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Group Description

The Los Angeles Aqueduct was originally constructed to divert water from the Owens River and send it 200 miles south to the City of Los Angeles.

Completed in 1913 the aqueduct sent approximately 200,000 AF of Eastern Sierra water per year from its starting point 12 miles north of the town of Independence to the familiar 'Cascade' in the San Fernando Valley.

With a capacity 485 cubic feet per second (352,000 AF) the aqueduct was not fully utilized so the Mono Extention was added in 1941 to divert water from Mono Lakes feeder streams to the Owens River just north of Bishop.

At the time, Los Angeles had rights to about 700,000 AF of water per year which would have exceeded the capacity of the aqueduct. So another parallel barrel' known as LAA #2 was built and completed in the 1970 to provide an additional capacity of 290 CFS. This second aqueduct, begins at the North Haiwee Reservoir and roughly parallels the first.

In it's entirety, the LA aqueduct system is an engineering marvel of tunnels, ditches, concrete conduits, pipes, lakes, dams, dykes, power stations, siphons, flumes, that collects and delivers water all the way from Mono Lake to the City of Los Angeles without the need for pumps.

This group welcomes the discussion of the LA Aqueduct system in all areas including aqueduct features, engineering, its economic impact on Los Angeles and the Eastern Sierra/Owens Valley regions, its environmental record and mitigation. If you have current photos of the aqueduct, please share them with us at our Panaromio site at http://www.panoramio.com/group/42000.

(Photo on the right taken at the Grapevine Division construction site, 1912. From the Joseph Barlow Lippincott Papers, 1882-1942 Collection)

Group Information

  • 7
  • California
  • Jul 20, 2013
  • English

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