Wisconsin Shoreline Permits Explained: Seawalls, Piers and Ramps
A plain-English reference for the rules that apply to shoreline work on Southeast Wisconsin lakes.
The Public Trust and Chapter 30
Wisconsin lakes and streams are held in trust for the public, and work on navigable water is regulated by the Wisconsin Department of Natural Resources under Chapter 30 of the Wisconsin Statutes. That means a shoreline project is not just construction. It is a regulated activity, and the rules apply whether the shoreline is a home or a business.
In practice, that means most work at the waterline, a seawall, a pier, a ramp, riprap, grading, has a state rule that covers it. Some of that work needs an individual permit. Some of it is exempt if it meets certain standards. The standards depend on the property and the lake, so the right answer is not the same on every shoreline.
Piers and NR 326
Piers are covered by Wisconsin Administrative Code NR 326. Many piers that meet the state's standards are exempt from needing an individual permit, but the standards depend on the property and the lake. The size, the number of boats, the location and the configuration all play into whether a pier qualifies for the exemption or needs a permit.
Some lakes and municipalities, including the Geneva Lake communities, have their own pier rules on top of state rules. That means a pier that is fine on one lake may face an extra local requirement on another. We plan the build around what applies on your water.
Seawalls, Riprap and NR 328
Seawalls, riprap and other shore erosion control are covered by NR 328. On inland lakes the DNR generally favors riprap or natural shoreline approaches, and a new vertical seawall usually requires an individual permit. Repairing or replacing an existing wall may follow a different process than building a new one.
This is one reason a site visit matters. The path for your shoreline depends on what is there now, what you want to build, and how your lake is classified. We assess the conditions and plan the work around the right process.
Boat Ramps and Grading
Boat ramps and grading on the bank typically need DNR approval. Ramps on navigable water usually need a DNR permit. Like seawalls and piers, the details depend on the property and the waterbody, and we plan the work around the requirements that apply.
Shoreland Zoning and NR 115
Shoreland zoning is a separate layer from the DNR waterway rules. It covers setbacks, vegetation and impervious surfaces on the land side of the shoreline, and it is handled by the county under NR 115, or by the city or village for incorporated areas.
Walworth, Kenosha, Racine and Waukesha counties each run their own shoreland zoning office. That means a shoreline project in Southeast Wisconsin lake country can touch both a state waterway rule and a county shoreland zoning rule, and both have to be satisfied.
Rules Change. Every Shoreline Is Different.
Rules change and every shoreline is different. Before any work starts, confirm the requirements for your property with the Wisconsin DNR and your local zoning office. We're happy to talk through what we see on your shoreline.
Where This Applies
These rules apply to the work we build:
Frequently Asked Questions
Do I need a permit to replace my seawall in Wisconsin?
Seawalls, riprap and other shore erosion control are covered by NR 328. On inland lakes the DNR generally favors riprap or natural shoreline approaches, and a new vertical seawall usually requires an individual permit. Repairing or replacing an existing wall may follow a different process. Confirm the requirements for your property with the Wisconsin DNR.
Does my pier need a permit?
Piers are covered by NR 326. Many piers that meet the state's standards are exempt from needing an individual permit, but the standards depend on the property and the lake. Some lakes and municipalities, including the Geneva Lake communities, have their own pier rules on top of state rules.
Does a boat ramp need a permit?
Boat ramps and grading on the bank typically need DNR approval. Ramps on navigable water usually need a DNR permit. Confirm the requirements for your property with the Wisconsin DNR.
What is shoreland zoning and is it separate from DNR permits?
Shoreland zoning covers setbacks, vegetation and impervious surfaces. It is a separate layer handled by the county under NR 115, or by the city or village for incorporated areas. Walworth, Kenosha, Racine and Waukesha counties each run their own shoreland zoning office.
Who handles the permit application?
We plan, permit and schedule the work as part of the project. We walk through what to expect so you know what is happening at the shoreline. Rules change and every shoreline is different, so we confirm the requirements for your property with the Wisconsin DNR and your local zoning office.
Ready to Build on the Water?
Call us or send your project details. We serve lakes within 50 miles of Elkhorn.