As part of a continued commitment to restoring and enhancing habitat for native fish, Tuolumne River Partners Modesto Irrigation District (MID), Turlock Irrigation District (TID) and the San Francisco Public Utilities Commission (SFPUC), in partnership with the U.S. Fish and Wildlife Service (USFWS), have begun construction on the Powerhouse Riffles Restoration Project, a mainstem Tuolumne River restoration effort designed to improve spawning and rearing habitat for salmon and other native aquatic species.