SHUYELPE COLVILLE - KETTLE FALLS : Click for OKANOGAN or SINIXT   Colville Territory: Northernmost Columbia valley region in Washington State.   Portals .   Confederated Tribes of Colville Reservation : part of whose membership is Colville Nespelem, Washington #92 Colville Population United States (2010) - 700 S A L I S H INTERIOR OKANOGAN