water conservation at prado dam seasonal forecasting ... · 5/17/2017 · significant wind storm...
TRANSCRIPT
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Water Conservation at Prado Dam
Seasonal Forecasting Workshop
May 17, 2017
Photo courtesy of Chris Jones, USACE (1-17-2017)
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Summary of Prado Water
Conservation through Time
Year Flood Season Non-Flood Season
1969 revision to reservoir regulation schedule
490 ft
1990 update to water control manual 494 ft
1993 MOA 494 ft 505 ft
2006 MOA 498 ft 505 ft
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Summary of Current Water
Conservation Program • Stormwater capture to elevation 498 feet
October through February
• To elevation 505 feet March through August
• Release of captured stormwater from Prado
Dam at rate that can be recharged downstream
by OCWD (350-500 cfs)
• Does not impact flood risk management
function of dam
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Efforts to Increase Stormwater
Capture at Prado
• Seeking stormwater capture to elevation 505 feet in flood
season
• Permanent change to 505 feet year-round being evaluated in
Prado Basin Feasibility Study being conducted by Corps with
OCWD as local sponsor
• Temporary deviation to 505 feet approved this flood season
• Seeking to implement temporary deviation for 5-year period to
serve as a bridge until Feasibility Study is completed & DSAC
rating is raised after SAR Mainstem is completed
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Source: USACE, 2017
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NWS San Diego, 2-15-2017
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NWS San Diego, 2-15-2017
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NWS San Diego, 2-15-2017
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