- Spokane River
The Spokane River is a tributary of the
Columbia River, approximately 100 mi (161 km) long, in northern Idahoand eastern Washingtonin the United States. It drains a low mountainous area east of the Columbia, passing through the city of Spokane, which shares its name with the river. Heavily used for irrigationand drinking water, its watershed comprises a region of extensive farming and timber production. The lowered water levels in the river have resulted in an ongoing pollution crisis and a political struggle over its resolution.
The Spokane River's entire
drainage basinis about convert|6240|sqmi|km2 large, of which convert|3840|sqmi|km2 are above Post Falls Dam at the outlet of Coeur d'Alene Lake. [ [http://www.nwcouncil.org/fw/subbasinplanning/admin/level2/intermtn/plan/spokane.pdf Spokane Subbasin Plan] , Northwest Power and Conservation Council; and [http://www.nwcouncil.org/fw/subbasinplanning/admin/level2/intermtn/plan/cda.pdf Intermountain Subbasin Plan, Coeur d'Alene] , Northwest Power and Conservation Council] Its mean annual discharge is convert|7946|cuft/s|sigfig=3. [cite book |last= Benke |first= Arthur C. |coauthors= Colbert E. Cushing |title= Rivers of North America |year= 2005 |publisher= Academic Press |isbn= 9780120882533 |pages= p. 650 online at [http://books.google.com/books?id=-bLMR552QBMC Rivers of North America] , Google Books]
The Spokane River rises out of
Lake Coeur d'Alenein the Idaho Panhandle, draining from the northwest corner of the lake near the city of Coeur d'Alene. It flows west approximately 25 mi (40 km) into east central Washington to Spokane, where it receives the Hangman Riverfrom the south.
From Spokane it flows northwest, receiving the
Little Spokane Riverfrom the east approximately 10 mi northwest of the city. It flows in a zigzag course along the southern edge of the Selkirk Mountains, forming the southern boundary of the Spokane Indian Reservation, where it is impounded by the Little Falls Dam, and to form Long Lake, a 15 mi (24 km) reservoir. It joins Franklin D. Roosevelt Lakeon the Columbia from the east at Miles. The site of historic Fort Spokaneis located at the mouth of the river on the Columbia.
Crisis on the river
Much of the river's water, particularly during the summer, comes from underground springs fed by the
Spokane-Rathdrum Aquifer. The aquifer provides drinking water for 400,000 people in the Spokane area, as well as extensive irrigation water along its course. The use of the aquifer water is so extensive that Spokane Falls, the signature natural feature of the city of Spokane, runs dry during many summers, with all the water being diverted to the Upper Falls and Lower Falls hydroelectric power plants. The lowered water levels have raised the toxicity of the stream, resulting in low concentrations of dissolved oxygenand algaeblooms along much of the river's lower course.
In 2002 the Environmental Protection Agency issued a
Superfundcleanup plan for the Spokane River-Lake Coeur d'Alene basin. In a controversial move, the Bush administration transferred control of the Idaho portion to the state of Idaho, which opposes the Superfund designation and the cleanup, partly based on its high cost and possible effect on real estateprices.
The Spokane River supports populations of
rainbow trout, northern pikeminnow, and bridgelip suckers (see Catostomidae), as well as several non-native species. It supported several species of salmonuntil the construction of Long Lake Damin 1915 by Washington Water Powerblocked upstream passage. [John Fahey, "Power Plays: The Enigma of Little Falls," "Pacific Northwest Quarterly" 82, no.4 (October 1991), 122-131.]
List of Idaho rivers
List of Washington rivers
Spokane River Centennial Trail
* [http://www.spokanenightscenes.com/presentation2.html Spokane River at night]
* [http://wa.water.usgs.gov/realtime/htmls/spokane.html USGS: Spokane River Basin]
* [http://www.waterplanet.ws/endangeredriver/ Spokane River: 6th Most Endangered River of 2004]
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