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John Day Dam Location: Rufus, Oregon Columbia River mile: 215.6 Operator: U.S. Army Corps of Engineers Type: Run of river dam and reservoir Completed: 1971 (16 turbine units) Generating capacity: 2,1609 megawatts Juvenile fish passage facilities: Screens on all turbines with bypass system to tailwater Adult fish passage facilities: Two fish ladders with fish counting stations Additional notes: Between 1985 and 1987, the Corps installed screens in all powerhouse units More info about this dam (off-site link)