Bonneville Lock and Dam, built along the Columbia River near Cascade Locks, Oregon, during the Great Depression as part of President Franklin D. Roosevelt’s New Deal, continues to serve the Pacific Northwest nearly 90 years after opening in 1938. The hydroelectric facility generates enough power for roughly 900,000 homes while supporting fish passage through its ladders and preserving historic buildings and artifacts. Engineers highlight hydropower’s renewable advantage over finite fuel sources, and the Army Corps of Engineers continues to track fish passage data collected since the dam first began operating.