Owens River Gorge
The
Owens River Gorge
is a steep 10 mi (16 km) canyon on the upper
Owens River
in eastern
California
in the
United States
. The canyon is located at the eastern edge of the
Sierra Nevada
mountains in southern
Mono County
, along the strech of the river where it exits the Long Valley near its source and enters the north end of
Owens Valley
. The gorge is a popular destination for
rock climbing
. The Owens River Gorge was formed when the Owens River cut through the
Bishop Tuff
: a layer of welded ash formed from the eruption of the
Long Valley Caldera
. This erosion exposed the tuff layers, including rare columnar
rhyolite
formations. The
Los Angeles Department of Water and Power
constructed the
Long Valley Dam
at the head of the Owens River Gorge as part of a
hydropower
project in
1941
, and completely dewatered the 16-km Lower Gorge reach from
1953
to
1991
. Beginning in
1991
, a limited range of flows has been released to rewater the reach, recreate
riparian
habitat, and reestablish a
brown trout
sport fishery while maintaining hydropower diversions.
External links
Owens River Gorge: Climbing Guide
Measurement of pre-dam Gorge flows
(public domain source)
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