Department of Public Works
dpw.lacounty.gov
Sustainability
Sun Valley Park Drain and Infiltration System (Water Resources)
Summary
The Sun Valley Watershed – Sun Valley Park Drain and Infiltration System Project converted an existing municipal park into a flood mitigation, water quality treatment, and water conservation multi-use site. Localized flooding is alleviated in the area as stormwater runoff from the 21-acre drainage area is collected through a constructed storm drain system to the Sun Valley Park. Runoff is routed through a water quality treatment system at the park to remove suspended solids and heavy metals. The treated runoff is then directed into two underground infiltration basins where the water is naturally filtered and recharged into the groundwater aquifer. The water conservation benefit is estimated to be 30 acre-feet per year. The infiltration basins are buried beneath the soccer and baseball fields to maintain the park’s functionality. Vegetated swales with California native plants were also strategically placed throughout the park to treat runoff from the surrounding areas. In addition, the project also included enhancements to the park’s recreational amenities, such as new soccer and baseball fields, bleachers, sports lighting, and interpretive signage.
Benefits to Environmental Resources
The project provides multiple benefits to the local community: • Flood protection - Alleviate localized flooding through capture of stormwater runoff from 21-acre drainage area • Water quality improvement - Treatment of stormwater runoff containing trash, metals, oil, grease, suspended solids that would have otherwise discharge into the Los Angeles River • Water conservation - Infiltration of 30 acre-feet per year
Contribution to wellbeing of DPW and the County
The project also improves the quality of life for the residents through enhanced recreational amenities and interpretive signage.
Contribution to Economic Health
Construction of the project was completed in 2006 with total project cost of approximately $7 million. The project was funded by the Department of Water Resources (Local Groundwater Assistance) grant, a Proposition 12 (Murray-Hayden) grant received by TreePeople, and the Los Angeles County Flood Control District
Modified By
Lombos, Mark
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