Infested Waters List

An Invasive Species Alert sign near a dock on a lake. The signs says These waters are designated as Infested Waters and contain Zebra Mussels and Eurasian Watermilfoil. Minnesota Department of Natural ResourcesThe DNR will add a lake, river, pond or wetland to the infested waters list if it contains an aquatic invasive species that could spread to other waters. The DNR may also list a lake, river, pond or wetland as infested if it is connected to a body of water where an aquatic invasive species is present.

To reduce the risk of spreading aquatic invasive species, activities like bait harvest and water use are managed differently in infested waters.

Which lakes and rivers are listed as infested?

You can find out if a body of water is infested by:

NEW! Map of Infested Lakes
This map is only for reference, not for regulatory purposes. This map displays only infested lakes, wetlands, and major river pools. For a complete, official list of infested waters that includes all rivers and stream segments, please use the PDF file or Excel spreadsheet.

How many lakes and rivers are listed as infested?

About 5% of Minnesota's more than 11,000 lakes are on the infested waters list. Less than 2% of Minnesota lakes are listed as infested with zebra mussels. As of November 2015, we have confirmed zebra mussels in 112 lakes, rivers and wetlands. We have listed 131 bodies of water as infested with zebra mussels because they are closely connected to a waterway where zebra mussels have been found.

What can I do?

You can help stop the spread of aquatic invasive species. Take three steps every time you leave a lake or river - whether or not it's infested:

  • Clean all aquatic plants, zebra mussels, and other invasive species from boats, trailers, and water-related equipment.
  • Drain water from your boat, ballast tanks, motor, live well and bait container. Remove drain plugs and keep drain plugs out while transporting equipment.
  • Dispose of unwanted bait in the trash. To keep live bait, drain the water and refill the bait container with bottled or tap water.

If you want to harvest bait or transport water from an infested water body, you may need to apply for a permit.


Contact the Invasive Species Prevention Program Coordinator, Kelly Pennington, at 651-259-5131.