Easton Diversion Dam located on the Yakima River near Easton, is a concrete gravity ogee weir, movable crest structure. This dam is 66 feet high and contains 5,800 cubic yards of concrete.
Intensive Federal, State, tribal, and local efforts in conjunction with the Northwest Power Planning Council resulted in Congress authorizing implementation of Phase I of the Yakima River Basin Water Enhancement Project in 1984. The purpose of Phase I is to reduce anadromous fish mortality at outdated fish ladders at diversion dams and inadequate fish screens at diversion canals. Ladders and screens at the largest diversion dams and canals were completed in 1989 and a similar program is underway at the smaller diversions.