On Target: The Arrowhead East and West Tunnels

by Jim Gallanes, Principal Engineer; Metropolitan Water District of Southern California, 350 S. Grand Ave., Los Angeles, CA 90071,
Tobin Tellers, Principal Engineer; Metropolitan Water District of Southern California, 350 S. Grand Ave., Los Angeles, CA,
Victor Romero, (M.ASCE), Associate; Jacobs Associates, Los Angeles, CA,


Serial Information: Civil Engineering—ASCE, 1996, Vol. 66, Issue 12, Pg. 50-53


Document Type: Feature article

Abstract: Two new water tunnels in Southern California will feature continuous impermeable linings, extensive probing and grouting, and unique seismic sections to minimize damage in fault zones during earthquakes. The Metropolitan Water District of Southern California is moving into construction of its 43.8 mi (70 km) Inland Feeder. Designed to increase the amount of state-produced water in the mix that Metropolitan provides to 16 million Southern Californians, the $1.2 billion Inland Feeder will move as much as 650 million gal. (2.4 billion L) of water a day from the Devil Canyon Afterbay of the State Water Project in San Bernardino County to the Colorado River Aqueduct and the Eastside Reservoir, currently under construction in Riverside pipeline and 18 mi (29 km) of tunnels. Construction will last approximately eight years.

Subject Headings: Civil engineering landmarks | California | Construction | Seismic design | Tunnels | Water tunnels

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