The Minnesota Department of Natural Resources has confirmed zebra mussels in Adley Lake in Otter Tail County. This is one of several confirmations this fall as docks and boat lifts are being checked for invasive species at the end of the season.
DNR staff found and removed a one-inch adult zebra mussel attached to the wheel of the dock at the public water access on Adley Lake. During a follow-up search, DNR invasive species specialists found and removed a one-half-inch zebra mussel attached to a rock in about three inches of water near the access. They found no zebra mussels during a search of nearby docks and other water-related equipment. The DNR will conduct a more extensive search of Adley Lake early next spring.
Zebra mussels are an invasive (non-native) species that 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.
Less than 2 percent of Minnesota’s 11,842 lakes are listed as infested with zebra mussels. To prevent the spread of zebra mussels and other aquatic invasive species, Minnesota law requires boaters and anglers to:
Clean their watercraft of aquatic plants and prohibited invasive species.
Drain all water by removing drain plugs and keeping them out during transport.
Dispose of unwanted bait in the trash.
Some invasive species are small and difficult to see at the access. To further reduce the risk of spread, take one or more of the following precautions before moving to another waterbody, especially after leaving infested waters:
Spray with high-pressure water.
Rinse with very hot water (120 degrees Fahrenheit for at least two minutes or 140 degrees Fahrenheit for at least 10 seconds).
Dry for at least five days.
More information is available at www.mndnr.gov/AIS.