EntityQ7881204· pop 8· linked from 54 articlesUmatilla RiverSign in to savetributary of the Columbia River in Umatilla County, Oregon, United StatesConnectionsUnited StatesCountryPacific OceanEntityOregonEntitygeographic coordinate systemEntityInternational Standard Book NumberEntitydrainage basinEntityriver deltaEntityGoogle EarthEntityColumbia RiverEntitytroutEntityriver mouthEntityrainbow troutEntityAstoriaEntityUnited States Geological SurveyEntityPendletonEntityNative Americans in the United StatesEntityLewis and Clark ExpeditionEntityUmatilla CountyEntityunincorporated areaEntityChinook salmonEntityCategoriesRivers of OregonRivers of Umatilla County, OregonTributaries of the Columbia River