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The original item was published from 6/16/2022 7:33:20 AM to 6/26/2022 12:00:10 AM.

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Posted on: June 16, 2022

[ARCHIVED] Mn DNR has detected zebra mussels in Spring Lake

The DNR confirmed a report of an adult zebra mussel found by Blue Water Science while conducting a curly-leaf pondweed survey in Spring Lake. Spring Lake is connected to Prior Lake, where zebra mussels were confirmed in 2009. The DNR is in contact with the Prior Lake-Spring Lake Watershed District about follow up surveys to determine the distribution of zebra mussels in the lake.

Whether or not a lake has any invasive species, 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 boats or equipment 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.  Five lakes in Scott County have now been confirmed to have a zebra mussel infestation.  Pike Lake was discovered in 2021, Jeffers Pond in early 2022 and now Spring Lake.  Upper and Lower Prior Lakes have had zebra mussels since 2009. 

Scott County does have an Aquatic Invasive Species Prevention program hiring vendors to perform watercraft inspections throughout the summer on multiple lakes, education and outreach and early detection activities.  We need the public’s help in stopping the spread of harmful invasive species to our lakes.

People should contact a Minnesota DNR aquatic invasive species specialist ( if they think they have found zebra mussels or any other invasive species.

More information is available on the Aquatic Invasive Species page of the DNR website at

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