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The San Diego Aqueduct is a system of four aqueducts in the U.S. state of California, supplying about 70 percent of the water supply for the city of San Diego. [1] The system comprises the First and Second San Diego Aqueducts, carrying water from the Colorado River west to reservoirs on the outskirts of San Diego.
Spanish missionaries in the San Diego area in 1769 noticed that the local water supply was in need of infrastructure, such as dams and aqueducts, to increase supply to the area. [4] One of the first water projects in San Diego was Old Mission Dam which preceded the erection of six privately funded dams between 1887 and 1897, all of which are ...
Miramar Reservoir is a reservoir in the Scripps Ranch community of San Diego, California. Owned, operated and maintained by the City of San Diego, the reservoir and its 165-foot tall earthen embankment dam were completed in 1960 as part of the second San Diego Aqueduct project. [ 1 ]
It is a cooperative of fourteen cities, eleven municipal water districts, and one county water authority, that provides water to 19 million people in a 5,200-square-mile (13,000 km 2) service area. It was created by an act of the California State Legislature in 1928, primarily to build and operate the Colorado River Aqueduct .
The cost of water from the plant will be $100 to $200 more per acre-foot than recycled water (approximately 0.045 cents per gallon), $1,000 to $1,100 more than reservoir water (approx. 0.32 cents per gallon), but $100 to $200 less than importing water from outside the county. [42] As of April 2015, San Diego County imported 90% of its water. [13]
When full, the reservoir covers 1,234 acres (4.99 km 2), has a maximum water depth of 115 feet (35 m), and a shoreline of 27 miles (43 km). [1] Lake Hodges is owned by the City of San Diego and supplies water to the San Dieguito Water District and Santa Fe Irrigation District. Lake Hodges has a total capacity of 30,251 acre-feet of water. [2]
Plumas County Flood Control & Water Conservation District 2,600 3,200 <0.1% San Bernardino Valley Municipal Water District 102,600 126,600 2.5% San Gabriel Valley Municipal Water District 28,800 35,500 0.7% San Gorgonio Pass Water Agency 17,300 21,300 4.2% San Luis Obispo County Flood Control and Water Conservation District 25,000 31,000 0.6%
The city of San Diego purchased the dam from Mountain Water Company in 1914. Since then, it has been raised several times to increase its capacity – 5 feet (1.5 m) in 1917, 10 feet (3.0 m) in 1923, 4 feet (1.2 m) in 1930 and 2 feet (0.61 m) in 1946.