This project consisted of sediment removal from the mercury-impaired Combie Reservoir while implementing an innovative sediment recovery and water treatment process. Best-management practices and recommendations developed during the life of this project can be applied and serve as a roadmap to addressing other similarly impacted reservoirs throughout the Sierra Nevada.
NOTE: This is a project led and funded by the Nevada Irrigation District (NID) and the California Department of Water Resources (DWR) Proposition 13 Bay-Delta Multipurpose Water Management Program. The Sierra Fund supports this project for its great potential to be a model for restoring water storage capacity in the Sierra’s existing reservoirs, while remediating mercury left in our watersheds from legacy mining.
“Reservoirs are areas where mercury contaminated sediments can accumulate in the Gold Country, resulting in elevated fish mercury concentrations, lost water storage capacity and impaired water quality. Reservoir facilities present a unique opportunity to address legacy mercury contamination with innovative maintenance activities.”Carrie Monohan, Ph.D., Program Director
Project Funders and Funders
California Department of Water Resources
Nevada Irrigation District
Great Lakes Environmental and Infrastructure