Throughout this period, native people continued to fish at Celilo, under the provisions of the 1855 Treaties signed with the Yakama Nation,[REF] the Confederated Tribes of Warm Springs,[REF] and the Walla Walla, Umatilla, and Cayuse,[REF] which guaranteed the tribes' ancient "right of taking fish at all usual and accustomed stations."
The Army Corps of Engineers commenced work on The Dalles Dam in 1952 and completed it five years later.