Abstract
In semiarid parts of the United States, water conservation is of great importance. The artificial recharge of ground-water basins, which in Los Angeles County (California) has been practiced for approximately 60 yr, has proved to be a beneficial conservation measure. Since June, 1915, the Los Angeles County Flood Control District has had the dual function of flood control and water conservation. From June, 1915, to January 1, 1955, the district, in cooperation with local agencies, has added approximately 1,200,000 acre-ft of potable water to the ground-water supply through both percolation from basins in off-channel spreading grounds and injection through wells. Percolation from basins is normally associated with shallow spreading basins overlying open aquifers and injection through wells with confined aquifers.
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More From: Transactions of the American Society of Civil Engineers
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