Similkameen River
The Similkameen River near Keremeos
Location
CountryCanada, United States
StateWashington
ProvinceBritish Columbia
Physical characteristics
Length197 km (122 mi)
Basin size7,600 km2 (2,900 sq mi)[1]

The Similkameen River runs through southern British Columbia, Canada, eventually discharging into the Okanagan River near Oroville, Washington, in the United States.[2][3] Through the Okanagan River, it drains to the Columbia River. The river is said to be named for an indigenous people called Similkameigh, meaning "treacherous waters".[4]

The river is controversially dammed (the now-defunct Enloe Dam), blocking fish passage to the upper (Canadian) reaches of the river.[5][6]

History

The first mention of the Similkameen by a European was by Alexander Ross. While on a trading expedition, he travelled by way of the "Similkameigh River." Sir George Simpson used the name "Similkameigh" for one of the groups part of the Okanagan Nation. The transition from Similkameigh to Similkameen may have been inspired by the name of the Tulameen River despite being etymologically incorrect. The name Similkameigh comes from a now-extinct language of Nicola-Similkameen, of the Athapascan languages, and is believed to mean "Salmon River."[7]

Geography

Course

It starts at Nordheim Peak, on the east flank of Manning Park, about 10.3 km (6.4 mi) north of Allison Pass and flows past the settlements of East Gate, Princeton, Hedley, Keremeos, and Cawston, closely followed by Highway 3, the Crowsnest Highway. About 25 km (16 mi) upstream from Princeton, the river drops over Similkameen Falls. Numerous viewpoints of the river occur from the highway, the most popular being Bromley Rock, where swimming in the river from a spectacular sandy beach is possible. In a typical Okanagan, BC summer, the water is warm and fantastic for swimming. It contributes 75% of the flow of the Okanogan River and crosses the international border at Nighthawk, Washington.

Flow

The United States Geological Survey maintains a stream gauge at river mile 15.8, just upstream from the Oroville–Tonasket Irrigation District canal intake. The river's discharge (flow) at this point averages 2,283 cubic feet per second (64.6 m3/s), with a recorded maximum of 45,800 cu ft/s (1,300 m3/s) and minimum of 65 cu ft/s (1.8 m3/s).[8]

Enloe Dam

The Enloe Dam, completed in 1920, is located just above the river's mouth.[9] The river, after flowing over the dam, drops over what is left of Coyote Falls. Lacking fish ladders, Enloe Dam blocks fish passage and completely extirpated anadromous fish migration into the upper reaches of the Similkameen River and its tributaries in Canada. [10] However, Coyote Falls is 20 feet tall thus making it impossible for salmon (who can only jump 12 feet) to migrate further than that point and would never reach the dam. [11]

International

Cliffs above the Similkameen near Nighthawk, Washington

The Similkameen River subject to international water-sharing agreements governed by the International Joint Commission as part of the Columbia Basin. The authority responsible for overseeing the IJC agreements is the International Osoyoos Lake Board of Control, composed of appointees from Environment Canada, the BC Ministry of Water, Land Air Protection, the US Army Corps of Engineers, the US Geological Survey, and private consultants.[12]

Major tributaries

See also

References

  1. ↑ Okanogan Subbasin Plan, Northwest Power and Conservation Council
  2. ↑ U.S. Geological Survey Geographic Names Information System: Similkameen River
  3. ↑ "Similkameen River". BC Geographical Names.
  4. ↑ Bright, William (2004). Native American placenames of the United States. University of Oklahoma Press. p. 444. ISBN 978-0-8061-3598-4. Retrieved 14 April 2011.
  5. ↑ "Restoring the Similkameen River by Removing Enloe Dam". 14 September 2015.
  6. ↑ "Call to break U.S. Dam so salmon can return to Similkameen River in B.C."
  7. ↑ V., G.P.; Akrigg, Helen B. (1997). British Columbia Place Names (Third ed.). Vancouver: UBC Press. p. 244. ISBN 0-7748-0637-0.
  8. ↑ "Water resources data for the United States, Water Year 2010; gage 12442500, Similkameen River near Nighthawk, WA" (PDF). USGS. Retrieved 14 April 2011.
  9. ↑ "Dam". Archived from the original on 2011-07-25. Retrieved 2011-09-07.
  10. ↑ https://www.columbiana.org/pages/SimilkameenRiver.html
  11. ↑ Similkameen River Wa - Enloe License Summary p-12569.pdf https://www.river-management.org/assets/Hydro/RoundIII/BLM/similkameen%20river%20wa%20-%20enloe%20license%20summary%20p-12569.pdf
  12. ↑ Annual Report to the International Joint Commission from the International Osoyoos Lake Board of Control, 2004

48°53′30″N 119°25′49″W / 48.89167°N 119.43028°W / 48.89167; -119.43028

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