The overarching goal of the Palmdale Regional Recharge and Recovery project is to investigate the feasibility of a groundwater banking, storage, and extraction program on behalf of the Palmdale Water District (PWD or District). The selected project alternative will help meet future water demands and improve water supply reliability. New facilities will be constructed to recharge and recover State Water Project (SWP) water as well as recycled water. Infrastructure will include new spreading grounds to recharge water as well as recovery facilities. Surplus SWP water and recycled water will be stored during wet years and recovered during dry years, providing more complete utilization of SWP water and recycled water production.
Palmdale Water District (PWD) proposes the Littlerock Reservoir Sediment Removal (LRSR) Project in partnership with the Angeles National Forest, USDA Forest Service (USFS). The USFS and PWD have prepared a joint Environmental Impact Statement (EIS) and Environmental Impact Report (EIR), referred to as an EIS/EIR, to assess the environmental effects of the proposed Littlerock Sediment Removal Project.
The initial sediment removal period would take place during the time period of 2017 to 2024. Approximately 1,165,000 cubic yards of accumulated sediment will be removed from within the reservoir basin. This will restore the reservoir to the 1992 design water storage and flood control capacity. This will restore the reservoir storage lost by sediment accumulation by about 1,300 acre-feet. Following the initial sediment removal period, annual sediment removal of 38,000 cubic yards per year will be needed to maintain the increased storage capacity.