Artificial Recharge with Imported and Reclaimed Waters in Central and West Coast Basins of Los Angeles County

by Richard A. Rhone, Bookman-Edmonston Engineering Inc, United States,
Harold V. Morgan, Bookman-Edmonston Engineering Inc, United States,

Document Type: Proceeding Paper

Part of: Artificial Recharge of Ground Water


Since 1952 over 4,000,000 acre-feet of imported water and reclaimed waste water have been purchased to recharge the ground waters of the Central and West Coast Basins of Los Angeles County. These purchases supplement the spreading of local storm flow and rising water from the San Gabriel Valley. Water is spread in off-channel spreading basins and specially maintained sections of river in the Whittier Narrows area. The purchase of water for spreading currently is at an average rate of approximately 90,000 acre-feet per year. Local water spreading is variable ranging from 16,000 to 130,000 acre-feet in recent years. Spreading of reclaimed waste water is supported by an intensive water quality monitoring program. Ground water recharge by spreading is in addition to other recharge operations in the Central and West Coast Basin including injection of water along the coast and in-lieu ground water replenishment.

Subject Headings: Water reclamation | Groundwater recharge | Artificial recharge | Sea water | Recharge basins | Water pollution | Water quality | Land reclamation | Los Angeles | California | United States

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