The Department of Water Resources (DWR) is responsible for managing and protecting California’s water. DWR works with other agencies to benefit the state’s people, and to protect, restore and enhance the natural and human environments.
As we enter California’s warmer months, DWR is increasing monitoring for invasive quagga and zebra mussels at 19 locations within the State Water Project (SWP). At each of the sites - starting March and lasting through fall -- staff will collect water samples bi-monthly, primarily at fixed water quality stations. If the destructive mussels are found in the sample results, DWR will isolate the infested area to limit damage by the mussels to SWP infrastructure and water operations. Invasive mussels were first detected in California waters in 2007. To date, they have not been found in SWP waters. For more information about invasive mussels, visit www.dfg.ca.gov.
DWR Photography John Chacon | Spotlight Archive