USGS OFR 2007-1033

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■■■■■

■■

■■■■

■■■■■■■■■■■

■■■■■■■

■■■

■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

10

20

30

40

50

60 70 80

100

200

1-Day Lowflow■

38 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 7.9 50 years 9.6 20 years 12.8 10 years 16.3 5 years 21.4 2 years 34.2

RECURRENCE INTERVAL, IN YEARS

■■

■■■■■

■■

■■■■

■■■■■■■■■■■■

■■■■■■

■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

10

20

30

40

50

60 70 80

100

200

7-Day Lowflow■

38 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 8.1 50 years 9.9 20 years 13.2 10 years 16.8 5 years 22.2 2 years 35.8

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■

■■■

■■

■■

■■■■

■■■■

■■■■■■

■■■■■■

■■■

■■

■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

10

20

30

40

50

60 70 80

100

200

30-Day Lowflow■

38 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 8.3 50 years 10.2 20 years 14.0 10 years 18.1 5 years 24.5 2 years 41.5

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 05353800 -- Straight River near Faribault, MN

Period of record 1967 -- 2004

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

Appendix 1 123

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■■■

■■■■■■■■■■■■■■■■■■■■■■■■■

■■■

■■■■■■

■■■

■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

10

20

30

40

50 60

80

100

200

300

400

500

1-Day Lowflow■

54 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 23.1 50 years 26.7 20 years 33.4 10 years 41.0 5 years 53.0 2 years 88.8

RECURRENCE INTERVAL, IN YEARS

■■

■■■■■■

■■■■■■■■■■■■■■■■■■■■■■

■■■■■■■■■■■

■■■■

■■

■■■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

10

20

30

40

50 60

80

100

200

300

400

500

7-Day Lowflow■

54 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 40.3 50 years 45.2 20 years 54.2 10 years 64.1 5 years 79.3 2 years 123

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■■

■■■■■■■■

■■■■■■■■■■■■■■■■■■■■■■■■

■■■■■■■■■■

■■■■■■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

10

20

30

40

50 60

80

100

200

300

400

500

30-Day Lowflow■

54 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 50.5 50 years 56.1 20 years 66.3 10 years 77.5 5 years 94.6 2 years 143

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 05355200 -- Cannon River at Welch, MN

Period of record 1910 -- 2004

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

124 USGS OFR 2007-1033

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■■■■■■■■

■■■

■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

10

20

30

40

50

60

70

80 90100

1-Day Lowflow■

23 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 8.8 50 years 11.0 20 years 14.9 10 years 19.2 5 years 25.5 2 years 40.7

RECURRENCE INTERVAL, IN YEARS

■■

■■■■

■■■■■■■■

■■■

■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

10

20

30

40

50

60

70

80 90100

7-Day Lowflow■

23 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 10.6 50 years 13.0 20 years 17.2 10 years 21.8 5 years 28.4 2 years 43.9

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■

■■

■■■■■■

■■

■■■■■

■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

10

20

30

40

50

60

70

80 90100

30-Day Lowflow■

23 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 13.5 50 years 16.4 20 years 21.5 10 years 27.0 5 years 34.8 2 years 52.7

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 05372995 -- South Fork Zumbro River at Rochester, MN

Period of record 1982 -- 2004

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

Appendix 1 125

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■■■■■

■■■■■■■

■■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

10

20

30

40

50

60 70 80

100

200

1-Day Lowflow■

29 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 14.4 50 years 15.5 20 years 17.5 10 years 19.6 5 years 22.7 2 years 30.9

RECURRENCE INTERVAL, IN YEARS

■■■■■■■

■■■■■■

■■■■■

■■

■■■■

■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

10

20

30

40

50

60 70 80

100

200

7-Day Lowflow■

29 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 16.4 50 years 17.7 20 years 19.9 10 years 22.2 5 years 25.7 2 years 34.7

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■■■■■

■■■■

■■■■■■■

■■■■■

■■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

10

20

30

40

50

60 70 80

100

200

30-Day Lowflow■

29 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 17.5 50 years 18.8 20 years 21.2 10 years 23.8 5 years 27.7 2 years 38.3

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 05373000 -- South Fork Zumbro River near Rochester, MN

Period of record 1953 -- 1982

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

126 USGS OFR 2007-1033

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■■■■■■■■■■■■■■■■■■■■■■■■■■

■■■■■■■

■■■■■■■■■■■■■■■

■■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

40

50

60

70

80 90

200

300

400

500

1-Day Lowflow■

57 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 39.9 50 years 43.5 20 years 49.7 10 years 56.1 5 years 65.2 2 years 87.9

RECURRENCE INTERVAL, IN YEARS

■■■

■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■

■■■■■■■■

■■■■■

■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

40

50

60

70

80 90

200

300

400

500

7-Day Lowflow■

57 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 62.5 50 years 65.7 20 years 71.5 10 years 77.9 5 years 87.7 2 years 115

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■■■■

■■■■■■■■■■■■■■■■■■■

■■■■■■■■■■■■■

■■■■■■■■■

■■■■

■■■

■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

40

50

60

70

80 90

200

300

400

500

30-Day Lowflow■

57 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 69.1 50 years 73.6 20 years 81.7 10 years 90.4 5 years 103 2 years 137

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 05374000 -- Zumbro River at Zumbro Falls, MN

Period of record 1910 -- 1980

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

Appendix 1 127

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■■■■

■■■■

■■■

■■

■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

9

10

20

30

40

50

1-Day Lowflow■

26 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 9.0 50 years 10.1 20 years 11.9 10 years 13.7 5 years 16.2 2 years 21.8

RECURRENCE INTERVAL, IN YEARS

■■

■■■■■

■■

■■■

■■■■

■■■■

■■

■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

9

10

20

30

40

50

7-Day Lowflow■

26 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 11.7 50 years 12.6 20 years 14.2 10 years 15.7 5 years 17.9 2 years 22.8

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■■■■■■

■■■■■

■■■■■

■■

■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

9

10

20

30

40

50

30-Day Lowflow■

26 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 12.6 50 years 13.6 20 years 15.2 10 years 16.8 5 years 19.1 2 years 24.3

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 05376000 -- North Fork Whitewater River near Elba, MN

Period of record 1940 -- 1994

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

128 USGS OFR 2007-1033

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■■■■■■■

■■■■■■

■■■■■■■

■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

6

7

8

9

10

20

1-Day Lowflow■

31 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 7.1 50 years 7.5 20 years 8.1 10 years 8.6 5 years 9.2 2 years 10.6

RECURRENCE INTERVAL, IN YEARS

■■

■■■■■■■■■■

■■■■■

■■■■■■■

■■

■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

6

7

8

9

10

20

7-Day Lowflow■

31 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 7.4 50 years 7.7 20 years 8.3 10 years 8.8 5 years 9.5 2 years 10.9

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■■

■■■■■■■

■■■■■■

■■■■■■■■■■

■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

6

7

8

9

10

20

30-Day Lowflow■

31 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 8.4 50 years 8.6 20 years 9.1 10 years 9.5 5 years 10.1 2 years 11.4

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 05376500 -- South Fork Whitewater River near Altura, MN

Period of record 1941 -- 1971

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

Appendix 1 129

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■■■

■■■■■■■■■

■■■■■■■■■■■■■■■■■■

■■■■■■■■■■

■■■■■■■■■■■■■■■■■■■■■■■■

■■■■■

■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

2000

3000

4000

5000

6000

7000 8000

10000

20000

30000

1-Day Lowflow■

75 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 2560 50 years 3100 20 years 4040 10 years 5020 5 years 6360 2 years 9310

RECURRENCE INTERVAL, IN YEARS

■■■

■■■■■■■■■■■■■■

■■■■■■■■■■■■■■■■■■■■■

■■■■■■■■■■■■■■■■■■■■■■■■■■■■■

■■■■■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

2000

3000

4000

5000

6000

7000 8000

10000

20000

30000

7-Day Lowflow■

75 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 3970 50 years 4530 20 years 5470 10 years 6410 5 years 7690 2 years 10600

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■■

■■■■

■■■■■■■■■■■■■■■■■■■■■■■■■■■■

■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■

■■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

2000

3000

4000

5000

6000

7000 8000

10000

20000

30000

30-Day Lowflow■

75 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 5050 50 years 5620 20 years 6600 10 years 7580 5 years 8940 2 years 12100

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 05378500 -- Mississippi River at Winona, MN

Period of record 1929 -- 2004

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

130 USGS OFR 2007-1033

Page 114: Station 04010500 -- Pigeon River at Middle Falls near Grand … · 2007. 2. 8. · Station 04010500 -- Pigeon River at Middle Falls near Grand Portage MN Period of record 1922 --

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■■■

■■■■■

■■■

■■■■

■■

■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

0.7

0.8

0.9

1.0

2.0

3.0

4.0

1-Day Lowflow■

23 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.7 50 years 0.9 20 years 1.1 10 years 1.3 5 years 1.6 2 years 2.2

RECURRENCE INTERVAL, IN YEARS

■■

■■■

■■■■■

■■■■■■■

■■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

0.7

0.8

0.9

1.0

2.0

3.0

4.0

7-Day Lowflow■

23 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.8 50 years 0.9 20 years 1.2 10 years 1.5 5 years 1.8 2 years 2.4

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■■■

■■■■

■■■■■■

■■■■

■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

0.7

0.8

0.9

1.0

2.0

3.0

4.0

30-Day Lowflow■

23 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 1.4 50 years 1.5 20 years 1.7 10 years 1.9 5 years 2.2 2 years 2.7

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 05379000 -- Gilmore Creek at Winona, MN

Period of record 1941 -- 1963

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

Appendix 1 131

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■■

■■

■■

■■■■■■■■■

■■■■■■■■■■■■■

■■■■■■■■■■■■■■■■

■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

30

40

50

60

70

80 90100

200

300

1-Day Lowflow■

51 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 37.1 50 years 41.6 20 years 49.3 10 years 57.1 5 years 68.0 2 years 94.3

RECURRENCE INTERVAL, IN YEARS

■■■

■■

■■■■

■■■■■■■■

■■■■■■■■■■

■■■■■■■■

■■■■■■■■

■■■

■■

■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

30

40

50

60

70

80 90100

200

300

7-Day Lowflow■

51 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 43.8 50 years 47.9 20 years 55.0 10 years 62.5 5 years 73.2 2 years 101

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■■

■■■■

■■■■■■■■■■■

■■■■■■■■■■■■

■■■■■■■■■

■■■■■

■■

■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

30

40

50

60

70

80 90100

200

300

30-Day Lowflow■

51 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 50.2 50 years 54.5 20 years 61.9 10 years 69.7 5 years 80.9 2 years 110

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 05384000 -- Root River near Lanesboro, MN

Period of record 1911 -- 1999

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

132 USGS OFR 2007-1033

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■■

■■■■■■

■■■■■■

■■■■■■■■

■■■■

■■■■■

■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

10

20

30

40

50

60

1-Day Lowflow■

36 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 18.9 50 years 19.8 20 years 21.5 10 years 23.1 5 years 25.4 2 years 30.7

RECURRENCE INTERVAL, IN YEARS

■■■

■■■■■■■■■■■■■

■■■■■■■■■■■■■■■■

■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

10

20

30

40

50

60

7-Day Lowflow■

36 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 23.6 50 years 24.1 20 years 25.0 10 years 26.0 5 years 27.6 2 years 31.7

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■■

■■■■■■■■■

■■■■■■■■■■■■■■■■

■■■■

■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

10

20

30

40

50

60

30-Day Lowflow■

36 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 26.0 50 years 26.5 20 years 27.3 10 years 28.3 5 years 29.7 2 years 33.8

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 05384500 -- Rush Creek near Rushford, MN

Period of record 1943 -- 1979

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

Appendix 1 133

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■■■■■■■■■■■■■■

■■■■■■■■■

■■■■■■■■■■■■■■■■■■■■■■■■■■■

■■■■■■■

■■■■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

80

90100

200

300

400

500

600

700

1-Day Lowflow■

69 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 97.6 50 years 112 20 years 137 10 years 161 5 years 195 2 years 270

RECURRENCE INTERVAL, IN YEARS

■■

■■■■■■■■■■■

■■■■■■■■■■

■■■■■■■■■■■■■■■

■■■■■■■■■■■■■

■■■■■■■■■■■

■■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

80

90100

200

300

400

500

600

700

7-Day Lowflow■

69 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 132 50 years 144 20 years 163 10 years 182 5 years 210 2 years 276

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■

■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■

■■■■■■■

■■■■■■■■■

■■■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

80

90100

200

300

400

500

600

700

30-Day Lowflow■

69 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 167 50 years 176 20 years 192 10 years 209 5 years 233 2 years 295

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 05385000 -- Root River near Houston, MN

Period of record 1911 -- 2004

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

134 USGS OFR 2007-1033

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■■■■

■■■

■■■■■■■

■■

■■

■■■

■■■

■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

40

50

60

70

80

90

100

200

1-Day Lowflow■

30 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 44.1 50 years 46.9 20 years 51.5 10 years 56.2 5 years 62.6 2 years 78.1

RECURRENCE INTERVAL, IN YEARS

■■■■

■■■■■■■■■■■

■■■■

■■■

■■■

■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

40

50

60

70

80

90

100

200

7-Day Lowflow■

30 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 45.3 50 years 48.2 20 years 53.0 10 years 57.9 5 years 64.6 2 years 80.7

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■■

■■■■■■■■■■

■■■■■

■■■■

■■

■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

40

50

60

70

80

90

100

200

30-Day Lowflow■

30 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 46.7 50 years 49.8 20 years 55.1 10 years 60.4 5 years 67.6 2 years 84.9

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 05385500 -- South Fork Root River near Houston, MN

Period of record 1954 -- 1984

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

Appendix 1 135

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■■■■■■■

■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■

■■■■■■■■■■■■■■■■■

■■■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

3

4

5 6

8

10

20

30

40

50 60

80

100

1-Day Lowflow■

61 non-zero values2 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.0 20 years 7.7 10 years 17.7 5 years 30.9 2 years 53.4

RECURRENCE INTERVAL, IN YEARS

■■

■■■

■■■■■■■

■■■■■■■■■■

■■■■■■■■■■■■■■■■■■■■■■■

■■■■■■■■■■

■■■

■■

■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

10

20

30

40

50

60

70

80 90100

7-Day Lowflow■

63 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 14.8 50 years 17.6 20 years 22.7 10 years 27.8 5 years 34.8 2 years 50.1

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■

■■

■■

■■■■■■■

■■■■■■■■■■

■■■■■■■■■■■■

■■■■■■■■■■■

■■■■■■■■■■

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0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

20

30

40

50

60

70

80 90100

200

30-Day Lowflow■

63 non-zero values0 zero valuesEstimated streamflow

Recurrence Streamflow100 years 20.6 50 years 23.3 20 years 27.8 10 years 32.5 5 years 38.9 2 years 54.2

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 05457000 -- Cedar River near Austin, MN

Period of record 1910 -- 2004

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

136 USGS OFR 2007-1033

Page 120: Station 04010500 -- Pigeon River at Middle Falls near Grand … · 2007. 2. 8. · Station 04010500 -- Pigeon River at Middle Falls near Grand Portage MN Period of record 1922 --

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■■■■■■■■

■■■

■■■■■■■■

■■■■■■■■■■■■■■■■■

■■■■■

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■■■

0.99 0.95 0.90 0.80 0.50 0.20 0.10 0.05 0.01

1.01 1.05 1.11 1.25 2 5 10 20 100

0.05

0.10

0.20

0.50

1.00

2.00

5.00

10.00

20.00

50.00

100.00

200.00

500.00

1-Day Lowflow■

59 non-zero values10 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.0 20 years 0.0 10 years 0.0 5 years 0.3 2 years 4.4

RECURRENCE INTERVAL, IN YEARS

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■■■■■■■■■■■■■■■

■■■■■■■■■■■■■■■■■■

■■

■■■■■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

0.05

0.10

0.20

0.50

1.00

2.00

5.00

10.00

20.00

50.00

100.00

200.00

500.00

7-Day Lowflow■

61 non-zero values8 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.0 20 years 0.0 10 years 0.0 5 years 0.6 2 years 6.2

ST

RE

AM

FLO

W, I

N C

UB

IC F

EE

T P

ER

SE

CO

ND

■■

■■■

■■

■■■■■■■■■■■■■■■■■■■■

■■■■■■■■■■■■■■■■■■■■

■■■■■■■

■■■■■■

0.999 0.990 0.900 0.800 0.500 0.200 0.100 0.010 0.001

1.001 1.01 1.111 1.25 2 5 10 100 1000

0.02

0.05

0.10

0.20

0.50

1.00

2.00

5.00

10.00

20.00

50.00

100.00

200.00

30-Day Lowflow■

64 non-zero values5 zero valuesEstimated streamflow

Recurrence Streamflow100 years 0.0 50 years 0.0 20 years 0.0 10 years 0.2 5 years 1.4 2 years 11.1

NON-EXCEEDENCE PROBABILITY(Cunnane plotting position)

Station 05476000 -- Des Moines River at Jackson, MN

Period of record 1910 -- 2004

Streamflow and probability of the flow being equal to or less than the discharge for the 12-month period ending March 31

Log Normal Probability plot

December, 2006

Appendix 1 137


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