 Soon more arrived and they eventually became a permanent part of the Warm Springs Reservation.The Confederated Tribes adopted a constitution in 1938, after the construction of Bonneville Dam flooded the major fishing site at Cascades Rapids.Upon receiving a $4 million settlement in compensation for the 1957 flooding of Celilo Falls by the construction of The Dalles Dam, the Tribes used part of the sum to build the Kah-Nee-Ta resort, which opened in 1964.