L-8 Reservoir Pilot Test -Preliminary Flow and Water Quality Monitoring Results

Provisional Data for Discussion Purposes Only3-28-11

Dave SwiftLead ScientistSouth Florida Water Management District

Location of Flow Monitoring Sites =

City of WPB Control 2 Pump

Station

L-8 Reservoir Pump

Control 3 Structure

“4 Point Area”

G-161

G-160

G-92

Lainhart Dam

West Palm Beach Control 2 Pump Station (150 cfs)

L- 8 Reservoir Pump (88 cfs)

Discharge to L- 8 Canal

0

20

40

60

80

100

120

140

160

180

2/25/1

1

2/26/1

1

2/27/1

1

2/28/1

13/1

/113/2

/113/3

/113/4

/113/5

/113/6

/113/7

/113/8

/113/9

/11

3/10/1

1

3/11/1

1

3/12/1

1

3/13/1

1

3/14/1

1

3/15/1

1

3/16/1

1

3/17/1

1

3/18/1

1

Flow

(cub

ic fe

et p

er s

econ

d)

CWPB Control 2 Pump Station

Control 3 (Est) - water entering westerm GWP

L-8 Reservoir

Control 4 (CWPB Water Supply)

G-160

G-161

Start of Pilot test

Volume Acre FeetL-8 Reservoir 3,082Control 2 4,934Control 3 (est) 4,046Control 4 1,979G-161 814G-160 1,182

Summary of L-8 Reservoir Pilot Test Flows

05

101520253035404550

Flow

(cub

ic fe

et/

seco

nd)

G-92

Lainhart Dam

Start of L-8 Pilot test

MFL

ADCP measurement at G-92 on 3/14/11 = 44.9 cfs

ADCP measurement at Lainhart Dam on 3/14/11 = 42.7 cfs

Stream Flow Measurements at G-92 and Lainhart Dam

Stream Flow Measurements

taken on 3/14/11

Difference of ~16 cfs

Volume (Acre Feet)G-161 814G-160 1,182G-92 1,454Lainhart Dam 841

M-Canal

WPB Control 2 Pump Station

Flow Losses for Reach # 1 (Control 2 to Control 3)3/17/11

L-8

Rese

rvoi

r

Grassy Waters Preserve

Lake Mangonia

Clear Lake

Provisional Data

Northlake Blvd.

Southern Blvd.

Control 3

Reach #1 (9.3 miles)158 cfs

129 cfs

18% Loss (29 cfs)

Acreage

Citrus Groves

M-Canal

Reach # 2 (Control 3 to “4 Point Area” in Grassy Water Preserve)

Grassy Waters Preserve

Provisional Data Northlake Blvd.

Control 3

57% loss (73 cfs) due tostorage, ET & seepage

“4 Point Area”

Reach # 2 (3.5 miles)

129 cfs

56 cfs

G-161

56 cfs

30 c

fs

14 cfs12 cfs

To Control 4

To G

-161

Note: Control 4 closed during flow measurements

“4 Point Area”

Flow Distribution within “4 Point Area”

M-Canal

Reach # 3 (“4 Point Area” to G-161 Structure)

Grassy Waters Preserve

Provisional Data Northlake Blvd.

Control 3

“4 Point Area”

Reach # 3 (4.5 miles)

G-161 30 cfs

30 cfs

Water Quality Monitoring

(Chlorides & Total Phosphorus)

Pilot Test WQMonitoring Sites, L-8 Reservoir, L-8 Canal & M-Canal

City of WPB Control 2 Pump Station

(150 cfs)

L-8 Canal Mixing Zone (800 meters)

L-8

Res

ervo

ir

Southern Blvd.

L8MZBN

L8MZBS

L8-04.3

SW6 Out

L8MCNL

Legend:

= WQ Monitoring station

Pilot Test WQ Monitoring Sites located in Grassy Waters Preserve & Lake Mangonia

M-Canal

WPB Control 2 Pump Station

188

323

204

GW 4 GW 3 GW7

GW 8

G-161

LM 1

Baseline: Chloride Concentrations* prior to L-8 Reservoir Pilot Test (mg/l) (2/26/11)

L-8

Rese

rvoi

r

Grassy Waters Preserve

Grassy Waters Preserve

Lake Mangonia

Clear Lake

61

Provisional Data

Legend:= Established Water quality station as per Exemption

Northlake Blvd.

Southern Blvd.

Note: Class I Water Quality Standard (Drinking Water), chloride levels shall not exceed 250 ppm

* Chlorides calculated from regression equations

104

M-Canal

WPB Control 2 Pump Station

298

381

340

138

GW 4 GW 3 GW7

GW 8

G-161

LM 1

Week 1: Chloride Data (mg/l) from L-8 Reservoir Pilot Test(3/7/11)

L-8

Rese

rvoi

r

Grassy Waters Preserve

Grassy Waters Preserve

Lake Mangonia

Clear Lake

63

Provisional Data

Legend:= Established Water quality station as per Exemption

Northlake Blvd.

Southern Blvd.

Note: Class I Water Quality Standards (for drinking water), chloride levels shall not exceed 250 mg/l.

M-Canal

WPB Control 2 Pump Station

381

385

371

275

GW 4 GW 3 GW7

GW 8

G-161

LM 1

Week 2: Chloride Data (mg/l) from L-8 Reservoir Pilot Test(3/15/2011)

L-8

Res

ervo

ir

Grassy Waters Preserve

Grassy Waters Preserve

Lake Mangonia

Clear Lake

71

Provisional Data

Legend:= Established Water quality station as per Exemption= Grab sample collected on 3/15/11

Northlake Blvd.

Southern Blvd.

*Some of the calculated chloride reading at L8MZBS & L8MZBN may have been affected by low canal levels

Note: Class I Water Quality Standards (for drinking water), chloride levels shall not exceed 250 mg/l

M-Canal

WPB Control 2 Pump Station

340

390

147

286

GW 4 GW 3 GW7

GW 8

G-161

LM 1

Most Recent Chloride Data (mg/l) from L-8 Reservoir Pilot Test(3/23/11)

L-8

Rese

rvoi

r

Grassy Waters Preserve

Lake Mangonia

Clear Lake

83

Provisional Data

Legend:= Established Water quality station as per Exemption

Northlake Blvd.

Southern Blvd.

Note: Class I Water Quality Standards (for drinking water), chloride levels shall not exceed 250 mg/l

Chloride Levels in the L8 reservoir, L8 Canal & M Canal

DATE2/2

4/201

1

2/25/2

011

2/26/2

011

2/27/2

011

2/28/2

011

3/1/20

11

3/2/20

11

3/3/20

11

3/4/20

11

3/5/20

11

3/6/20

11

3/7/20

11

3/8/20

11

3/9/20

11

3/10/2

011

3/11/2

011

3/12/2

011

3/13/2

011

3/14/2

011

3/15/2

011

3/16/2

011

3/17/2

011

3/18/2

011

3/19/2

011

3/20/2

011

3/21/2

011

3/22/2

011

3/23/2

011

3/24/2

011

3/25/2

011

Chl

orid

es (c

alcu

late

d) (m

g/L)

0

50

100

150

200

250

300

350

400

450L8MZBS

L8MZBN

L8RES

L8043

L8MCNL

Star

t of P

ump

Test

Chloride Levels within L-8 Reservoir, L-8 Canal and M-Canal

Chloride Levels in Grassy Waters Preserve, G-161, & LMI

DATE2/2

4/201

1

2/25/2

011

2/26/2

011

2/27/2

011

2/28/2

011

3/1/20

11

3/2/20

11

3/3/20

11

3/4/20

11

3/5/20

11

3/6/20

11

3/7/20

11

3/8/20

11

3/9/20

11

3/10/2

011

3/11/2

011

3/12/2

011

3/13/2

011

3/14/2

011

3/15/2

011

3/16/2

011

3/17/2

011

3/18/2

011

3/19/2

011

3/20/2

011

3/21/2

011

3/22/2

011

3/23/2

011

3/24/2

011

3/25/2

011

Chl

orid

es (c

alcu

late

d) (m

g/L)

0

50

100

150

200

250

300

350

400

450GW3

GW4

G161

GW7

GW8

LMI St

art o

f Pum

p Te

st

L- 8 Reservoir Pump (75 cfs)

Discharge to L- 8 Canal

Total Phosphorus Levels

M-Canal

WPB Control 2 Pump Station

95

15

120

98

GW 4 GW 3 GW7

GW 8

G-161

LM 1

Baseline Total P Data (ppb) from L-8 Reservoir Pilot Test(2/25/11)

L-8

Rese

rvoi

r

Grassy Waters Preserve

Grassy Waters Preserve

Lake Mangonia

Clear Lake

20

Provisional Data

Legend:= Established Water quality station as per Exemption

Northlake Blvd.

Southern Blvd.

Units = parts per billion (ppb)

M-Canal

WPB Control 2 Pump Station

26

16

40

55

GW 4 GW 3 GW7

GW 8

G-161

LM 1

Pumping for 3 days: Total P Data (ppb) from L-8 Reservoir Pilot Test(3/3/11)

L-8

Rese

rvoi

r

Grassy Waters Preserve

Grassy Waters Preserve

Lake Mangonia

Clear Lake

20

Provisional Data

Legend:= Established Water quality station as per Exemption

Northlake Blvd.

Southern Blvd.

Units = parts per billion (ppb)

M-Canal

WPB Control 2 Pump Station

43

20

50

56

GW 4 GW 3 GW7

GW 8

G-161

LM 1

Pumping for 9 days: Total P Data (ppb) from L-8 Reservoir Pilot Test(3/9/11)

L-8

Rese

rvoi

r

Grassy Waters Preserve

Grassy Waters Preserve

Lake Mangonia

Clear Lake

18

Provisional Data

Legend:= Established Water quality station as per Exemption

Northlake Blvd.

Southern Blvd.

Units = parts per billion (ppb)

0

20

40

60

80

100

120

140

L8MCNL

L8043

L8MZBN

L8MZBS

SW6OUT

Start of Pilot Test

TP (p

arts

per

bill

ion)

Total Phosphorus in L-8 Reservoir, L-8 Canal and Control 2 Pump Station(2/25/11- 3/09/11)

Provisional Data

0

20

40

60

80

100

120

140

160

GW3

GW4

GW7

GW8

LMI

G161

TP (p

arts

per

bill

ion)

Total Phosphorus for Grassy Waters Preserve, G-161 and LM 12/25/11 – 3/09/11

Start of Pilot Test

Provisional Data

Next Steps Following completion of the 2011 Pilot Test:

A report will be prepared summarizing the L-8 Reservoir pilot test and its flow and water quality results for submission to FDEP

The inter-agency technical team will reconvene to discuss a plan of study for the 2012 Pilot test (Option1B) and other longer term options previously identified by the District

A work plan for Option 1B is currently being considered by management as part of the 2012 budget process