Large volumes of clean gravels were placed at key sites within 4 miles of anadromous salmonid habitat on the Tuolumne River between La Grange Dam and Old Basso Bridge to improve chinook salmon spawning habitat. The gravel would mobilize, deposit as bars and spawning habitat, and redeposit over time. All the gravel placed during the project would be moved downstream by the flow of the Tuolumne River, mimicking the natural process of course sediment transport. © USFWS