alberta alfalfa arctic ocean arrow lakes astor expedition athabasca river atlantic ocean bald eagle banks lake barlow road bateman island beacon rock state park bean becquerel beet big bend country big bend gold rush blaeberry river boldt decision bonneville dam bonneville power administration braided river british columbia bruce babbitt bruno de heceta bull run hydroelectric project bull trout california canada canadian rockies canal cascade range cascades rapids celilo canal celilo falls chief joseph chief joseph dam chinook salmon chinookan chinookan languages clarence dill clatsop coho salmon cold war colorado river columbia bar columbia basin columbia basin project columbia country columbia district columbia lake columbia mountains columbia rediviva columbia river basalt group columbia river gorge columbia river maritime museum columbia river plateau columbia river treaty columbia valley columbia wetlands colville indian reservation condit hydroelectric project confederated tribes of warm springs confluence project continental climate coulee cowlitz river curie dalles des morts drainage basin dredging duncan river eastern washington economic development electricity empire builder endangered species act endemism endorheic basin environmental impacts of dams environmental remediation eocene estuary federal columbia river power system federal power commission federally recognized tribes first nations fish ladder flathead river flood basalt fort clatsop fort vancouver fraser river fur trade geographic names information system geographic coordinate system geology of the pacific northwest george vancouver glacial lake missoula glacier google google book search grand coulee grand coulee dam grand teton national park grape gray wolf gray sails the columbia river great basin great plains great salt lake grizzly bear gulf of california gulf of mexico hanford reach hanford site harney basin hells canyon historic columbia river highway history of british columbia history of oregon history of washington history of the west coast of north america hudson bay humboldt river hydroelectricity ice age idaho idaho power company illecillewaet river incomappleux river international boundary waters treaty irrigation island press isotope jetty john day dam john day river john jacob astor john mcloughlin john meares julius meier kah-nee-ta high desert resort and casino kennewick man kettle falls kicking horse river kilometre kinbasket lake kingdom of great britain klamath river kootenay lake kootenay national park kootenay river lake lewis lake winnipeg land bridge laurentian divide lewis and clark expedition lieutenant list of hudson bay rivers list of cities on the columbia river list of crossings of the columbia river list of ecoregions in oregon list of tributaries of the columbia river loess manhattan project marmes rockshelter mentha meriwether lewis metre milltown dam miocene mississippi river missoula floods missouri river montana mount hood mount rainier mount rainier national park mount revelstoke national park multnomah falls national weather service native americans in the united states navigability nelson river nevada new deal nez perce north america north cascades national park north west company northern oregon coast range northwest forest plan northwest passage northwestern united states nuclear power nuclear weapon okanagan okanagan trail okanagan people okanogan river oklahoma oncorhynchus orchard oregon oregon country oregon public broadcasting oregon railroad and navigation company oregon republican party oregon territory oregon trail oregon treaty oregon boundary dispute pacific fur company pacific northwest pacific ocean palouse river pend oreille river pit river plains indians plate tectonics pleistocene plutonium polychlorinated biphenyl portland tribune potato priest rapids priest rapids dam public utility district puget sound reclamation reservoir river river delta rocky mountain trench rocky mountains royal navy russia salmon sanpoil river saskatchewan river sea level second secwepemc selkirk mountains server farm shaver transportation company shipwrecks of the inland columbia river shoshone shoshone falls shrub-steppe sinixt slave river snake river spain spillimacheen river spokane river steamboats of the arrow lakes steamboats of the columbia river steamboats of the willamette river steamboats of the upper columbia and kootenay rivers strait of juan de fuca sump superfund the dalles dam the gorge amphitheatre theodore roosevelt thuja plicata tide tributary triple divide peak tsuga heterophylla united states united states army corps of engineers united states bureau of reclamation united states congress united states department of energy united states department of health and human services united states environmental protection agency united states geological survey united states secretary of the interior utah vincent colyer wallula gap washington washington department of ecology washington territory wenatchee river western united states western world white salmon river white sturgeon wikimedia commons willamette river william robert broughton wind river range wine woody guthrie world war ii world wide fund for nature wyoming yakama yakima river yellowstone national park yoho national park