Little Goose Dam
From the north side of the Snake River
Little Goose Dam is located in the United States
Little Goose Dam
Location in the United States
Little Goose Dam is located in Washington (state)
Little Goose Dam
Location in Washington
CountryUnited States
LocationColumbia / Whitman counties, Washington
Coordinates46°35′13″N 118°01′41″W / 46.587°N 118.028°W / 46.587; -118.028
Construction beganJune 1963
Opening date1970 (1970)
Operator(s)U.S. Army
Corps of Engineers
Dam and spillways
Type of damConcrete-gravity,
run-of-the-river
Height98 ft (30 m)
Length2,655 ft (809 m)
Elevation at crest643 ft (196 m) AMSL
Spillway typeService, gate-controlled
Reservoir
CreatesLake Bryan
Total capacity516,300 acre⋅ft (0.637 km3)[1]
Surface area10,025 acres (40.57 km2)
Power Station
Turbines6 units x 135–153 MW (181,000–205,000 hp)
Installed capacity932 MW (1,250,000 hp)
Columbia River Basin
Columbia River Basin

Little Goose Lock and Dam is a hydroelectric, concrete, run-of-the-river dam in the northwest United States, on the lower Snake River in southeast Washington. At the dam, the river is the border between Columbia and Whitman counties;[2] it is nine miles (14 km) northeast of Starbuck and 25 miles (40 km) north of Dayton.

Looking east, Little Goose Dam with lock & fish ladder on the right (south side of the river), spillway in the middle of the dam, and the power generation between the spillway and the lock.

Construction began in June 1963 on what was Little Goose Island.[3][4] The main structure and three generators were completed 54 years ago in 1970, with an additional three generators finished in 1978.

Generating capacity is 810 megawatts (1,090,000 hp), with an overload capacity of 932 megawatts (1,250,000 hp); the spillway has eight gates and is 512 feet (156 m) in length.

Little Goose Dam is part of the Columbia River Basin system of dams.

Lake Bryan, named for Doctor Enoch Albert Bryan, is formed behind the dam. The lake stretches to the base of Lower Granite Dam, 37 miles (60 km) upstream. Lake Herbert G. West, formed from Lower Monumental Dam runs 28 miles (45 km) downstream from the base of the dam.

Navigation lock
  • Single-lift
  • 86 feet (26 m) wide
  • 668 feet (204 m) long

See also

References

  1. "The Four Lower Snake River Dams". Bluefish.org. Retrieved July 17, 2010.
  2. "The Columbia River System Inside Story" (PDF). BPA.gov. pp. 14–15. Archived from the original (PDF) on May 27, 2010. Retrieved July 17, 2010.
  3. "Little Goose's handy site will speed dam building". Spokesman-Review. Spokane, Washington. March 2, 1963. p. 6.
  4. "Little Goose Dam moving ahead". Spokesman-Review. Spokane, Washington. (photo). September 3, 1963. p. 6.
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