The Diversion was originally constructed in 1917 by the BIA and includes diversion dam structures across the east and west channels of the Yakima River. This facility is the primary point of diversion for the Wapato-Satus Unit of the Wapato Irrigation Project (WIP), diverting up to approximately 2,200 cubic feet per second (cfs) of water into the WIP Main Canal.
Modifications at the Diversion within the last 40 years include: