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Irrigon Hatchery began operation in 1984 as part of the Lower Snake River Compensation Program (LSRCP)—a program to mitigate for spring Chinook and summer steelhead losses caused by the four federal dams constructed on the lower Snake River. This facility serves as an egg incubation and rearing facility for summer steelhead destined for the Grande Ronde and Imnaha river systems and egg incubation for 575,000 Umatilla coho eggs for transfer to Cascade Hatchery. Irrigon Hatchery also rears 1.4 million fall Chinook for the Grande Ronde and Snake Rivers and is used as a rearing site for legal-sized and trophy rainbow…
Round Butte Hatchery was constructed in 1972 to mitigate for the fishery losses caused by Pelton/Round Butte (PRB) Hydroelectric Complex. Round Butte and its satellite, Pelton Ladder, are used for adult collection, egg incubation and rearing of spring Chinook, summer steelhead, and sockeye salmon.
Bonneville Hatchery was constructed in 1909. In 1957, the facility was remodeled and expanded as part of the Columbia River Fisheries Development Program (Mitchell Act)—a program to enhance declining fish runs in the Columbia River Basin. The hatchery underwent another renovation in 1974 as part of the U.S. Army Corps of Engineers' (USACE) mitigation of fish losses from the construction of the John Day Dam. In 1998, construction was completed on the Captive Broodstock Facility for the Grande Ronde Basin spring Chinook supplementation program.