Powerhouse Riffles Restoration Project

The Powerhouse Riffles Restoration Project aims to restore a 2,500-foot segment of the mainstem Tuolumne River’s designated floodway by constructing 4.8 acres of low-gradient riffle complexes and gravel bars using 25,452 cubic yards of clean spawning gravel harvested from within the floodway itself. To enhance aquatic habitat, the project will install 80 large habitat boulders and 49 large wood logs with attached rootwads, all securely anchored into the riverbanks to stabilize the channel and provide critical refuge for fish and other aquatic species. All in-channel work, including earthwork and installation of encroachment structures, is restricted to the low-flow season between June 15 and October 31 to minimize ecological disruption, with temporary gravel access routes carefully designed to avoid sensitive riparian and aquatic zones. The project is managed by the Central Valley Flood Protection Board under the state of California, with work centered near Turlock. No solicitation has been issued yet, as the notice is currently a forecast dated July 2, 2026, indicating upcoming procurement activity. The primary point of contact is Jordan Robbins, Senior Environmental Scientist, who can be reached via email or phone, with Michael Cook, Director of Water Resources and Regulatory Affairs, also available for coordination. Further details and official updates can be accessed through the provided public project link.