Chief Joseph
Chief Joseph Dam is a conventional hydroelectric plant with generators listed in EIA-860 totaling 1,743.8 MW of nameplate capacity, located in Douglas County, Washington. The dam sits on the Columbia River near Bridgeport and is widely cited as the second-largest hydropower producer in the United States and the largest hydropower facility operated by the U.S. Army Corps of Engineers. It is owned and run by the Corps' Seattle District, with the electricity marketed onto the grid by the Bonneville Power Administration. As a run-of-the-river project, Chief Joseph has no significant storage reservoir and, like the dams immediately upstream and downstream on this stretch of the Columbia, has no fish ladder for migrating salmon. As of 2025 the Corps was carrying out a multi-million-dollar rehabilitation of the plant's 16-unit generator rewinds, air coolers and condition-monitoring systems to keep the aging powerhouse reliable. No whole-plant or partial retirement is scheduled; all listed generating units remain in service.