McCormack-Williamson Tract Levee Modification and Habitat Restoration Project – Phase B, SEIR Addendum No. 1

The California Department of Fish and Wildlife has approved a major amendment to Lake and Streambed Alteration Agreement EPIMS-SAC-45649-R3 for the McCormack-Williamson Tract Levee Modification and Habitat Restoration Project Phase B. This regulatory action, approved on August 5, 2025, and posted on August 6, 2025, is managed by the lead agency, Reclamation District 2110, and the responsible agency, the California Department of Fish and Wildlife. The project is located in Sacramento County, California, specifically within the boundaries of the Mokelumne River, Snodgrass Slough, Lost Slough, and Dead Horse Cut. The primary objective of this amendment is to update and clarify avoidance and minimization measures to further protect the threatened giant garter snake. The project is governed by Fish and Game Code section 1602 and adheres to California Environmental Quality Act guidelines under California Code of Regulations Title 14. A Notice of Determination has confirmed that the project will not have a significant environmental effect within the jurisdiction of the California Department of Fish and Wildlife. Key personnel overseeing the project include Chad Fien of Reclamation District 2110 and Christina Autry, an Environmental Scientist with the California Department of Fish and Wildlife.