Zebra mussels confirmed in Barrett Lake in Grant County

The Minnesota Department of Natural Resources has confirmed reports of zebra mussels in Barrett Lake in Grant County. 

A lake service provider business contacted the DNR after finding multiple zebra mussels on three separate pieces of equipment in three locations. A second report came from an angler near the dam by the public access, who snagged a log with zebra mussels attached.

DNR staff found zebra mussels ranging in size from 3 mm to 1 cm on equipment and rocks in the water.

Whether or not a lake is listed as infested, Minnesota law requires boaters and anglers to:

  • Clean watercraft and trailers of aquatic plants and prohibited invasive species,
  • Drain all water by removing drain plugs and keeping them out during transport, and
  • Dispose of unwanted bait in the trash.

Some invasive species are small and difficult to see at the access. To remove or kill them, take one or more of the following precautions before moving to another waterbody:

  • Spray with high-pressure water.
  • Rinse with very hot water (120 degrees for at least two minutes or 140 degrees for at least 10 seconds).
  • Dry for at least five days.

Zebra mussels can compete with native species for food and habitat, cut the feet of swimmers, reduce the performance of boat motors, and cause expensive damage to water intake pipes.

People should contact an area DNR aquatic invasive species specialist if they think they have found zebra mussels or any other invasive species.

More information is available at mndnr.gov/ais.