… The California Department of Fish and Wildlife announced last week that golden mussels were discovered in the Sacramento River Deep Water Ship Channel and Washington Lake in West Sacramento. … Because of the potential that golden mussels clog up water infrastructure and affect wildlife, Sacramento County declared a local emergency last month, joining San Joaquin and Kern counties. In a news release announcing the move, officials said it would allow the county to work more closely with regional, state and federal partners to confront the threat. Yolo County spokesperson Will Arnold said the county is considering that option and will be working with West Sacramento and the port to coordinate next steps.

Other invasive species news:

• Tahoe Daily Tribune (South Lake Tahoe, Calif.): Golden mussels found in Sacramento are dangerously close to Lake Tahoe
• California Department of Water Resources: Blog: Detecting the Delta’s inhabitants through their DNA fingerprint