List of Infested Waters

The DNR lists waters of the state as infested with aquatic invasive species (AIS) if they contain AIS that could spread to other waters. Activities such as water appropriation and bait harvest are regulated in listed infested waters to help prevent the further spread of AIS.

The DNR may also list a lake, river, pond or wetland as infested if it is highly likely to be infested by AIS because it is connected to a water body that contains a population of AIS.

You can download the infested waters list using one of the links below.  Both files contain the following columns:  

  • Water body: The name of the listed water body, if known. Some water bodies are listed as "unnamed" with additional location information to identify this water body.
  • County: The county in which the water body occurs. A lake in more than one county is listed under the county corresponding to its public waters inventory number, but the entire lake is considered infested. Lake Superior and portions of rivers that flow through more than one county are listed as occurring in "Multiple Counties."
  • Species: The AIS with which the water body is listed as infested.
  • DOW number: An identifying number for lakes. DOW stands for the former DNR Division of Waters. Ponds and wetlands that are not on the public waters inventory are listed with "none" in the number column. Most rivers and streams on the public waters inventory are listed without a number in the number column; some river pools are identified with a DOW number.

Infested Waters List (updated March 17, 2015) – Excel spreadsheet
You can download this file and sort by any of the following columns: water body name, county, species, or DOW number.

Infested Waters List (updated March 17, 2015) – PDF
You can download and print this document as it is formatted; this table is sorted by water body in alphabetical order.