Thomson Reservoir (Oregon)

Thomson Reservoir,[1] also known as Thomson Valley Reservoir,[2] is an irrigation reservoir on the upper East Fork of Silver Creek in the Fremont National Forest, approximately ten miles upstream from Silver Lake, Oregon, in the United States. Constructed in 1930 alongside a dam by the Silver Lake Irrigation District, Thomson Reservoir spans roughly 1800 acres and can hold 7750 acre-feet of water.

Thomson Reservoir
Thomson Reservoir
Location of Thompson Reservoir in Oregon
Thomson Reservoir
Thomson Reservoir (the United States)
Coordinates42°57′52″N 121°05′16″W[1]
Primary inflowsintermittent streams
Primary outflowsSilver Creek
Basin countriesUnited States
Surface area2,159.2 acres (10 km2)[2]
Water volume7,750 acre⋅ft (9,560,000 m3)[2]
Shore length126.7 mi (40 km)[2]
Surface elevation4,953 ft (1,510 m)[1]
1 Shore length is not a well-defined measure.

Biology

Thompson Reservoir is classified as mesotrophic. There are low densities of A. formosa in the spring and low densities of C. hirundinella and M. granulata in summer. Due to the extreme water fluctuations from reservoir operations, macrophytes are scarce.[3]

Recreation

Thomson Reservoir is accessible by road. It contains two United States Forest Service campgrounds. The reservoir itself is located within the National Forest, but half of the shoreline is held by private owners. The dominant fish species is the tui chub and its high population has resulted in a decline of rainbow trout. As a result, each spring the reservoir is stocked with about 200,000 fingerling trout. Due to the overpopulation of "rough fish", the camping facilities are not heavily used.[2]

See also
  • List of lakes in Oregon

References
  1. (U.S.), Geological Survey; Names, United States Board on Geographic (1990). The National gazetteer of the United States of America: United States concise 1990. Geological Survey professional paper. U.S. G.P.O. p. 21-PA967. Retrieved 2017-07-30.
  2. "Thompson Reservoir". Atlas of Oregon Lakes. Retrieved 2017-07-30.
  3. McHugh, Tom (1972). The time of the buffalo. Lincoln: University of Nebraska Press. ISBN 978-0-8032-8105-9.
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