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accumulated runoff from Jahant Slough for total yearly rainfall amounts of 12 , 16 and 20 inches . These estimates do not take into account evaporation and seepage losses and are based on the assumption that 10% of the rainfall over the drainage area makes it into the lakes and that the lakes are empty at the start of the wet season . In most years since 1940 , any accumulated runoff in the lakes has been drained and/or pumped from the lake to the river, to allow dry farming of the lake bed. A man-made channel , labeled Point "A" , serves as the outlet to the river. A second man-made channel , labeled Point "B" , drains the North Lake into South Lake . Other modifications that have been made include the damming of a small side channel of South Lake to form a permanent water body, referred to as the "Beaver Pond" in Figure 1 . This pond is fed by irrigation tail water from a neighboring vineyard. Restoration and Water Management Plan Restoration of the lakes is intended to provide an enhanced environment for the benefit of both wildlife and the proposed golfcourse and limited recreational development . The primary objectives of the Water Management Plan are to provide a workable system to supply and maintain the lakes with an adequate amount of water to meet requirements and to provide a system for flood control . The anticipated beneficial uses of water stored in the lake include irrigation, wildlife habitat, and limited recreation. Water Procurement There are three primary sources of water available to supply the lake. These are, in order of economic preference: 1) Watershed runoff from Jahant Slough 2) Pumped water from the Mokelumne River 3) Pumped ground water . It is expected that each of these sources would contribute varying percentages to the overall water supply as hydrologic conditions change from year to year. In normal rainfall years there may be enough runoff from Jahant Slough to fill the lakes , however, it is expected that frequently there would not be enough runoff from Jahant Slough alone tc fill the lakes and supplemental water would have to be provided from the other two sources. Pumping of water from the Mokelumne River may not be possible at normal river water levels due to prior appropriation; however, considerable quantities may be available for use during periods of flood control releases from Camanche Reservoir. The aforementioned Peak Rain Flood and Snow Melt Frequency Curves shown in Figures 2 and 3 indicate that Flood releases from Camanche Reservoir of at least 1000 cubic feet per second should occur about once every two years or 1� 3