Salmon River, Idaho: Sunbeam Dam electrified a mine 1910-11, breached 1934 for spawning fish.
The Sunbeam Dam, on the Salmon River, Idaho, was built in 1910 to make electricity for the Sunbeam Mine, which was abandoned in 1911 after bankruptcy. The cliff was breached in 1934 to allow salmon and steelhead to migrate to their spawning beds.