AGENDA ITEM C6 DATE: August 7, 2008 TO: Gerald J. Seeber, General Manager Donald J. Polmann, Director of Science and Engineering FROM: SUBJECT: Production Update and Hydrologic Conditions Report for June 2008 and July 2008 and the past 12-Month Period (August 1, 2007 through July 31, 2008) - Status Report SUMMARY: The following report summarizes water demand and hydrologic conditions in the three-county Tampa Bay area (Tri-county area) during June 2008 and July 2008 and the past 12-Month Period (August 1, 2007 through July 31, 2008). RECOMMENDATION: Receive Status Report. I. Rainfall/Climate Tampa Bay Water monitors daily rainfall at numerous sites on and in the vicinity of our facilities. These data are compared to historical rainfall data to help assess the current hydrologic conditions near our wellfields and surface water sources. The data are summarized below and presented geographically in Figures 1 through 3. • Tri-county rainfall during June 2008 ranged from 4.6 to 9.5 inches and averaged 0.6 inch above the historical average for the month. • Tri-county rainfall during July 2008 ranged from 5.1 to 17.2 inches and averaged 3.9 inches above the historical average for the month. Tri-county rainfall during the 12-month period ending July 31, 2008 ranged from 49.6 to 64.4 inches. The National Oceanic and Atmospheric Administration (NOAA) develops short and long-term projections (outlooks) for temperature and precipitation. The NOAA outlooks for the next 30 days and the next 90 days are as follows: • August: Above-normal temperatures, normal precipitation • August - October: Above-normal temperatures, above-normal precipitation II. Regional Demand and Production Water production and demand information for June 2008 and July 2008 are summarized below and provided in additional detail in Tables 1 through 3, and Figures 4 and 5. • June 2008 Member water demand was 264.94 mgd. • July 2008 Member water demand was 239.84 mgd. t:\board agenda\approved\c.6. jun08jul08hydro.doc
Transcript
AGENDA ITEM C6
DATE: August 7, 2008
TO: Gerald J. Seeber, General Manager
Donald J. Polmann, Director of Science and Engineering FROM:
SUBJECT: Production Update and Hydrologic Conditions Report for June 2008 and July 2008 and the past 12-Month Period (August 1, 2007 through July 31, 2008) - Status Report
SUMMARY: The following report summarizes water demand and hydrologic conditions
in the three-county Tampa Bay area (Tri-county area) during June 2008 and July 2008 and the past 12-Month Period (August 1, 2007 through July 31, 2008).
RECOMMENDATION: Receive Status Report. I. Rainfall/Climate
Tampa Bay Water monitors daily rainfall at numerous sites on and in the vicinity of our facilities. These data are compared to historical rainfall data to help assess the current hydrologic conditions near our wellfields and surface water sources. The data are summarized below and presented geographically in Figures 1 through 3.
• Tri-county rainfall during June 2008 ranged from 4.6 to 9.5 inches and averaged 0.6 inch above the historical average for the month.
• Tri-county rainfall during July 2008 ranged from 5.1 to 17.2 inches and averaged 3.9 inches above the historical average for the month.
Tri-county rainfall during the 12-month period ending July 31, 2008 ranged from 49.6 to 64.4 inches. The National Oceanic and Atmospheric Administration (NOAA) develops short and long-term projections (outlooks) for temperature and precipitation. The NOAA outlooks for the next 30 days and the next 90 days are as follows:
• August: Above-normal temperatures, normal precipitation
• August - October: Above-normal temperatures, above-normal precipitation
II. Regional Demand and Production
Water production and demand information for June 2008 and July 2008 are summarized below and provided in additional detail in Tables 1 through 3, and Figures 4 and 5.
• June 2008 Member water demand was 264.94 mgd.
• July 2008 Member water demand was 239.84 mgd.
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Gerald J. Seeber August 7, 2008 Page 2
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• Member water demand during the 12-month period ending July 31, 2008 was 245.58 mgd, or about 6.3% lower than water demand for the preceding 12-month period.
• The Consolidated Permit Wellfields 12-month running average production for the period ending July 31, 2008 was 99.35 mgd.
• The South Central Hillsborough Wellfield 12-month running average production for the period ending July 31, 2008 was 21.17 mgd.
• The average Tampa Bay Water source water distribution for the past 12 months was:
• Groundwater – 130.6 mgd (70.0% of total);
• Surface Water – 39.4 mgd (21.0% of total); and
• Seawater Desalination – 16.8 mgd (9.0% of total). III. Environmental Conditions
Tampa Bay Water closely monitors the environmental conditions around Agency wellfields and these data are used to guide production and wellfield management decisions. A summary of environmental conditions around each of the 11 Consolidated Permit Wellfields is provided in Figures 7 through 16. These figures show pumpage and rainfall at each wellfield for the past ten years as well as water level data from the Upper Floridan Aquifer and a lake or wetland located on or in the vicinity of that wellfield. Figure 6 depicts the locations of the Upper Floridan Aquifer and lake or wetland sites. A reference line is presented on the lake and wetland hydrographs to show the lake minimum level or the normal pool elevation in the wetland. The normal pool elevation of a wetland is the water surface elevation that is normally reached at the end of the rainy season during an average rainfall year. This is typically the highest water level possible in a wetland; water levels are expected to fluctuate below this elevation during the year.
Water levels in the Upper Floridan Aquifer have increased as pumpage has been reduced from these wellfields and Upper Floridan Aquifer water levels are relatively high as compared to historical levels. Water levels in lakes and wetlands respond more directly to changes in rainfall and are currently at very low levels as the Tampa Bay Area is just beginning to recover from a 2- to 3-year period of deficit rainfall. Water levels in lakes and wetlands on and in the vicinity of these wellfields will increase only as rainfall returns to normal or above-normal levels. With a sustained reduction in groundwater pumpage and normal rainfall, water levels in area lakes and wetlands should more closely approximate normal water level fluctuations.
General water level changes can be summarized as follows:
• Groundwater levels generally decreased about 1.25 feet during June 2008.
• Groundwater levels generally increased about 3.04 feet during July 2008.
• Groundwater levels at the end of July 2008 were generally 3.07 feet higher than in July 2007.
Gerald J. Seeber August 7, 2008 Page 3
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• Average water levels in 10 indicator lakes and wetlands located on and in the vicinity of the Consolidated Permit Wellfields increased 0.4 inch during June 2008, and increased about 13.4 inches during July 2008.
• Average water levels in the 10 indicator lakes and wetlands at the end of July 2008 were about 2.1 feet higher than water levels at the end of July 2007.
IV. Enhanced Surface Water System
Tampa Bay Water’s Enhanced Surface Water System is comprised of surface water withdrawals from the Alafia River, Hillsborough River and Tampa Bypass Canal and the C.W. Bill Young Regional Reservoir. Current hydrologic conditions in the three Tampa Bay Water surface water sources and the C.W. Bill Young Regional Reservoir are summarized below. Figures 17 and 18 show surface water conditions in the three river sources and Figure 19 shows the monthly storage and withdrawal volumes and cumulative storage volume of the C.W. Bill Young Regional Reservoir. In July 2008, 1.63 billion gallons were delivered to the reservoir and 121.47 million gallons were withdrawn. Stored water was 5.55 billion gallons as of July 31, 2008.
• Flow in the Alafia River was 53% below normal in June 2008, and 45% below normal in July 2008.
• Flow in the Hillsborough River was 66% below normal in June 2008, and 75% below normal in July 2008.
• Flow in the Tampa Bypass Canal was 84% below normal in June 2008, and 9% above normal in July 2008.
Attachments
63.97 63.25 64.47Total 63.97 63.25 64.47
30.79 29.87 29.53Total 30.79 29.87 29.53
0.14 0.35 0.7918.20 16.60 15.29
1.04 2.28 3.91Total 19.39 19.23 19.99
9.41 9.24 10.334.27 3.12 3.20
16.94 16.65 18.43Total 30.61 29.02 31.95
2.91 3.04 5.200.42 0.41 0.44
Total 3.33 3.44 5.64
TABLE 1
TRI-COUNTY MEMBER AVERAGE DAY DEMANDS - BY SERVICE AREA(ALL RATES IN MILLIONS OF GALLONS PER DAY)
Jul 01, 2006 -Jun 30, 2007
Jul 01, 2007 - Jun 30, 2008
Jun 2007Avg Day
Jun 2008Avg DayWater Service Area Delivery
Pinellas CountyRegional System (4) 64.38
64.38St. Petersburg
Regional System (4) 30.8330.83
NW HillsboroughNWH Dispersed Wells 0.15Regional System (4) 19.36Tampa to Hillsb. Interconnect 1.03
20.53Pasco County
Moon Lake Road WTP Infl. 9.32PCUD Disp Wells 4.44Regional System (4) 17.71
31.47New Port Richey
Maytum WTP Infl. 2.86NPR City Wellfield 0.44
3.30South Hillsborough
5.07 10.06 12.2127.69 21.30 19.86
Total 32.76 31.36 32.07
71.87 70.97 65.31
8.83 6.70 15.99Total (3) 80.70 77.66 81.29
1.04 0.94 0.970.28 0.40 0.45
Total 1.31 1.34 1.42
143.81 143.13 171.43
117.75 110.69 93.51
261.55 253.82 264.94
gHighview Booster Sta. 7.60SCHWF and BUDWF to SCH 25.69
33.28Tampa
Hillsb. River WTP Eff. (adj. for ASR & Purchased Water)
66.08
Region To Tampa (4) 16.9983.07
Env. AugmentationCross Bar Ranch 1.23Cypress Creek 0.36
1.59
Regional System (excludes augmentation) (1) 156.87
Printed On 08/01/2008
Non-Interconnected System (2) 110.00
Tri-County Member Demand (excludes augmentation) 266.87
(1) "Interconnected System" includes the Cypress Creek, Cross Bar Ranch, Northwest Hillsborough, Cypress Bridge, Morris Bridge, Eldridge Wilde, South Pasco, Section 21 and Cosme Odessa Wellfields.
(2) "Non-Interconnected System" refers to wellfields and surface water facilities serving specific regions such as the Starkey, North Pasco, and South Central Hillsborough Wellfields, the New Port Richey Wellfield, the Pasco County Dispersed Wells and the Hillsborough River.
(3) Tampa total = Hillsborough River WTP Effluent + Region to Tampa - Tampa to Hillsborough Interconnect - US 301 Interconnect - ASR storage. The WTP effluent is adjusted to reflect water being pumped into ASR and water purchased by Tampa Bay Water.
(4) "Regional System" includes the interconnected wellfields plus treated surface water, desalinated water and purchased water. The Starkey and North Pasco Wellfields became interconnected to the Regional System in December 2007; at that time, influent to the Moon Lake Road WTP and Maytum WTP was Regional System water.
Page 1 of 1
64.36 62.64 58.65Total 64.36 62.64 58.65
30.69 29.71 28.37Total 30.69 29.71 28.37
0.14 0.40 0.7118.29 16.37 14.471.03 2.37 2.13
Total 19.46 19.14 17.32
9.40 9.12 7.714.22 3.06 3.20
16.96 16.59 15.65Total 30.57 28.77 26.56
2.91 3.16 4.320 42 0 37 0 45
Maytum WTP Infl. 2.81NPR City Wellfield 0 44
PCUD Disp Wells 3.67Regional System (4) 16.38
29.19New Port Richey
Tampa to Hillsb. Interconnect 1.0418.42
Pasco CountyMoon Lake Road WTP Infl. 9.14
30.37NW Hillsborough
NWH Dispersed Wells 0.08Regional System (4) 17.29
Pinellas CountyRegional System (4) 65.98
65.98St. Petersburg
Regional System (4) 30.37
TABLE 2
TRI-COUNTY MEMBER AVERAGE DAY DEMANDS - BY SERVICE AREA(ALL RATES IN MILLIONS OF GALLONS PER DAY)
Aug 01, 2006 -Jul 31, 2007
Aug 01, 2007 - Jul 31, 2008
Jul 2007Avg Day
Jul 2008Avg DayWater Service Area Delivery
0.42 0.37 0.45Total 3.33 3.53 4.77
5.29 10.09 7.1827.59 20.94 19.50
Total 32.88 31.03 26.67
71.36 64.61 77.50
9.36 6.17 0.00Total (3) 80.72 70.78 77.50
1.05 0.92 0.770.27 0.38 0.19
Total 1.33 1.30 0.96
144.94 141.57 136.35
117.06 104.03 103.49
262.01 245.59 239.84
Non-Interconnected System (2) 112.47
Tri-County Member Demand (excludes augmentation) 255.58
(1) "Interconnected System" includes the Cypress Creek, Cross Bar Ranch, Northwest Hillsborough, Cypress Bridge, Morris Bridge, Eldridge Wilde, South Pasco, Section 21 and Cosme Odessa Wellfields.
(2) "Non-Interconnected System" refers to wellfields and surface water facilities serving specific regions such as the Starkey, North Pasco, and South Central Hillsborough Wellfields, the New Port Richey Wellfield, the Pasco County Dispersed Wells and the Hillsborough River.
(3) Tampa total = Hillsborough River WTP Effluent + Region to Tampa - Tampa to Hillsborough Interconnect - US 301 Interconnect - ASR storage. The WTP effluent is adjusted to reflect water being pumped into ASR and water purchased by Tampa Bay Water.
(4) "Regional System" includes the interconnected wellfields plus treated surface water, desalinated water and purchased water. The Starkey and North Pasco Wellfields became interconnected to the Regional System in December 2007; at that time, influent to the
Cross Bar Ranch 1.01Cypress Creek 0.51
1.52
Regional System (excludes augmentation) (1) 143.12
Hillsb. River WTP Eff. (adj. for ASR & Purchased Water)
71.45
Region To Tampa (4) 6.3377.78
Env. Augmentation
Highview Booster Sta. 6.76SCHWF and BUDWF to SCH 23.84
30.60Tampa
NPR City Wellfield 0.443.24
South Hillsborough
y g y ; ,Moon Lake Road WTP and Maytum WTP was Regional System water.
Page 1 of 1
Regional Production Table
Month
Consolidated Permit Wellfields Actual Monthly
Production (mgd)
Surface Water Treatment
Plant Production (mgd) (1)
Seawater Desalination
Plant Production
(mgd)
South-Central Hillsborough Service Area
(mgd) (2)June (2007) 112.9 42.9 15.5 33.0
July 114.2 36.9 7.3 30.6August 122.2 21.5 8.0 31.3
September 119.7 21.3 7.1 31.5October 108.2 21.4 22.6 29.8
November 119.5 19.2 18.5 33.5December 132.2 18.4 10.7 31.2
(1) Includes BUDW flow to Regional System(2) Includes South Central Hillsborough Wellfield and that portion of Brandon Urban Dispersed Wellfield water delivered to South-Central Hillsborough service area, and Regional deliveries to Highview and the Lithia Water Treatment Plant.
June 2008 Rainfall
Figure 1
7.9” Example of ActualMonthly Rainfall
(+0.5”) - Variance FromNormal (NOAA)
July 2008 Rainfall
Figure 2
5.1” Example of ActualMonthly Rainfall
(-2.4”) - Variance FromNormal (NOAA)
Cumulative Rainfall For The Past 12 Months(August 1, 2007 Through July 31, 2008)( g g J y )
Figure 3
49.6” Example of ActualRainfall
(-1.1”) - Variance FromNormal (NOAA)
12 Month Running Average and Monthly Production - Consolidated WUP Wellfields
Figure 4
190200210220
(12 month running average = 99.35 mgd as of 7/31/08)
Monthly Production(11 Wellfields)
150160170180190
MG
D
12 Month Running Average (11 Wellfields)
100110120130140
odu
ctio
n in
M
121 d C li Li i
60708090
100
Pro 121 mgd Compliance Limit
90 mgd Compliance Limit
50
Actual productionWY 1998 through WY 2008 (To Date)
p7/31/08
South Central Hillsborough Service Area Demand and Supply pp y
Figure 5
18
20
32
34
36
Compliance Level for SCH Wellfield (24.1 MGD)
(12 month running average = 21.17 mgd as of 7/31/08)
12
14
16
26
28
30
32
MG
D)
ctio
n (M
GD
)
Monthly Production SCH Wellfield
8
10
12
20
22
24
W P
rodu
ctio
n (M
ellf
ield
Pro
du
c
2
4
6
12
14
16
18
BU
DW
SCH
We
12-Month Running Average from SCH Wellfield
BUDW Delivery to SCH Service Area
0
2
10
12
WY 2000 through WY 2008 (To Date)
Monitoring Site Location Map
ll
Figure 6
Site T-3
Well NRW-D
Site S-95
Well PZ-4D
Well TMR-4D Site W56
Well PZ 4D
Site NW122716
Well 2N
Site PT322618
Well SR-54DWell FL-5-5000
Well J-26Ad Site 32Starvation lake
Well RMP-18D
Site 142817
Well MBR-6DSite MBR-16
Site SE142717 Well Cosme-3
Floridan Monitoring Well SiteSurface Water Monitoring Site
100
Rainfall30
Floridan Aquifer LevelsWell 2N
Eldridge Wilde Wellfield Figure 7
50
60
70
80
90
Rai
nfal
l (in
ches
)
WY 2008 Rainfall Through July 200815
20
25
Water Level (Feet NGVD)
0
10
20
30
40
Year
ly T
otal
R
0
5
10
W
0
Water Year
WetlandWater Levels Site NW122716
0
2N Annual Refernce Point
Wellfield Production (mgd)
27
29
31
33
35
t NGVD
)
Normal Pool
Site NW122716
30
35
40
45
uction
(mgd)
19
21
23
25
Water Le
vel (Feet
10
15
20
25
Mon
thly Average
Produ
15
17
NW122716 Normal Pool Annual Reference Point
0
5
Section 21 Wellfield
50
Floridan Aquifer LevelsWell J26‐Ad
100
Rainfall
Figure 8
35
40
45
Level (Feet NGVD)
50
60
70
80
90
ainf
all (
inch
es)
WY 2008 Rainfall Through July 2008
25
30
35
Water L
0
10
20
30
40
Year
ly T
otal
Ra
20
J26‐Ad Annual Reference Point
0
Water Year
LakeWater LevelsStarvation Lake
Wellfield Production (mgd)
47
49
51
53
55Starvation Lake
et NGVD
)
Proposed MinimumLevel
10
12
14
uction
(mgd)
37
39
41
43
45Water Le
vel (Fee
2
4
6
8
Mon
thly Average
Produ
35
Starvation Lake Proposed Minimum Level Annual Reference Point
0
2
Cosme-Odessa Wellfield
40
Floridan Aquifer LevelsWell Cosme‐3
100
Rainfall
Figure 9
25
30
35
Water Level (Feet N
GVD)
50
60
70
80
90
Rai
nfal
l (in
ches
)
WY 2008 Rainfall Through July 2008
10
15
20
W
0
10
20
30
40
Year
ly T
otal
R
10
Cosme‐3 Annual Reference Point
0
Water Year
WetlandWater LevelsSite SE142717
Wellfield Production (mgd)
47
49
51
53
55Site SE142717
NGVD)
Normal Pool
10
12
14
16
tion
(mgd)
39
41
43
45
Water Le
vel (Feet N
4
6
8
Mon
thly Average
Produ
ct
35
37
SE142717 Normal Pool Annual Reference Point
0
2
Starkey/North Pasco Wellfields
45
Floridan Aquifer LevelsWell PZ‐4D
100
Rainfall
Figure 10
30
35
40
Water Level (Feet N
GVD)
50
60
70
80
90
Rai
nfal
l (in
ches
)
WY 2008 Rainfall Through July 2008
15
20
25
0
10
20
30
40
Year
ly T
otal
PZ‐4D Annual Reference PointWater Year
45
WetlandWater LevelsSite S‐95
Wellfield Production (mgd)
37
39
41
43
et NGVD)
Normal Pool
12
14
16
18
20
duction (m
gd)
27
29
31
33
35
Water Le
vel (Fee
4
6
8
10
Mon
thly Average
Prod
25
27
S‐95 Normal Pool Annual Reference Point
0
2
South Pasco Wellfield
60
Floridan Aquifer LevelsWell SR‐54D
100
Rainfall
Figure 11
45
50
55
Water Level (Feet N
GVD)
50
60
70
80
90
Rai
nfal
l (in
ches
)
WY 2008 Rainfall Through July 2008
30
35
40
W
0
10
20
30
40
Year
ly T
otal
R
SR‐54D Annual Reference PointWater Year
WetlandWater LevelsSit PT322618
Wellfield Production (mgd)
57
59
61
63
65Site PT322618
NGVD
)
Normal Pool
14
16
18
20
tion
(mgd)
49
51
53
55
Water Le
vel (Feet
4
6
8
10
12
Mon
thly Average
Produ
ct
45
47
PT322618 Normal Pool Annual Reference Point
0
2
Northwest Hillsborough Regional Wellfield
60
Floridan Aquifer LevelsWell RMP‐18D
100
Rainfall
Figure 12
30
40
50
Water Level (Feet N
GVD)
50
60
70
80
90
Rai
nfal
l (in
ches
)
WY 2008 Rainfall Through July 2008
0
10
20
W
0
10
20
30
40
Year
ly T
otal
R
RMP‐18D Annual Reference PointWater Year
WetlandWater LevelsSite 142817
Wellfield Production (mgd)
12
14
16
18
20Site 142817
NGVD)
Normal Pool
10
12
14
16
ction (m
gd)
4
6
8
10
Water Le
vel (Feet N
4
6
8
10
Mon
thly Average
Produ
uc
0
2
Site 142817 Normal Pool Annual Reference Point
0
2
Morris Bridge Wellfield
40
Floridan Aquifer LevelsWell MBR‐6D
100
Rainfall
Figure 13
25
30
35
Water Level (Feet N
GVD)
50
60
70
80
90
Rai
nfal
l (in
ches
)
WY 2008 Rainfall Through July 2008
10
15
20
W
0
10
20
30
40
Year
ly T
otal
R
MBR‐6D Annual Reference Point
Water Year
Wellfield Production (mgd) WetlandWater Levels Site MBR 16
20
25
30
tion
(mgd)
37
39
41
43
45Site MBR‐16
t NGVD)
5
10
15
Mon
thly Average
Produ
ct
29
31
33
35
Water Le
vel (Fee
Normal Pool
0
5
25
27
MBR‐16 Normal Pool Annual Reference Point
Cypress Creek Wellfield
70
Floridan Aquifer LevelsWell TMR‐4D
100
Rainfall
Figure 14
55
60
65
Water Level (Feet N
GVD)
50
60
70
80
90
Rai
nfal
l (in
ches
)
WY 2008 Rainfall Through July 2008
40
45
50
W
0
10
20
30
40
Year
ly T
otal
R
TMR‐4D Annual Reference Point
Water Year
WetlandWater LevelsWellfield Production (mgd)
69
71
73
75Site W‐56
GVD)
30
35
40
45
on (mgd)
( g )
59
61
63
65
67Water Le
vel (Feet NG
Normal Pool
10
15
20
25
Mon
thly Average
Produ
ctio
55
57
Site W‐56 Normal Pool Annual Reference Point
0
5
Cypress Bridge Wellfield
70
Floridan Aquifer LevelsWell FL‐5‐5000
100
Rainfall
Figure 15
55
60
65
Level (Feet NGVD)
50
60
70
80
90
Rai
nfal
l (in
ches
)
WY 2008 Rainfall Through July 2008
40
45
50Water
0
10
20
30
40
Year
ly T
otal
R
FL‐5‐5000 Annual Reference Point
Water Year
WetlandWater LevelsSite #32
Wellfield Production (mgd)
47
49
51
53
55Site #32
t NGVD)
Normal Pool
12
14
16
18
20
ction (m
gd)
39
41
43
45
Water Le
vel (Feet
4
6
8
10
12
Mon
thly Average
Produ
35
37
Site #32 Normal Pool Annual Reference Point
0
2
Cross Bar Ranch Wellfield
50
Floridan Aquifer LevelsWell NRW‐D
100
Rainfall
Figure 16
35
40
45
er Level (Feet N
GVD)
50
60
70
80
90
Rai
nfal
l (in
ches
)
WY 2008 Rainfall Through July 2008
20
25
30Wate
0
10
20
30
40
Year
ly T
otal
R
NRW‐D Annual Reference PointWater Year
WetlandWater LevelsSite T 3
Wellfield Production (mgd)
67
69
71
73
75Site T‐3
NGVD)
Normal Pool
25
30
35
40
tion
(mgd)
59
61
63
65
67
Water Le
vel (Feet N
10
15
20
25
Mon
thly Average
Produ
ct
55
57
T‐3 Normal Pool Annual Reference Point
0
5
Regional Surface Water Discharge June 2008J
Hillsborough at Morris Bridge (1) Figure 17
11200
1400
Historical Average
Jun 2008
Jun 2007
Typical Jun
35.08 mgd29.63 mgd
103.61 mgd
1
23
400
600
800
1000
Dis
char
ge (m
gd)
Actual Discharge (MGD)
gDischarge (MGD)
*TBC at S-160 (2)
Estimated Flow, Alafia at Bell Shoals (3)
1400
0
200
1400
Jun 2008102.41 mgd A l Di h
800
1000
1200
ge (m
gd)
Actual Discharge (MGD) Historical Average
Di h (MGD)
9.43 mgd
10.04 mgd
59.23 mgd
Jun 2008
Jun 2007
Typical Jun
800
1000
1200
rge
(mgd
)
Jun 20080 .4 gd
Jun 200736.58 mgd
Typical Jun217.29 mgd
Historical Average Discharge (MGD)
Actual Discharge (MGD)
0
200
400
600
Dis
char
g ( )Discharge (MGD)
0
200
400
600D
isch
ar
*Please note, TBC at S-160 flow is actual flow, plus production quantities.
0 0
Regional Surface Water Discharge July 2008J y
Hillsborough at Morris Bridge (1) Figure 18
11200
1400
Historical Average Di h (MGD)
Jul 2008
Jul 2007
Typical Jul
43.66 mgd73.16 mgd
172.73 mgd
1
23
400
600
800
1000
Dis
char
ge (m
gd)
Actual Discharge (MGD)
Discharge (MGD)
*TBC at S-160 (2)Estimated Flow, Alafia at Bell
Shoals (3)
0
200
1400
76.50 mgd Jul 2008
1400
Jul 2008210.29 mgd Actual Discharge
800
1000
1200
arge
(mgd
)
Actual Discharge (MGD) Historical Average
Discharge (MGD)
g
23.38 mgd
70.48 mgd
J
Jul 2007
Typical Jul
800
1000
1200
arge
(mgd
)
Jul 200798.44 mgd
Typical Jul383.41 mgd
Historical Average Discharge (MGD)
Actual Discharge (MGD)
0
200
400
600
Dis
cha g ( )
0
200
400
600
Dis
cha
*Please note, TBC at S-160 flow is actual flow, plus production quantities.
Reservoir Monthly Storage, Withdrawal, and Cumulative Storage Volume
