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Wisconsin Pier Regulations

The Wisconsin Department of Natural Resources understands that piers are a popular focus for boating and waterfront recreation. What pier owners need to know is that they can continue to place their existing piers on the water, the same as they’ve been doing for years.

  • The majority of existing piers already meet size limits and will not need a permit or state review.
  • Most larger existing piers can be grandfathered in under a free registration process that must be completed by
  • April 1, 2012.

  • Piers first put in the water before February 2004 that cannot be grandfathered will need to be downsized or apply for a FREE individual permit with state review.

  • Piers first put in the water after February 2004 must meet the size limits outlined in the Pier Planner or their owners may seek an individual permit with a state review. See the Planner pdf document available below.
  • Registration is currently available by printing, filling out, and mailing or faxing a completed hard copy of the paper form which is also available below.

    The WDNR also has an interactive decision tool to help you determine if you will need to register your pier, get a permit or simply do nothing.


    Why Regulate Piers?


    About Designated Waters

    A Designated Water is a waterbody that has special designations that affect permit requirements. Designated Waters include the following:

    Please note that Areas of Special Natural Resource Interest (ASNRI) waters and Public Rights Features (PRF) waters are also considered Priority Navigable Waters (PNW).

    To find out if your lake or stream is designated as an "Area of Special Natural Resource Interest" (ASNRI) and identify what you need to do regarding pier registration, visit this helpful web site provided by the WDNR:

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    Bobbie Kocim,
    May 30, 2011 8:14 PM