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LAKE OKEECHOBEE WATERSHED RESTORATION
April 4th, 2014 Public Workshop
INTEGRATED PROJECT IMPLEMENTATION REPORT& ENVIRONMENTAL IMPACT STATEMENT
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US Army Corps of Engineers
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COMPREHENSIVE EVERGLADES RESTORATION PLAN
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LAKE OKEECHOBEE WATERSHED PROJECTAS A COMPONENT OF COMPREHENSIVE EVERGLADES
RESTORATION
Four of the 68 components of CERP are contained within the Lake Okeechobee Watershed Project
LOWP PROJECT OBJECTIVES1. Improve quantity, timing and distribution of flows into Lake Okeechobee to maintain ecologically desired lake stage ranges
2. Improve the salinity regime and the quality of oyster, submerged aquatic vegetation, and other estuarine community habitats in the northern estuaries
3. Increase spatial extent and functionality of wetland habitat throughout the Lake Okeechobee watershed
4. Proposed scope addition: Increase water supply availability for existing permitted water users of Lake Okeechobee
COMPREHENSIVE EVERGLADES RESTORATION PLAN
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PLAN FORMULATION3-PHASED PLANNING APPROACH
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PHASE 1Measures
that improve Lake Okeechobee stage conditions, increase availability of water
supply, and high and low discharges to the
Northern Estuaries (Objectives 1, 2 and 4)
PHASE 2Measures
that increase the spatial extent &
functionality of aquatic and wildlife habitat in
the Lake Okeechobee watershed (Objective
3)
Reservoirs and ASR Wells Watershed wetland restoration
PHASE 3Measures
that improve damaging high
discharges to the Northern Estuaries
(Objective 2)
Deep Injection Wells
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PLAN FORMULATIONPHASE 1: FORMULATION FOR IMPROVEMENT OF
LAKE OKEECHOBEE STAGES, DISCHARGES TO ESTUARIES, & WATER SUPPLYReservoir Placement and Sizing Considerations Land Suitability Model to identify ‘constraint
free’ sites Analysis of spatial relationships between
reservoir sites 20 reservoir sites initially considered
Scoring/Screening Sites
Reservoirs Retained for Alternative Formulation• K05 North• K05 South• K-42• I-01
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LAKEOKEECHOBEE
C-41 Canal
N. Lake OReservoir
C-40 Canal
NicodemusSlough
Kissimmee/Paradise Run
Taylor Creek
PortMayaca
LakesideRanch
PLAN FORMULATIONPHASE 1: FORMULATION FOR IMPROVEMENT OF
LAKE OKEECHOBEE STAGES, DISCHARGES TO ESTUARIES & WATER SUPPLY
• Groundwater modeling simulations in the 2015 CERP ASR Regional Study concluded that 80 ASR wells could be constructed within the northern Lake Okeechobee basin on SFWMD rights of way based on hydrogeologic performance measures.
• Up to 112 ASR considered for this study by including reservoir-assisted ASR wells (placing ASR wells on LOWP reservoir perimeters for greater operational flexibility)
ASR Formulation Strategy: Add increments of 60 to 112 ASR wells to reservoir configurations per alternative
POTENTIAL ASR LOCATIONS (SFWMD-OWNED LANDS)
FISHEATING CREEKINDIAN PRAIRIES-65DS-65ETAYLOR CREEK/NUBBIN SLOUGH
SUB-BASINS
Not to Scale
AQUIFER, STORAGE & RECOVERY (ASR)
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Fish Slough
IP-10
Kissimmee River
Lake O West
Paradise Run
Indian Prairie
Six-MileMarsh
FisheatingCreek
BootheelCreek Lake O
East
POTENTIAL WETLAND SITES
FISHEATING CREEKINDIAN PRAIRIES-65DS-65ETAYLOR CREEK/NUBBIN SLOUGH
SUB-BASINS
Not to Scale
Wetland Restoration Component• 3,500 acre CERP Yellow Book Target• Sites ranked on the following performance
measures:
PLAN FORMULATIONPHASE 2: FORMULATION TO INCREASE SPATIAL EXTENT OF HABITAT
WITHIN LAKE AND SURROUNDING WATERSHED
Top 4 Sites for conceptual design, cost, and habitat unit calculations • Kissimmee River ~3,300 acres• Lake Okeechobee West ~2,800 acres• Paradise Run ~4,000 acres• IP-10 ~3,500 acres
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PLAN FORMULATIONPHASE 3: FORMULATION FOR IMPROVEMENT OF DAMAGING HIGH DISCHARGES TO ESTUARIES
DEEP INJECTION WELLS DIWs provide an additional outlet for excess
Lake Okeechobee water to reduce damaging regulatory releases to the coastal estuaries
DIWs would be used strategically only when regulatory Lake Okeechobee releases are being triggered by high water levels, thus diverting portions of excess flows into DIWs, rather than discharging to the estuaries
Modeling shows no impact to lake stages or water supply (due to conservative operational rules)
Proposing range of 30-90 DIWs in 3 alternatives (15 million gallons/day capacity each)
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INITIAL ARRAY OF ALTERNATIVES
1ST ROUND OF MODELING 2ND ROUND OF MODELING
1st round of modeling and benefits calculation to optimize water storage and recovery for improvement in high and low lake stages and estuary releases,
2nd round of modeling and benefits calculation to optimize water management measures for improvement in undesirable high regulatory discharges to northern estuaries along with wetland restoration measures
Alternative
Reservoir Component ASR Component DIW Component
Compatible Wetland ComponentsReservoir (s)
Storage Capacity
(acre-feet)
# of ASR wells (assuming 5mgd
capacity)
# of DIWs (assuming
15mgd capacity)
No Action
Alternative 1 K05 North and K05 South 267K 60 - 110 30-90 Kissimmee River
Paradise Run
Alternative 2a K-05 North, K-05 South, and K-42 437K 60 - 110 0
Kissimmee RiverParadise RunLake O West
IP-10
Alternative 2b* K-05 North and K-42 291K 60 - 110 30-90
Kissimmee RiverParadise RunLake O West
IP-10
Alternative 3 K-42 and I-01 295K 60 - 112 30-90Kissimmee River
Paradise RunLake O West
*Note: this alternative was a later add-on and was not included in first round of modeling)
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PROJECT ALTERNATIVES
Alternative 1Reservoirs (Blue)• K05 North (~8,000 acres)• K05 South (~10,000 acres)
Compatible Wetlands (Green)• Kissimmee River (~3,300
acres)• Paradise Run (~4,000 acres)
• ASR wells: 60-110 at 5mgd capacity
• DIWs: 30-90 at 15mgd capacity
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PROJECT ALTERNATIVESAlternative 2a
Reservoirs (Blue)• K05 North (~8,000 acres)• K05 South (~10,000 acres)• K42 (~12,000 acres)
Compatible Wetlands (Green)• Kissimmee River (~3,300
acres)• Paradise Run (~4,000 acres)• Lake O West (~2,800 acres)• IP-10 (~3,500 acres)
• ASR wells: 60-110 at 5mgd capacity
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PROJECT ALTERNATIVESAlternative 2b
Reservoirs (Blue)• K05 North (~8,000 acres)• K42 (~12,000 acres)
Compatible Wetlands (Green)• Kissimmee River (~3,300
acres)• Paradise Run (~4,000 acres)• Lake O West (~2,800 acres)• IP-10 (~3,500 acres)
• ASR wells: 60-110 at 5mgd capacity
• DIWs: 30-90 at 15mgd capacity
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PROJECT ALTERNATIVESAlternative 3
Reservoirs (Blue)• K42 (~12,000 acres)• I-01 (~10,000 acres)
Compatible Wetlands (Green)• Kissimmee River (~3,300
acres)• Paradise Run (~4,000 acres)• Lake O West (~2,800 acres)
• ASR wells: 60-110 at 5mgd capacity
• DIWs: 30-90 at 15mgd capacity