A bill to authorize Federal participation in stream rectification, Trinity River Division, Central Valley Project, California, and for other purposes.

Authorizes the Secretary of the Interior, through the Commissioner of the Bureau of Reclamation, to construct and maintain a sand dredging system on the Trinity River, California, and a debris dam and associated facilities on Grass Valley Creek, California. Requires California to provide matching funds for such sand dredging system. Authorizes appropriations for such construction, operation, and maintenance. Requires the Trinity County, California, Board of Supervisors to adopt adequate standards to protect the Grass Valley Creek watershed.