Fast-spreading aquatic invasive plants and animals can damage marine ecosystems, even driving native species to extinction. Among the many dozens of destructive species that have threatened water resources around the country, three are of special concern:  the aquatic weed Hydrilla, the Zebra mussel, and the Chinese Mitten crab.

They have not yet been found in Columbia River waters, and all boaters are encouraged to help prevent their spread. Before leaving a water body, inspect your boat and remove any plants and animals. At home, clean your boat to kill harmful species. Use high-pressure hot water if possible, or rinse thoroughly with a garden hose. Before launching again, air dry boat and equipment, preferably five days or more. Be extra cautious when boating in other states.

If you find an aquatic nuisance species, report it. In Oregon, contact the Oregon Department of Fish and Wildlife (503) 947-6000 or the Oregon Department of Agriculture Weed Control Division (503) 986-4621. In Washington call Pam Meacham, assistant aquatic invasive species coordinator for WDFW, at (360) 902-2741, or email her at meachpmm@dfw.wa.gov.

Additional information and what you can do to stop the spread of invasive species is available at: www.protectyourwaters.net or www.100thMeridian.org