the waters of the columbia river rush through the spillway gates below the cranes at the mnnary dam in umatilla, oregon, usa

hydroelectric spillway grid generation landmark gorge salmon structure energy reservoir engineering mcnary dam lock park gates cranes renewable columbia river umatilla oregon picnic table boating fishing recreation danger architecture construction industry industrial fish ladder electricity electrification concrete historic history facility cliffs palouse pnw pacific northwest outside outdoors united states usa america american