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January 2013

January 2013. Stormwater 101. Southern California Needs More Local Water Supplies Approximately ½ of Southern CA’s water comes from imported sources : Colorado River Sacramento-San Joaquin River Delta

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January 2013

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  1. January 2013

  2. Stormwater 101 • Southern California Needs More Local Water Supplies • Approximately ½ of Southern CA’s water comes from imported sources: • Colorado River • Sacramento-San Joaquin River Delta • Climate change, aging infrastructure and impacted habitats are further reducing the reliability of the major delivery systems of imported water • CA needs to invest in statewide action to improve reliability of imported water & we need to develop more local water supply options here in So Cal • More than 3 million people added to the population while imported water use has remained essentially the same • In the future So Cal water agencies will meet demands of population growth through conservation efforts and new local supply projects

  3. Stormwater 101 • Stormwater is an Underutilized Resource • It’s a basic idea: when it rains we need to be • able to capture that water, store it and then • use it later • In highly developed urban areas, the water • simply has nowhere to go • Water runs down the street picking up • garbage and bacteria, ultimately polluting our streams, rivers & ocean • Billions of gallons of freshwater are lost every year because we don’t have enough stormwater capture systems in place • In this dry climate we need to make the most of our existing water sources and use them as efficiently as possible

  4. Capturing More Stormwater • A Smart and Sensible Solution • Capture stormwater when flows run high – reuse it in your garden, reroute it to prevent neighborhood flooding, bank it in a surface reservoir or infiltrate into a groundwater basin and save it for a future dry day. • Capturing stormwater is viable, cost-effective and environmentally responsible • 500,000 acre-feet of stormwater is currently captured and recharged into Southern California groundwater basins in an average year • Enough water to supply three million people for a year

  5. Capturing More Stormwater

  6. Benefits of Capturing More Stormwater • Capturing stormwater gives public water agencies access to additional, local water supplies that will help meet demand and provide emergency local supplies to help offset future droughts or disruptions to imported supplies • Create more local water supplies: Additional stormwater projects in the Southland could potentially double the amount of stormwater captured in an average year • Reduce polluted run-off: Each year 30 billion gallons of stormwater and urban runoff moves through LA County. Capturing this water can help prevent pollution from city streets pouring into our rivers, streams and ocean. • Provide a cost-effective water supply option: Stormwater capture is a cost-effective new supply that can help improve reliability and stabilize water costs

  7. Moving the Needle • The development of regional, consensus-based strategies for effective stormwater management is a priority for the Southern California Water Committee and the California Water Foundation • Expanding on existing information, collaborating with public and private organizations across the region and investing in projects that have proven to be feasible and efficient are all sensible goals • Moving the needle on local water supplies though will take foresight, collaboration and commitment from our local, regional and statewide leaders • We’ve seen some early successes, but there’s much more to do

  8. Successful Projects • Individual: Rain Gardens • A rain garden allows 30% more water to seep in to the ground than a conventional lawn • The native plants used in rain gardens require less water and less fertilizer than a conventional lawn

  9. Successful Projects • Neighborhood: Sun Valley Park Project • Transformed an ordinary park into a multipurpose watershed management project, including two underground infiltration basins • Reduced neighborhood flooding by capturing stormwater for groundwater recharge • Water percolates into aquifers underneath playing fields • Sun Valley Park in Los Angeles County can capture enough water for 60 families for a year

  10. Successful Projects • Large-Scale: Prado Dam • Storing stormwater behind the dam in Riverside County for percolation into the Santa Ana River • Increasing water supply reliability for residents and businesses

  11. Pump Up The Volume Pump Up The Volume is a public education program developed by the Southern California Water Committee and sponsored by the California Water Foundation. For more information or for copies of the Pump Up The Volume brochure please visit www.socalwater.org or www.californiawaterfoundation.org.

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