An Analysis to Determine the Safe Yield of the Water Resources of San Diego County, California

As is indicated in the following report, the safe yield of the water resources of San Diego County is definitely limited. Proposals for future expansion indicate increased yield, hut they are expensive and their benefits limited. The City of San Diego has thus of necessity turned to an outside source., the Colorado River, as an adequate supply for the future. A pipeline is at present under construction from the Metropolitan Aqueduct to supplement the present system. This study is based principally- on data and figures found in the various reports enumerated in the bibliography. The subject is a very large one, which to be adequately covered would require voluminous amounts of data and much more time than is available. However, a general survey of the conditions prevailing in San Diego County and the approximate safe yields of all major rivers is included. It is suggested that any further investigations be made for yields of single rivers in order that thorough analyses can be conducted.