The powerplant was constructed in 1956 as part of the Yakima Project.
Congress authorized the Yakima Project, Kennewick Division, on June 12, 1948, under Public Law 629, 80th Congress (62 Stat. 382).
The powerplant provides power to the Bonneville Power Authority grid. The hydropumps provide irrigation via canals to the Kennewick Irrigation District.
The Chandler Powerplant includes two 6.0 megawatt, 4160 volt hydropower generators, and two 2,600 horsepower pumps which operate from a 10.6 mile canal, diverting up to 1,500 cubic feet per second of water from the Prosser Diversion Dam.
The Yakima Project provides irrigation water for a comparatively narrow strip of fertile land that extends for 175 miles on both sides of the Yakima River in south-central Washington. The irrigable lands presently being served total about 465,000 acres.
The Kennewick Division is a combined irrigation and power development. It includes the 12,000-kilowatt Chandler Powerplant and 19,171 acres of irrigable land.
Western Electricity Coordinating Council, Northwest Power Pool Area
PMA Service Area
Bonneville Power Administration
Original Nameplate Capacity
Year of Initial Operation
Chandler Power Canal
Title: Area Office Manager, Columbia-Cascades Area Office Organization: Organization Fax: 509-575-5848 Phone: 509-454-5611
More Information about the U.S. Bureau of Reclamation