The Columbia River plateau includes the US of Washington Oregon and Idaho which group Native Americans can be found there?

* Cayuse

* Chelan

* Coeur d'Alene

* Columbia

* Colville

* Kalispel

* Kittitas

* Klickitat

* Lakes

* Methow

* Nez Perce

* Okanogan

* Palouse

* San Poil

* Sinkaietk

* Spokane

* Umatilla

* Walla Walla

* Wanapum

* Wenatchi

* Wishram

* Yakima