The Confederated Tribes of the Colville Reservation is a Sovereign Nation and Federally-recognized American Indian Tribe. While each destination is unique in its offerings, all three casinos in Washington share a common commitment to delivering outstanding guest experiences, unique gaming opportunities, unparalleled customer service and individual player recognition. As casino operators, we believe in striving for respect, integrity, and excellence in everything we do. All three Washington State casinos are owned and operated by the Confederated Tribes of the Colville Reservation. The 12 Tribes Colville Casinos include 12 Tribes Omak Casino Hotel in Omak, 12 Tribes Lake Chelan Casino, the Amphitheater in Manson, and 12 Tribes Coulee Dam Casino in Coulee Dam.