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Lake Name:

a lake.
Contact information
For information on Lakes in Wisconsin, contact:
Wisconsin DNR Lakes
Division of Water
Bureau of Water Quality
Critical Habitat Areas Contacts

Critical Habitat Areas

Assuring Public Rights in Waters of the State

Aquatic plants near shore
Our state Constitution guarantees that the waters of Wisconsin are held in trust for all of the state's citizens. All Wisconsin citizens have the right to boat, fish, hunt, ice skate, and swim on navigable waters, as well as enjoy the natural scenic beauty of navigable waters, and enjoy the quality and quantity of water that supports those uses.

Wisconsin has developed broad regulations related to structures in and alterations to our public waters. These regulations have been developed to make sure that we comply with our state Constitution, statutes and relevant legal case law. In 2004 the Legislature restructured the State's water regulations. These simplified regulations allowed:

  • Exemptions - activities that do not need permits
  • General Permits - establishes standards and minimizes Department review
  • Individual Permits - complex projects that require more detail review

Critical Habitat Designation - The Program

Every waterbody has critical habitat - those areas that are most important to the overall health of the aquatic plants and animals. Remarkably, eighty percent of the plants and animals on the state's endangered and threatened species list spend all or part of their life cycle within the near shore zone. As many as ninety percent of the living things in lakes and rivers are found along the shallow margins and shores. Wisconsin law mandates special protections for these critical habitats. Critical Habitat Designation is a program that recognizes those areas and maps them so that everyone knows which areas are most vulnerable to impacts from human activity. A critical habitat designation assists waterfront owners by identifying these areas up front, so they can design their waterfront projects to protect habitat and ensure the long-term health of the lake they where they live.

Areas are designated as Critical Habitat if they have Public Rights Features, Sensitive areas or both. Public rights features (defined in NR 1.06, Wis. Adm. Code) include the following:

  1. Fish and wildlife habitat;
  2. Physical features of lakes and streams that ensure protection of water quality;
  3. Reaches of bank, shore or bed that are predominantly natural in appearance;
  4. Navigation thoroughfares;

Critical Habitat Designation - The Process

Selection of waters for Critical Habitat Designation is generally done as part of the Department's biennial work planning process. This selection contemplates three basic factors:

  1. quality of the resource;
  2. amount of knowledge and information the Department holds regarding the water body; and
  3. current and future risks of the resource to riparian development and in-lake activities.

After a lake is selected, DNR field staff, compile and review the most current scientific data about the water body. Data is also solicited from local units of government, conservation organizations, federal agencies, local businesses and anyone who may have resource knowledge and information. This information is used to assemble maps to identify targets of focus related to fish, wildlife, endangered resources, and their habitats.

Next, DNR staff conduct field work and surveys to identify public rights features on the lake and delineate their extent. The resulting maps and supporting data are compiled into a draft Critical Habitat Designation report, which is posted on the Department's website for public review. DNR must also give notice of the draft report to the local media, the county clerk, and legislators. If requested or if concerns are anticipated, DNR typically holds informational meetings to answer questions and receive comments. Once public comment is received and the report is complete, Critical Habitat Designations are posted on the DNR website.

How does this program affect Waterfront Owners?

Critical Habitat Designations provide advance information to waterfront owners, to clarify the regulations that will apply when they want to do a construction project or activity along their shoreline. If a project is proposed in a designated Critical Habitat area, the permit jurisdiction or the permit process may change. This allows DNR to ensure that proposed projects will not harm these sensitive resources.