santa margarita conjunctive use project, phase i · use project average annual yield (10,800 afy)...
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Santa Margarita Conjunctive Use Project, Phase I
August 2, 2016
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United States Versus Fallbrook
• United States Government sues all water users in Fallbrook
• Final Judgment Requires a Physical Solution between U.S. and FPUD
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United States Versus Fallbrook
• United States Government sues all water users in Fallbrook
• Final Judgment Requires a Physical Solution between U.S. and FPUD
United States Government
Fallbrook
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History of Waters of the Santa Margarita River
US. Versus Fallbrook
Two Dam Project
4 Party Agreement
Santa Margarita Conjunctive Use Project
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Santa Margarita
River Conjunctive Use Project
Average Annual Yield (10,800 AFY)
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IRWM Project Includes• Environmental Permitting
(CEQA/NEPA)
• Hydrological Modeling, Water Rights Petitions and Settlement.
• Feasibility and Final Design of FPUD Facilities
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Santa Margarita Conjunctive Use Project
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Proposed Improvements to Diversion Facilities
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Proposed Improvements to Groundwater Facilities
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Proposed Treatment/Delivery Facilities for FPUD
New Groundwater Treatment Plant
New Reservoir and Pump Station
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Water Supply/Environmental Benefits
Water Cutbacks• Provides a local
supply to buffer cutbacks of the imported supplies
• Provides imported water supplies for the base during extended droughts
Water Supply • Locally available
groundwater that has lower energy requirements than alternative supplies
• Reduces demands on the Delta
• Resolves outstanding water rights litigation on the river
Environment• Permanently
Preserved 1,400 acres of high value habitat as open space
• Modify diversion dam to facilitate passage
• Maintain flows and groundwater levels required for riparian habitat and species
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Changes Made to Project to Reduce Environmental Impacts
Reduced Maximum Diversion Rate
Provide Fish Passage Facilities and Diversion Operating Plan
Develop Adaptive Management Plan based on real time groundwater data
and modeling
Replace Sheet Pile Weir with Inflatable Weir to Restore Sediment
Transport
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Changes Made to Project to Reduce Environmental Impacts
Reduced Maximum Diversion Rate
Provide Fish Passage Facilities and Diversion Operating Plan
Develop Adaptive Management Plan based on real time groundwater data
and modeling
Replace Sheet Pile Weir with Inflatable Weir to Restore Sediment
Transport
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Lessons for Other Project Sponsors
• Federal Matching Funds
• Consultations on Steelhead (2+ years)– Species Recovery in Marginal Habitat
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Next Steps• Construction of Camp Pendleton
Facilities (Underway)
• Construction of FPUD Facilities (2017).