The Colville Reservation was one of six Washington reservations split during the 2011 redistricting, including the Yakama, Puyallup, Chehalis, Swinomish and Nisqually Reservations.The Colville Reservation was one of six Washington reservations split during the 2011 redistricting, including the Yakama, Puyallup, Chehalis, Swinomish and Nisqually Reservations.