Checkpoint Planned to Help Stop Spread of Chronic Wasting Disease and Quagga and Zebra Mussels

Kyle Chang, CDFW Law Enforcement Division, (951) 897-6193
Kyle Orr, CDFW Communications, (916) 322-8958

California Department of Fish and Wildlife (CDFW) wardens will check vehicles and boats in San Bernardino County to prevent the introduction and spread of Chronic Wasting Disease (CWD) and quagga and zebra mussels. The checkpoint will be conducted at Yermo Border Station on Monday, Oct. 20 and Tuesday, Oct. 21.

CWD is a neurologic disease that is fatal to deer, elk and moose. California hunting regulations specifically prohibit importing brain or spinal cord tissue from deer and elk harvested outside of California to minimize the risk of introducing CWD into the state. Out-of-state big game hunters should review CDFW’s hunting regulations regarding interstate transport of deer and elk before bringing game meat across state lines. CWD has been detected in free-ranging cervids in 19 states and two Canadian provinces.

Quagga and zebra mussels, non-native freshwater mussels native to Eurasia, multiply quickly and encrust watercraft and infrastructure, and compete for food with native fish species. These mussels can be spread from one body of water to another by nearly anything that has been in infested waters by getting entrapped in boat engines, bilges, live-wells and buckets.

Quagga mussels were first detected in the Colorado River system in January 2007 and were later found in San Diego and Riverside counties. They are now known to be in 29 waters in California, all in Southern California. Zebra mussels were discovered in San Justo Reservoir in San Benito County in January 2008.

For more information on CWD, please visit the CDFW website at For more information on quagga and zebra mussels, please visit