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- Columbia_Plateau_(ecoregion) abstract "The Columbia Plateau ecoregion is a Level III ecoregion designated by the United States Environmental Protection Agency (EPA) in the U.S. states of Oregon and Washington, with small areas over the Washington state border in Idaho. The ecoregion extends across a wide swath of the Columbia River Basin from The Dalles, Oregon to Lewiston, Idaho to Okanogan, Washington near the Canadian border. It includes nearly 500 miles (800 km) of the Columbia River, as well as the lower reaches of major tributaries such as the Snake and Yakima rivers and the associated drainage basins. It is named for the Columbia River Plateau, a flood basalt plateau formed by the Columbia River Basalt Group during the late Miocene and early Pliocene. The arid sagebrush steppe and grasslands of the region are flanked by moister, predominantly forested, mountainous ecoregions on all sides. The underlying basalt is up to 2 miles (3 km) thick and partially covered by thick loess desposits. Where precipitation amounts are sufficient, the deep loess soils have been extensively cultivated for wheat. Water from the Columbia River is subject to resource allocation debates involving fisheries, navigation, hydropower, recreation, and irrigation, and the Columbia Basin Project has dramatically converted much of the region to agricultural use.The Columbia Plateau ecoregion has been subdivided into at least fourteen Level IV ecoregions, as described below. The EPA has not yet published an Ecoregions of Washington poster similar to the informational posters for Oregon and Idaho, and the Washington information presented here is not as complete as the information about the other two states.".
- Columbia_Plateau_(ecoregion) thumbnail Level_III_ecoregions,_Pacific_Northwest.png?width=300.
- Columbia_Plateau_(ecoregion) wikiPageID "17964681".
- Columbia_Plateau_(ecoregion) wikiPageRevisionID "589084079".
- Columbia_Plateau_(ecoregion) border Blue_Mountains_(ecoregion).
- Columbia_Plateau_(ecoregion) border Eastern_Cascades_Slopes_and_Foothills_(ecoregion).
- Columbia_Plateau_(ecoregion) border Ecology_of_the_North_Cascades.
- Columbia_Plateau_(ecoregion) border Idaho_Batholith_(ecoregion).
- Columbia_Plateau_(ecoregion) border Northern_Rockies_(ecoregion).
- Columbia_Plateau_(ecoregion) country "Canada".
- Columbia_Plateau_(ecoregion) country "United States".
- Columbia_Plateau_(ecoregion) hasPhotoCollection Columbia_Plateau_(ecoregion).
- Columbia_Plateau_(ecoregion) imageCaption "Ice Age floods cut coulees into the basalt of the channeled scablands".
- Columbia_Plateau_(ecoregion) latD "47".
- Columbia_Plateau_(ecoregion) longD "-119".
- Columbia_Plateau_(ecoregion) map "Level III ecoregions, Pacific Northwest.png".
- Columbia_Plateau_(ecoregion) mapCaption "Level III ecoregions of the Pacific Northwest. The Columbia Plateau ecoregion is marked with .".
- Columbia_Plateau_(ecoregion) name "Columbia Plateau ecoregion".
- Columbia_Plateau_(ecoregion) region "US-OR".
- Columbia_Plateau_(ecoregion) scale "2000000".
- Columbia_Plateau_(ecoregion) state British_Columbia.
- Columbia_Plateau_(ecoregion) state Idaho.
- Columbia_Plateau_(ecoregion) state Oregon.
- Columbia_Plateau_(ecoregion) state Washington_(state).
- Columbia_Plateau_(ecoregion) subject Category:Ecoregions_of_the_United_States.
- Columbia_Plateau_(ecoregion) subject Category:Regions_of_Oregon.
- Columbia_Plateau_(ecoregion) subject Category:Temperate_grasslands,_savannas,_and_shrublands_in_the_United_States.
- Columbia_Plateau_(ecoregion) type Location100027167.
- Columbia_Plateau_(ecoregion) type Object100002684.
- Columbia_Plateau_(ecoregion) type PhysicalEntity100001930.
- Columbia_Plateau_(ecoregion) type Region108630039.
- Columbia_Plateau_(ecoregion) type RegionsOfOregon.
- Columbia_Plateau_(ecoregion) type YagoGeoEntity.
- Columbia_Plateau_(ecoregion) type YagoLegalActorGeo.
- Columbia_Plateau_(ecoregion) type YagoPermanentlyLocatedEntity.
- Columbia_Plateau_(ecoregion) comment "The Columbia Plateau ecoregion is a Level III ecoregion designated by the United States Environmental Protection Agency (EPA) in the U.S. states of Oregon and Washington, with small areas over the Washington state border in Idaho. The ecoregion extends across a wide swath of the Columbia River Basin from The Dalles, Oregon to Lewiston, Idaho to Okanogan, Washington near the Canadian border.".
- Columbia_Plateau_(ecoregion) label "Columbia Plateau (ecoregion)".
- Columbia_Plateau_(ecoregion) label "Plateau du Columbia (écorégion)".
- Columbia_Plateau_(ecoregion) sameAs Plateau_du_Columbia_(écorégion).
- Columbia_Plateau_(ecoregion) sameAs m.04yf3xt.
- Columbia_Plateau_(ecoregion) sameAs Q3391942.
- Columbia_Plateau_(ecoregion) sameAs Q3391942.
- Columbia_Plateau_(ecoregion) sameAs Columbia_Plateau_(ecoregion).
- Columbia_Plateau_(ecoregion) wasDerivedFrom Columbia_Plateau_(ecoregion)?oldid=589084079.
- Columbia_Plateau_(ecoregion) depiction Level_III_ecoregions,_Pacific_Northwest.png.
- Columbia_Plateau_(ecoregion) isPrimaryTopicOf Columbia_Plateau_(ecoregion).