Columbia River drainage basin
Columbia River drainage basin
Drainage basin of the Columbia River in western North America.
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Drainage basin
Land area where water converges to a common outlet.
40%
Columbia River
River in the Pacific Northwest of North America.
31%
Inland Northwest
Region of the United States.
11%
Kootenay River
River in Western Canada and the United States.
3.9%
Columbia Plateau (ecoregion)
Xeric shrubland ecoregion of Canada and the United States.
3.9%
Tri-Cities, Washington
Place in Washington, United States.
3.3%
Willamette River
River in northwest Oregon, US.
3.3%
Readers come from
Share of the 1,197 readers arriving from another article
Columbia River
River in the Pacific Northwest of North America.
31%
Signal crayfish
Species of crustacean.
18%
High Desert (Oregon)
Region of the U.S. state of Oregon.
12%
Missoula floods
Heavy floods of the last ice age.
4.4%
Pygmy rabbit
Species of mammal.
3.1%
Rain shadow
Leeward side of a mountain range.
1.9%
Spokane, Washington
City in Washington State.
1.6%