Volunteer Monitoring for Zebra Mussels
Westward Bound

Origin
Destination
MD
NJ
QB
NY
WI
GA
MI
BC
WA
OR

Trailered Boat Survey
3
5
8
1
1
4
16
1
1
1
1
FL
Even before the Lewis & Clark Bicentennial, boat traffic into the Northwest from points east of the 100th meridian was noteworthy. On just one Web site of boats that needed to be shipped around the country between May 21 and June 21, 2001, we found 21 boats destined for Washington, Oregon, and British Columbia. Five of those boats were coming from Michigan, where zebra mussels infest many water bodies.
Obviously, reservoirs, lakes, rivers, and other water bodies in the West, including those along the Missouri River basin, attract many boaters. This pathway is of particular concern, because many states have no inspection programs in place to determine if travelers are transporting zebra mussels. Only astute observation by an inspector from Washington intercepted a boat from the Great Lakes that entered the state with live zebra mussels aboard several years ago.
Obviously states such as South Dakota, North Dakota, and Nebraska, which are within a day’s drive of zebra-mussel infested waters, are at much greater risk.