Potholes Reservoir

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Potholes Reservoir
Aerial view of Moses Lake & Potholes Reservoir, Washington 01A.jpg
Aerial view from the north (2009). Moses Lake is at lower left and the Potholes Reservoir at center.
Location Grant County, Washington,
United States
Coordinates 46°58′57″N 119°17′28″W / 46.98250°N 119.29111°W / 46.98250; -119.29111Coordinates: 46°58′57″N 119°17′28″W / 46.98250°N 119.29111°W / 46.98250; -119.29111[1]
Lake type reservoir
Basin countries United States
Surface elevation 1,043 feet (318 m)[1]
References [1]

The Potholes Reservoir is part of the Columbia Basin Irrigation Project. It is formed by the O'Sullivan Dam and located in central Washington, in the United States. The reservoir is fed by water from Moses Lake, part of the Crab Creek basin.

The area features several lakes (typically 30-70 yards wide and 10–30 feet deep). These lakes, known as "potholes" were created through both natural and man made processes. The potholes were initially carved out during the Pleistocene by flood waters originating from Glacial Lake Missoula.[2] Subsequent damming of the area by the Columbia Basin Project raised the water table high enough to allow these topographical depressions to become lakes.

Also known as:[1]

  • Moses Lake
  • O'Sullivan Reservoir
  • The Potholes Reservoir
  • Mardon

Recreation[edit]

On the shore of the reservoir is Potholes State Park, a 640-acre (2.6 km2) member of the Washington State Park System. It has 6,000 feet (1,800 m) of shoreline on the reservoir.[3]

Cited references[edit]

  1. ^ a b c d "Potholes Reservoir". Geographic Names Information System, U.S. Geological Survey. Retrieved 2009-05-03. 
  2. ^ Alt, David; Hundman, Donald W. (1995). Northwest Exposures: A Geologic History of the Northwest. Missoula, Mont.: Mountain Press. ISBN 0-87842-323-0. OL 800810M. 
  3. ^ "Potholes State Park". Washington State Parks. Retrieved 2009-05-27.