Lewiston Dam (California)

Lewiston Dam
Official nameLewiston Dam[1]
LocationTrinity County, California, United States[1]
Coordinates40°43′30″N 122°47′46″W / 40.72500°N 122.79611°W / 40.72500; -122.79611
Opening date1963; 61 years ago (1963)[1]
Operator(s)US Bureau of Reclamation [2]
Dam and spillways
ImpoundsTrinity River[1]
Height91 ft (28 m)[2]
Length745 ft (227 m)[2]
Reservoir
CreatesLewiston Lake
Total capacity14,660 acre-feet (18,080 dam3)[1]
Catchment area718 sq mi (1,860 km2)[2]
Surface area759 acres (307 ha)[1]
Power Station
Installed capacity350 KW
Annual generation3,335,000 KWh

Lewiston Dam is an earthfill dam on the Trinity River that forms Lewiston Lake near Weaverville, California, United States.[2] The 91 ft (28 m) high earthfill dam is 7 mi (11 km) downstream of Trinity Dam and was built by the U.S. Bureau of Reclamation.[2] Construction was completed in 1963.[1] Lewiston Lake and Dam are part of the Central Valley Project, which harnesses the waters from the Sacramento River and San Joaquin River watersheds to irrigate the Central Valley, and provide hydroelectricity.[2]

  1. ^ a b c d e f g NPDP site Archived 2011-07-16 at the Wayback Machine accessed 2008-01-10
  2. ^ a b c d e f g BoR site accessed 2008-01-10