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|align=right| 1,010 | |align=right| 1,010 | ||
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|] (Kootenai) | |] (Kootenai) |
Revision as of 08:53, 10 September 2008
Major tributaries
Main article: Tributaries of the Columbia RiverThe Columbia receives a number of tributaries. The four largest, each of which discharges well over 10,000 cubic feet per second (280 m/s), are the Snake River (mostly in Idaho), the Willamette River (in northwest Oregon), the Kootenay River (mostly in British Columbia), and the Pend Oreille River (mostly in northern Washington and Idaho, also known as the lower part of the Clark Fork).
Tributary | Average discharge: |
Drainage basin (sq. mi.) |
Drainage basin (sq. km.) | |
---|---|---|---|---|
cu ft/s | m³/s | |||
Snake River | 56,900 | 1,611 | 107,500 | |
Willamette River | 35,660 | 1,010 | 11,460 | 29,700 |
Kootenay River (Kootenai) | 30,650 | 867 | 16,180 | |
Pend Oreille River | 27,820 | 788 | 24,200 | |
Cowlitz River | 9,200 | 261 | 2,480 | |
Spokane River | 6,700 | 190 | 6,680 | |
Deschutes River | 6,000 | 170 | 10,700 | |
Lewis River | 4,800 | 136 | 1,080 | |
Yakima River | 3,540 | 100 | 6,210 | |
Wenatchee River | 3,220 | 91 | 1,350 | |
Okanogan River | 3,050 | 86 | 8,340 | |
Kettle River | 2,930 | 83 | 1,814 | |
Sandy River | 2,260 | 64 | 1,110 |
- Boundary Descriptions and Names of Regions, Subregions, Accounting Units and Cataloging Units, USGS Water Resorces of the United States. Added values of Subregion 1704 -- Upper Snake, Subregion 1705 -- Middle Snake, and Subregion 1706 -- Lower Snake
- http://www.portlandonline.com/bes/index.cfm?c=32749
- Kootenai Subbasin Plan, Northwest Power and Conservation Council
- http://imnh.isu.edu/digitalatlas/geog/fishery/drainage/drain2.htm
- http://vulcan.wr.usgs.gov/Volcanoes/MSH/Hydrology/Drainages/Cowlitz/description_cowlitz.html
- ^ "Boundary Descriptions and Names of Regions". US Geographical Survey. Retrieved 2008-09-10.
- ^ "Rivers". Natural Resources Canada. Retrieved 2008-09-10.