Michigan Wetlands Regulations: Permits, Mitigation, and Penalties

If you plan to fill, dredge, build in, or drain a wetland on your Michigan property, you almost certainly need a Michigan wetland permit from the Department of Environment, Great Lakes, and Energy (EGLE) before any work begins. Michigan is one of only two states that runs its own version of the federal Clean Water Act Section 404 program, so a single EGLE permit usually satisfies both state and federal requirements. The harder questions are whether the wet spot on your land is actually a regulated wetland, whether your planned activity falls inside one of the narrow exemptions, and what EGLE will demand before approving the work.

Which Wetlands Are Regulated

Michigan defines a wetland as land that is inundated or saturated by water frequently and long enough to support vegetation adapted to wet conditions. Bogs, swamps, and marshes are the obvious cases, but the definition also captures areas with hydric soils and water-tolerant plants where standing water is not always visible.¹

Not every wet area on your parcel is regulated. Under Part 303 of the Natural Resources and Environmental Protection Act, a wetland is protected if it meets at least one of these criteria:

It is contiguous to the Great Lakes, Lake St. Clair, an inland lake, pond, river, or stream.
It is five acres or larger, regardless of location.
It is smaller than five acres and isolated, but EGLE determines it is essential to preserving the state’s natural resources.

That third category gives EGLE meaningful discretion. A small, isolated wetland can still be regulated if it provides critical habitat or flood control in a watershed that has already lost much of its wetland area.¹

One boundary worth naming: the U.S. Supreme Court’s 2023 decision in Sackett v. EPA narrowed federal wetland jurisdiction to wetlands with a continuous surface connection to navigable waters. Michigan’s Part 303 has independent criteria based on size, contiguity, and ecological importance, so a wetland that lost federal protection after Sackett may still be fully regulated under state law.

Activities That Trigger the Permit Requirement

Four categories of activity in a regulated wetland require an EGLE permit:

Depositing fill: adding soil, sand, gravel, construction debris, or any other material.
Dredging or removing soil, peat, minerals, or other substances.
Constructing, operating, or maintaining any use or development, including structures, roads, and utilities.
Draining surface water through ditching, tiling, or similar means.

These prohibitions are broadly worded. Even minor work such as grading a path or installing a culvert can trigger the permit requirement if it happens within a regulated wetland.²

What Doesn’t Need a Permit

Part 303 exempts a defined list of activities. Other state or federal rules may still apply, but you don’t need a Part 303 wetland permit for:

Recreation, including fishing, hunting, trapping, hiking, swimming, and boating.
Grazing livestock, with reasonable fencing.
Established farming and forestry: plowing, seeding, cultivating, harvesting, irrigation, minor drainage, and silviculture, so long as they are part of an ongoing operation.
Building and maintaining farm or stock ponds for agricultural use.
Maintaining existing utility lines and support structures, provided the work minimizes wetland impacts and does not expand the original footprint.

The farming exemption is narrower than the label suggests. The Michigan Supreme Court held in Huggett v. Dep’t of Natural Resources that it does not authorize full-scale construction of a new farm, only activities of the same kind and character as those listed. Converting a forested wetland to cropland, or bringing previously unused wetland into agricultural production, falls outside the exemption.³

Utility maintenance also trips people up. Replacing a line of the same size and type is generally exempt. Expanding a line, modifying a road or pad beyond its existing footprint, or converting wetland to a new use during the work requires a permit.⁴

Confirm the Wetland Before You Apply

Before paying for a full permit application, find out whether regulated wetlands actually exist on your property and where their boundaries lie. EGLE runs two programs that make this straightforward.

Wetland Identification Program

EGLE’s Wetland Identification Program (WIP) helps property owners determine whether wetlands are present and where the edges run. There are two service levels:

Level 2, for smaller, non-commercial projects. EGLE staff visit the site, flag wetland boundaries using GPS, and issue a report. The review area is capped at five acres.
Level 3, for larger or more complex properties. A private wetland consultant delineates and flags the boundaries first, and EGLE staff then verify the delineation on site. There is no acreage limit.

Both levels carry a three-year jurisdictional guarantee of the identified boundaries. Applications submitted from October through winter are held until the spring growing season begins. Expedited processing is available for triple the standard fee.⁵

Pre-Application Meetings

EGLE offers voluntary pre-application meetings where you can discuss a proposed project with regulatory staff before filing. Staff review existing maps and database records, walk the site with you if the meeting is on location, identify aquatic resources that appear to be present, and flag potential issues. If enough information is available, they may provide a written statement about whether your project needs a permit.

Pre-application meetings will not produce a boundary delineation or any commitment about whether a permit will ultimately be issued. Fees run from no charge for a small residential lot discussed in the district office up to $1,000 for larger on-site meetings.⁶

How to Apply

Permit applications go through EGLE’s Water Resources Division using the state’s Joint Permit Application. You submit detailed site plans, a description of the wetland and the proposed activity, and an explanation of alternatives considered to avoid or minimize wetland impacts. EGLE determines whether the application also requires joint review with the U.S. Army Corps of Engineers and forwards it when appropriate.⁷

Application Fees

Fees vary by project type and complexity:

General permits for minor-impact activities: $50
Minor project categories: $100
Standard individual permits: $500 base fee
Major projects: $2,000

Specialized projects such as marina construction carry their own fee schedules. Permit transfers and minor revisions each cost $250.⁸

Timeline

Under Part 303, EGLE has 60 days from receiving a completed application and fee to decide whether to hold a public hearing. If a local government with its own wetland ordinance is reviewing the application in parallel, that local review must be completed within 90 days or the application is automatically considered approved.⁹ Complex projects that require additional information, public comment, or joint federal review take longer. General permits and minor project categories move through an expedited process.

How EGLE Decides

A permit cannot be issued unless EGLE determines the activity is in the public interest, necessary to achieve its expected benefits, and otherwise lawful. The public-interest determination weighs the expected benefits of the project against foreseeable harm to wetland resources. The statute directs EGLE to consider:

The public and private need for the proposed activity
Whether feasible alternative locations or methods exist
The permanence of beneficial and harmful effects
Cumulative effects of existing and anticipated activities in the watershed
Effects on historic, cultural, scenic, ecological, and recreational values
The size of the wetland and the amount of remaining wetland in the area
Proximity to waterways
The economic value of the proposed change

Beyond that balancing test, the applicant must show the project will not cause an unacceptable disruption to aquatic resources. The applicant must also demonstrate either that the activity depends on being located in the wetland or that no feasible and prudent alternative exists. EGLE can consider property the applicant does not currently own but could reasonably acquire as an alternative site.¹⁰

The “no feasible alternative” requirement is where many applications fail. If you can accomplish your project’s basic purpose on upland areas of your property or on a different parcel, EGLE is likely to deny the wetland permit. Building a credible necessity showing into the application from the start saves time and money.

Mitigation if Your Permit Is Approved

When EGLE approves a permit that will destroy or degrade wetlands, the applicant must compensate for the ecological loss through mitigation. The goal is no net loss of wetland functions. Three options are available: creating new wetlands, restoring degraded ones, or purchasing credits from a certified wetland mitigation bank.

Mitigation Ratios

The required ratio of replacement wetland to destroyed wetland depends on the ecological type affected:

Rare or imperiled wetland types: 5 acres of mitigation for every 1 acre of impact.
Forested wetlands, coastal wetlands, and wetlands bordering inland lakes: 2 acres for every 1 acre.
All other wetland types: 1.5 acres for every 1 acre.
Preservation of existing wetlands instead of creation or restoration: 10 acres for every 1 acre.

EGLE can adjust any ratio up or down by 20 percent if doing so benefits wetland resources. If the replacement wetland is a different ecological type than what was destroyed, EGLE may increase the ratio further. Applicants who fill or alter a wetland without a permit and then seek an after-the-fact permit face doubled ratios across the board.¹¹

Plans, Timing, and Permanence

Every mitigation project requires a written plan approved by EGLE. Mitigation work generally must be completed before the permitted activity begins, unless EGLE agrees to a concurrent schedule backed by financial assurances. The mitigation site must be permanently protected through a conservation easement so its ecological functions survive future property transfers.¹¹

Mitigation Banking

Mitigation banking lets applicants buy wetland credits from pre-approved banks rather than build their own replacement wetlands. A bank sponsor creates or restores wetlands in advance, EGLE certifies credits based on ecological value, and permit holders purchase credits to satisfy their mitigation obligations. Banks are often larger and better-designed than one-off projects. Availability of bank credits does not guarantee EGLE will approve the underlying permit.¹²

Penalties for Working Without a Permit

Filling, draining, or building in a regulated wetland without a permit carries substantial financial and criminal exposure. A court can impose civil fines of up to $10,000 per day of violation and order the violator to restore the wetland to its pre-violation condition. Anyone who willfully or recklessly violates a permit condition faces misdemeanor charges, with fines ranging from $2,500 to $25,000 per day and up to one year in jail. Corporate officers who knew about or were responsible for the violation face the same exposure. A second offense escalates to a felony, punishable by up to $50,000 per day and up to two years of imprisonment.¹³

Because Michigan administers the Section 404 program, most enforcement happens at the state level, but the EPA retains independent authority to pursue Clean Water Act violations. Federal civil penalties under Section 309 can reach $68,445 per day of violation as of 2025, adjusted annually for inflation.¹⁴

Restoration orders often hurt more than the fines. Reconstructing a wetland to its original condition after unauthorized filling can cost many times the penalty amount, especially when doubled mitigation ratios apply to any after-the-fact permit.

Buying or Selling Property With Wetlands

Michigan’s Seller Disclosure Act requires sellers to report known conditions affecting the property. Wetlands are not specifically listed on the statutory form, but the general obligation to disclose known conditions covers them. A seller who knows the property contains regulated wetlands and stays silent risks fraud or misrepresentation claims if the buyer discovers the wetlands only after closing and finds their development plans blocked.¹⁵

Buyers should not rely on seller disclosures alone. If you are buying with development in mind, requesting a wetland identification through EGLE’s WIP before closing can prevent expensive surprises, and the three-year jurisdictional guarantee gives you a reliable baseline for planning. Check as well whether any previous wetland fill on the parcel was done under a proper permit. Unpermitted fill can create continuing-violation liability that transfers with the land.

1
Michigan Legislature. Michigan Compiled Laws Section 324.30301
2
Michigan Legislature. Michigan Compiled Laws Section 324.30304
3
Michigan Legislature. Michigan Compiled Laws Section 324.30305
4
State of Michigan. Utilities Exemptions under Part 303, Wetlands Protection
5
Department of Environment, Great Lakes, and Energy. Wetland Identification Program
6
Department of Environment, Great Lakes, and Energy. Pre-application Meeting – Wetlands and Inland Lakes and Streams
7
Department of Environment, Great Lakes, and Energy. Wetland Permits
8
Department of Environment, Great Lakes, and Energy. Joint Permit Application Fee Schedule
9
Michigan Legislature. Michigan Compiled Laws Section 324.30307
10
Michigan Legislature. Michigan Compiled Laws Section 324.30311
11
Department of Environment, Great Lakes, and Energy. Wetland Mitigation
12
Department of Environment, Great Lakes, and Energy. Wetland Mitigation Banking
13
Michigan Legislature. Michigan Compiled Laws Section 324.30316
14
eCFR. Statutory Civil Monetary Penalties, as Adjusted for Inflation, and Tables
15
Michigan Legislature. Michigan Seller Disclosure Act, Act 92 of 1993