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![Page 1: Water Quality Impacts of Reservoirs Burns & McDonnell (Contract C-C20104P) Gene L. Foster November 18, 2004.](https://reader036.fdocuments.net/reader036/viewer/2022062308/56649d575503460f94a36c35/html5/thumbnails/1.jpg)
Water Quality Impacts of Reservoirs
Burns & McDonnell(Contract C-C20104P)
Gene L. FosterNovember 18, 2004
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Presentation Outline
• Study background & goals
• Project team
• Data site identification & data acquisition
• Data set analysis
• Data validation & GIS interface
• Summary & Recommendations
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Study Background
• CERP – 60+ elements to mitigate adverse environmental impacts
• WRDA of 2000 authorized 11 initial CERP projects
• EAA storage reservoir – 1 of 11 projects
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EAA Reservoir Goals
• Reduce regulatory releases from and back pumping to Lake Okeechobee
• Water storage for Everglades dry season demands
• Optimize STA performance
• Improve EAA flood control & water supply
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LTP & EAA Reservoir
• Long Term Plan:– Recognizes importance of predicting EAA Reservoir
influence on STA performance– Recommends assisting design team with water
quality analysis• EAA Reservoir research questions:
– What are quality impacts to water that passes through reservoir?
– What data are need to calibrate a reservoir water quality model?
– What data sets are available to calibrate analytical model(s)?
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WQIR Study
• Contracted with Burns & McDonnell under existing modeling contract (C-C20104P-WO02)
• Study goals– Identify water bodies similar to EAA reservoir– Collect hydrologic, climatic, physical & water
quality data for identified sites– Develop calibration data sets
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Study Team
• SFWMD– Yanling Zhao, Ph.D. and other District staff
• Burns & McDonnell Engineering Co., Inc.– Galen E. Miller, P.E.– Gene L. Foster, P.E.
• Engineering & Applied Science, Inc.– Srinivas G. Rao, Ph.D., P.E.
• Wetland Solutions, Inc.– Robert L. Knight, Ph.D.
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WQIR Work Plan
• Task 1 - Initial Project Meeting
• Task 2 - Identification of Data Sites and Data Acquisition
• Task 3 – Analysis of Data Sets
• Task 4 – Data Validation and Data Interface
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Task 2Identification of Data Sites
and Data Acquisition
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Task 2 Components
• Identify preliminary data sites
• Screen & select candidate data sites
• Collect data
• Organize & analyze data
• Screen candidate sites
• Report
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Identify Preliminary Data Sites
• Land use/land cover maps– SFWMD– SJRWMD– SWFWMD
• 100-acre minimum size
• 622 preliminary water bodies
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Preliminary Site Inventory
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Preliminary Site Screening
• Agency contacts– SFWMD, SJRWMD, SWFWMD– Florida DEP– County environmental groups
• Screening criteria:– Flow-thorough hydrology– Stage data– Plant community & physical data
• 36 candidate data sites
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Candidate Data Sites - SFWMD
• Bonnet Lake• Caloosahatchee River• FP&L Martin Co Reservoir• Lake Istokpoga• Lake Josephine• Lake Sebring• Lake Trafford• Red Beach Lake
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Candidate Data Sites - SJRWMD
• Blue Cypress WMA-E• B. Cypress WMA-W• Crescent Lake• Emeralda MCA• Kenansville Lake• Lake Disston• Lake George• Lake Harney• Lake Jessup
• Lake Monroe• Lake Norris• Lake Washington• Rodman Reservoir• St. Johns MCA• St. Johns WMA• Sunnyhill Farm• Taylor Creek Res
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Candidate Data Sites - SWFWMD
• Keystone Lake• Lake Calm• Lake Carroll• Lake Howard• Lake Magdalene• Lake Panasoffkee• Lake Parker• Lake Seminole
• Lake Thonotosassa• Medard Park Res• Tsala Apopka
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Candidate Data Sites
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LTP Coordination
• Lake Apopka
• Lake Jessup
• Brevard County Stick Marsh (SJMCA)
• Sun Ag Reservoir (BCWMA-East)
• Lake Istokpoga
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Data Acquisition
• Desired data types– Physical data– Hydrologic & water quality data– Climatic data– Operating criteria and costs
• Data sources– Internet searches– Agency contacts
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Candidate Data Site Ratings
• Primary rating criteria– Period of record 1 year or more– Inflow & outflow water volumes– Inflow, outflow & interior phosphorus conc.– Stage/elevation data w/ average depth >3 ft.
• Assigned relative ratings– Good: 8 data sites– Fair: 13 data sites– Poor: 15 data sites
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Eight Good-Rated Data Sites
• Crescent Lake• Lake George• Lake Harney• Lake Istokpoga• Lake Jessup• Lake Thonotosassa• Rodman Reservoir• St. Johns Marsh Conservation Area• A.K.A – Potential data sets
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Potential (Good-rated) Data Sites
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Task 3Analysis of Data Sets
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Task 3 Components
• Data validation
• Data summaries
• Water balances
• Phosphorus balances
• Statistical analyses
• Report
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Data Validation
• Raw data validation
• Review non-electronic data
• Verify database imports
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Data Summaries
• Key data parameters– Flow– Total phosphorus/phosphate concentration– Total nitrogen concentration– Total calcium concentration– Water level & temperature– pH
• 3 locations – inflow, outflow & interior• Time series graphs
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Water Balances
• Daily time step for period of record
• Estimated– Surface area– Gaged and ungaged inflow & outflow– Precipitation gains & evaporation losses– Lake elevation & depth– Change in storage– Imbalance term
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Phosphorus Mass Balances
• Daily estimates from periodic sample data
• Estimated– Inflow TP concentration and mass flux– Wet & dry phosphorus deposition– Outflow TP concentration and mass flux– Net phosphorus retention
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Data Set Analysis
• P retention vs. hydraulic loading rate
• Calculated settling rate (k) vs.– Hydraulic loading rate– Calcium concentration– pH– Water temperature– Depth
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Crescent Lake Stations
CRESLMCRESLM
120603120603
120602120602
120601120601
22444202244420
22443202244320
22444402244440
SAVCRL2ISAVCRL2I
DUNNSCRKDUNNSCRK
2003066220030662
2 00304612 0030461
20030662200306622 003041 52 003041 52003041120030411
2 00304102 0030410
2003040820030408
2003038520030385
2003038420030384
2003038320030383
2 003027 72 003027 7
2003027620030276
2003027520030275
2003027420030274
GFCCR0195 GFCCR0195
GFC CR0187 GFC CR0187
GFCCR0186 GFCCR0186
1206B1 1206B1
S AC S AC
LSJ075 LSJ075
HAW HAW
78867886
35183518
1485714857
1485614856
1485514855
1485314853
1485214852
1485114851
1485014850
1484914849
1484814848
1484714847
1484514845
1484314843
1484214842
1484114841
1483914839
1483614836
1483514835
1483214832
1483114831
1483014830
1427414274
1426214262
2003046720030467
1483714837
Lake GeorgeLake George
Crescent LakeCrescent Lake
Lake Di sstonLake Di sston
Lake BrowardLake Broward
Margaret LakeMargaret Lake
Stella LakeStella Lake
20
11
17
305
308
304
302
205
305A
308B
13
305
305
FLAGLER COUNTYFLAGLER COUNTY
PUTN AM COUNTYPUTN AM COUNTY
VOLUSIA COUNTYVOLUSIA COUNTY
STJOHNS COUNTYSTJOHNS COUNTY
MARION COUNTYMARION COUNTY
3 0 31.5 Miles
NORTH CRESCENT LAKEMONITORING STATIONS
Figure 3-1
LEGEND
Monitoring Station
Water Bodies
Streams
Roads
County Boundaries
Cities
1 Inch equals 3 Miles
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Crescent Lake - Flow
1975 1980 1985 1990 1995 2000 2005
Calendar Year
-1000
0
1000
2000
3000
4000
Ave
rage
Mon
thly
Flo
w (
cfs)
InflowOutflowInflow-Rolling Avg.Outflow-Rolling Avg.
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Crescent Lake – Total Phos.
1975 1980 1985 1990 1995 2000 2005
Calendar Year
0.0
0.1
0.2
0.3
0.4
To
tal P
hosp
horu
s C
once
ntr
atio
n (m
g/L
) InflowOutflowInteriorInflow-Rolling Avg.Outflow-Rolling Avg.
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Crescent Lake – Total Nitrogen
1975 1980 1985 1990 1995 2000 2005
Calendar Year
0
2
4
6
8
10
Tot
al N
itrog
en C
once
ntra
tion
(mg/
L)
InflowOutflowInteriorInflow-Rolling Avg.Outflow-Rolling Avg.
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Crescent Lake – Calcium
1975 1980 1985 1990 1995 2000 2005
Calendar Year
0
10
20
30
40
50
60
70
80
90
100
Tot
al C
alci
um C
once
ntra
tion
(mg/
L)
InflowOutflowInteriorInflow-Rolling Avg.Outflow-Rolling Avg.
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Crescent Lake - pH
1975 1980 1985 1990 1995 2000 2005
Calendar Year
4
5
6
7
8
9
10
pH
(st
anda
rd u
nits
)
InflowOutflowInteriorInflow-Rolling Avg.Outflow-Rolling Avg.
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Crescent Lake - Elevations
1975 1980 1985 1990 1995 2000 2005
Calendar Year
0
2
4
6
8
10
12
14
16
Ave
rag
e M
onth
ly W
ate
r S
urf
ace
Ele
vatio
n (f
eet)
InflowOutflowInflow-Rolling Avg.Outflow-Rolling Avg.
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Crescent Lake – Water Temp.
Crescent Lake
1975 1980 1985 1990 1995 2000 2005
Calendar Year
5
10
15
20
25
30
35
Wa
ter
Te
mpe
ratu
re (
deg
ree
s C
)
InflowOutflowInteriorInterior-Rolling Avg.
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Crescent Lake – Ret. Eff. Vs. Q
0 10 20 30 40 50 60 70
Hydraulic Loading Rate (meters/year)
-500
-400
-300
-200
-100
0
100
200
300
400
500
Ph
osp
horu
s R
ete
ntio
n E
ffici
ency
(p
erce
nt)
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Crescent Lake – K vs. Q
0 10 20 30 40 50 60 70
Hydraulic Loading Rate (meters/year)
0
10
20
30
40
50
60
Ph
osp
horu
s S
ettli
ng
Ra
te, k
(m
ete
rs/y
ear)
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Crescent Lake – K vs. Ca
0 10 20 30 40 50 60 70
Calcium Concentration (mg/L)
-10
0
10
20
30
40
50
60
Ph
osp
horu
s S
ettli
ng
Ra
te, k
(m
ete
rs/y
ear)
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Crescent Lake – K vs. Temp.
5 10 15 20 25 30 35
Water Temperature (degrees C)
-10
0
10
20
30
40
50
60
Ph
osp
horu
s S
ettli
ng
Ra
te, k
(m
ete
rs/y
ear)
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Depth Comparison
CrescentGeorge
HarneyIstokpoga
JessupThonotosassa
RodmanSJMCA
0
2
4
6
8
10
12
14
16
18D
epth
(fe
et)
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Phosphorus Retention
0 10 20 30 40 50 60 70 80Hydraulic Loading Rate (m/yr)
-10
-5
0
5
10
15
Ph
osp
ho
rus
Se
ttlin
g R
ate
, k (
m/y
r)
Crescent
George
Harney
IstokpogaJessup
Thonotosassa
Rodman
SJMCA
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Task 4Data Validation & Data Interface
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Task 4 Components
• Data validation & delivery
• GIS data interface
• Report
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Data Validation
• Daily data
• Non-daily data
• Data normalization & cleanup
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Data Summary
• 36 candidate data sites
• 18 Florida counties
• 24 collecting organizations
• 1,311 unique monitoring sites
• 824 hydrologic & water quality parameters
• 3.5 million data points
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Data Points by Site
0 50 100 150 200 250 300 350 400
Number of Data Points (thousands)
Tsala ApopkaTaylor Creek Reservoir
Sunnyhill FarmSt. Johns WMA
St. Johns MCARodman Reservoir
Red Beach LakeMedard Park
Lake WashingtonLake Trafford
Lake ThonotosassaLake Seminole
Lake Sebring
Lake ParkerLake Panasoffkee
Lake NorrisLake Monroe
Lake MagdaleneLake Josephine
Lake JessupLake Istokpoga
Lake HowardLake Harney
Lake George
Lake DisstonLake Carroll
Lake CalmKeystone Lake
Kenansville LakeFP&L Martin Co Res
Emeralda MCACrescent Lake
Caloosahatchee RiverBonnet Lake
Blue Cypress WMA-WestBlue Cypress WMA-East
Dat
a S
ite N
ame
GoodFairPoor
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Data Points by Key Parameter
0 5 10 15 20 25 30 35 40 200 300 400 500 600
Number of Data Points (thousands)
pH
Water Temperature
Total Nitrogen
Phosphorus
Orthophosphorus
Gage Height
Flow
Elevation
Depth
Calcium
Dat
a S
ite N
ame
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Web Data Interface
• Web based – access from browser
• Select one or more lakes from map or list
• Select one or more parameters from list
• Display data for selections on screen
• Export monitoring data for one or more sites
• Export water & phosphorus balances
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Web Interface - Splash Screen
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Main Web Page
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Web Interface – Zoom Into Lake
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Web Interface – Displaying Data
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Web Interface – Exporting Data
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Web Interface – Help Page
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Summary, Conclusions & Recommendations
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Summary
• 622 preliminary water bodies > 100 acres• 36 candidate sites
– 8 rated good– 13 rated fair– 15 rated poor
• 8 potential sites– 6 natural lakes– 1 reservoir– 1 marsh conservation area
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Summary (cont.)
• Data sets for potential sites– Water & phosphorus balances– POR: 6.5 to 22 years
• Data set analyses– P retention efficiency vs. q (hydraulic loading
rate)– P settling rate (k) vs. q, [Ca], pH, temperature
& depth
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Conclusions
• Most of 36 candidate data sites are natural lakes with few man-made reservoirs.
• Few of the 36 data sites are physically or operationally similar to EAA reservoir.
• For man-made water bodies, little monitoring data are available.
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Recommendations
• Continue search for man-made impoundments similar to EAA reservoir
• Interview managers to determine operating criteria & data availability
• Where necessary, conduct 1-3 years of monitoring
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On-line Resources
• WQIR Reports: www.sfwmd.gov/org/erd/ longtermplan/documents.shtml
• WQIR Data Interface: TBD
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Discussion