Tribes have assessed many of the damages wrought their fisheries by the Columbia Basin Dams. Rock Island Dam is a case in point. In the two years before the dam was built Indians caught 1000 and 1500 salmon. The dam was completed in 1932. In 1933, Indians recorded catching 267 salmon.
Harvest for the Nez Perce, Shoshone Bannock, Yakama, Umatilla, and Warm Spring from pre-contact to the present.