AZ vs. CA:10 California Exhibits, Vol. X; Nos. 458-528

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-11- voir on San Diego River, a reservoir of the city of San Diego. An aqueduct over route 1, while longer, would be largely a gravity system and would not require large amounts of critical materials, including pumps and electrical equipment. Construction of the aqueduct over route 1 would be a simpler engineering problem and could be completed within a period of 2 years. The Colorado River aqueduct, with which route 1 would connect, is already completed to a sufficient capacity to care for the emergency needs of San Diego County, and is equipped with pumps and electrical equipment at the present time. An aqueduct over route 2, while shorter, would require pumping and electrical equipment to lift the water about 3,100 feet and would require larger quantities of critical materials. It would also involve the construction of a tunnel about 39,000 feet in length. It could be built in about 3 years. The initial construction cost of the aqueduct along route 1 would be materially less than that along route 2. Route 1 would supply the supplemental water needed by Camp Pendleton and other installations in the Santa Margarita vicinity, while route 2 would not. Camp Pendleton and the other installations in that vicinity are not at present connected with the San Diego water-supply system. In the event of the occurrence of the 7-year drought, against which the city of San Diego must be protected, it is inevitable that the water supply for the naval installations at Santa Margarita will be in even worse condition than the water supply for the city of San Diego since Santa Margarita has no impounding reservoirs. This makes it even more important that the naval population, which might go as high as 65,000 people, be protected against