san dieguito lagoon restoration
TRANSCRIPT
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San Dieguito LagoonRestoration
FMA Presentation
July 19, 2012
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Permit History
• Permit conditions originally adopted byCommission in 1991 to mitigate forSONGS Units 2 and 3
– 150 acres of Southern California wetlands
– Science Advisory Panel with independentcontract scientists
• Commission approved San DieguitoLagoon site in November 1997 asappropriate location for wetland mitigation
• Coastal Development Permit #6-04-088 forthe San Dieguito Lagoon restorationproject was approved by Commission inOctober 2005
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Restoration Project Design
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2006
2010
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Public Access
• Coast to Crest Trail (Lagoon Segment)
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Inlet Opening
• The river channel was opened and dredging activitiescompleted September 2011 – this signified the end ofwetland construction
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Restoration Monitoring
• Compared with 3 SoCal reference wetlands– Tijuana River Estuary, Mugu Lagoon and Carpinteria Salt Marsh
• Performance Standards– Physical
• topography, water quality*, tidal prism, and habitat areas
– Biological
• biological communities*, vegetation*, Spartina canopy*,reproductive success, food chain support* and exotic species
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Beach Monitoring
• Beach Surveys– 7 survey locations
– Fall/Spring full profile surveys
– Wading depth surveys quarterly
– Analyze beach width, beach sand volume, and beach slope
• Coastal Processes Technical Panel– Review reports
– Convene if shoreline triggers are met
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Beach Monitoring
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River Channel Armoring
• Restoration project includes– Three river berm structures
– Re-engineered river bend revetment
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River Channel Armoring
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Modeling/Drainage
• Some areas of therestoration site have notperformed as modeled
• Result is change inanticipated habitat type– permanently ponded
“shallow mud flats”
– salt panne
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Future Restoration
• Feasibility Study completed by SANDAG for W19
– Potential for 50 acres of wetland creation
– Must be compatible with ongoing restoration site
– Modeling efforts underway
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Thank You