SCH Number 2021120060

Project Info

Title

Delta Dams Rodent Burrow Remediation Project

Description

The earthen embankment dams at Clifton Court Forebay, Dyer Reservoir, and Patterson Reservoir have been subject to ongoing rodent burrowing throughout their service life. Rodent burrows are a recognized hazard to dams and levees because they can promote piping and internal erosion that can ultimately lead to dam failure. DWR proposes to undertake the Delta Dams Rodent Burrow Remediation Project (Project) to remediate these conditions and implement other maintenance and repair activities for the project facilities to improve the stability and safety of each dam. Specifically, the Project involves collapsing and/or excavating burrows, backfilling the dam surface, and compacting the soil. In some locations, wire and/or rock would be placed to provide permanent armoring to deter future rodent burrowing. Additional maintenance and repair measures include intake channel repair and removal of trees around a sump at Clifton Court Forebay; drainage ditch repair and remediation of erosion along the entrance road at Dyer Reservoir; and outlet drainage channel improvements at Patterson Reservoir.

6 documents in project