La aqueduct Orange city aqueduct

• The answer is the California or also called The Owens Valley aqueduct.

The California Aqueduct is the concrete-lined aqueduct that transports water from Northern California to Southern California. It is the main water transport structure of the California State Water Project and at nearly 450 miles in length, it is the longest water channel in California. The aqueduct was built by the California Department of Water Resources. :)

Most of Los Angeles water came from the Serra Nevada via the Los Angeles Aquedect. The other major aqueducts are the California Aqueduct and the Colorado River Aqueduct.

Construction of the Edmund G. Brown California Aqueduct began in 1960 according to this state website http://www.californiagovernors.ca.gov/h/biography/governor_32.html