The California Department of Fish and Wildlife’s (Department) Crystal Lake Hatchery (Hatchery), in coordination with the Department’s Yreka Screen Shop, and in compliance with activities described by the United States Fish and Wildlife Service’s (USFWS) Intra-Service Biological Opinion on the Rock Creek Meadow Restoration Project, in Shasta County and Safe Harbor Agreement between Pacific Gas and Electric Company, California Department of Fish and Wildlife, and the U.S. Fish and Wildlife Service for Shasta Crayfish Located on Rock Creek, Shasta County will repair the Hatchery water intake structure located on Rock Creek.
The Hatchery water intake structure was relocated in 2015 as part of a larger effort to reintroduce Shasta crayfish (Pacifastacus fortis) to Rock Creek. That intake structure has shown increased seepage in and around the structure with the rate of seepage increasing with time. Department staff will use hand tools and manual labor to dewater the two areas needing repair and will then pour a small concrete cap over the leaks. Concrete will be mixed on site using a small portable mixer.