The Los Angeles Aqueduct aqueduct was designed and built by the city's water department, at the time named the Bureau of Los Angeles Aqueduct, under the supervision of the department's Chief Engineer William Mulholland. Built between 1908 and 1913 at a cost of $23 million, the LA Aqueduct tapped into the waters of the Owens River and delivered water 233-miles south to Los Angeles. When completed in 1913, the Los Angeles Aqueduct was considered to be a great engineering accomplishment only second to the Panama Canal. A century later, it continues to be a marvel in modern engineering. The LA Aqueduct brought water from the Owens Valley hundreds of miles away to a growing area in need of additional resources to sustain its people and their endeavors, helping spur an economy that today rivals that of many nations. A century later, this gravity-fed system continues to be a major source of water for Los Angeles — on an average year supplying 29% of the water needs for four million people.
The Second Los Angeles Aqueduct Cascades at Sylmar
The system delivers water from the Owens River in the Eastern Sierra Nevada Mountains to LA
1913 - Constructed
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1913 - Constructed - Images
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1912
Tunnel construction nearing completion in 1912
Clauses in the city's charter originally stated that the city could not sell or provide surplus water to any area outside the city, forcing adjacent communities to annex themselves into Los Angeles
1909
View showing Whitney siphon for the L.A. Aqueduct under construction
1913 - Constructed - Drawings and documents
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1926
Headline from 1926 announcing the LA Aqueduct
Map of the Aqueduct, showing its origins near Mono Lake and culmination in LA city
1905 - Commissioned
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1905 - Commissioned - Images
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1908
A construction crew drilling in the Elizabeth Tunnel
1910
Forms for cement lining are being put in place at an open channel section of the LA Aqueduct
1908
Workers preparing tunnel for cement lining
1908
Workers pose in front of the Elizabeth Tunnel at Johnsville, California
1906
William Mulholland along with two others, sitting in a car in the Owens Valley. All three are looking toward the snow covered Eastern Sierras, water source of the yet to be built L.A. Aqueduct
1912
A 52-mule team hauling sections of aqueduct pipe to the Jawbone Siphon
1908
Workers begin the process of cement lining the open channel portion of the LA Aqueduct