With over 3,200 miles of Great Lakes coastline, 11,000 inland lakes, and an estimated 5.5 million acres of wetlands, Michigan maintains one of the most comprehensive environmental protection frameworks in the United States. For commercial developers, agricultural operators, municipal engineers, and waterfront property owners, any activity involving dredging, filling, draining, or constructing near aquatic ecosystems is strictly governed by state law.

Primary regulatory oversight is exercised by the Michigan Department of Environment, Great Lakes, and Energy (EGLE) under the Natural Resources and Environmental Protection Act (NREPA), Public Act 451 of 1994. Michigan is uniquely situated as one of only three states with delegated federal authority to administer the Clean Water Act, meaning compliance failures carry dual state and federal ramifications.

Here is the authoritative legal and procedural guide to navigating EGLE wetland and shoreline permits, MiEnviro filings, mitigation ratios, and statutory compliance in 2026.

The Statutory Framework: NREPA Regulatory Parts

EGLE’s Water Resources Division (WRD) enforces several interrelated parts of Public Act 451 of 1994, which collectively regulate land disturbances near water resources:

+-------------------------------------------------------------------------+
|                  NREPA STATUTORY WATER & WETLAND DIVISIONS              |
+-------------------------------------------------------------------------+
                                     |
         +---------------------------+---------------------------+
         |                           |                           |
         v                           v                           v
+------------------+       +-------------------+       +------------------+
|     PART 303     |       |     PART 301      |       |     PART 325     |
|    WETLANDS      |       |   INLAND LAKES    |       |   GREAT LAKES    |
|   PROTECTION     |       |    & STREAMS      |       | SUBMERGED LANDS  |
+------------------+       +-------------------+       +------------------+
| * Dredging/fill  |       | * Docks/seawalls  |       | * Shoreline work |
| * Draining water |       | * Marinas/dredge  |       | * Groins/riprap  |
| * Contiguous wet |       | * Ordinary High   |       | * Bottomland use |
|   or >5 acres    |       |   Water Mark      |       |   of Great Lakes |
+------------------+       +-------------------+       +------------------+

1. Part 303: Wetlands Protection (MCL 324.30301 et seq.)

Prohibits the deposit of fill material, dredging or removal of soil, draining of surface water, or maintenance of any use or development in a regulated wetland without an EGLE permit.

2. Part 301: Inland Lakes and Streams (MCL 324.30101 et seq.)

Governs activities occurring at or below the Ordinary High Water Mark (OHWM) of inland lakes, rivers, streams, and county drains. Regulated activities include installing permanent docks, retaining walls, seawalls, rock riprap, boat ramps, and dredging channels.

3. Part 325: Great Lakes Submerged Lands (MCL 324.32501 et seq.)

Applies to all bottomlands of Lake Michigan, Lake Superior, Lake Huron, Lake Erie, Lake St. Clair, and the St. Marys, St. Clair, and Detroit Rivers. Any shore protection, breakwater, pier, or dredging in Great Lakes waters requires a Part 325 permit.

4. Part 353: Sand Dunes Protection and Management (MCL 324.35301 et seq.)

Protects designated Critical Dune Areas (CDAs) along the Lake Michigan and Lake Superior coasts. Regulates grading, vegetation removal, and residential construction on delicate coastal dune slopes.

Understanding Wetland Jurisdictional Criteria

Not every damp patch of land is a regulated wetland, but property owners cannot rely on visual intuition alone. Under Michigan law, a wetland is defined by the presence of three specific physical criteria: 1. Hydric Soils: Soil that formed under conditions of saturation, flooding, or ponding long enough during the growing season to develop anaerobic conditions (e.g., gleyed soil or dark organic peat). 2. Hydrophytic Vegetation: A predominance of plant species adapted to life in saturated soil conditions (such as cattails, sedges, red maple, willow, and dogwood). 3. Wetland Hydrology: Evidence of regular or periodic surface inundation or groundwater saturation to the surface during the growing season.

Statutory Jurisdictional Triggers

Under NREPA Part 303, a wetland is legally regulated by EGLE if it meets any of the following parameters: * Contiguous to Inland Waters: Connected to or located within 500 feet of an inland lake, pond, river, stream, or impoundment. * Contiguous to the Great Lakes: Located within 1,000 feet of Lake Michigan, Lake Superior, Lake Huron, Lake Erie, or Lake St. Clair. * Non-Contiguous Wetlands Over 5 Acres: Any isolated wetland tract greater than 5 acres in size in counties with a population of 100,000 or greater. * Exceptional Environmental Value: In counties under 100,000 population, EGLE regulates non-contiguous wetlands if it formally determines the wetland possesses exceptional ecological value (e.g., habitat for endangered species or critical aquifer recharge).

The Permitting Hierarchy: Categories and the MiEnviro Portal

All wetland, shoreline, and stream permit applications must be submitted digitally via the MiEnviro Portal (formerly MiWaters). Applications are categorized based on environmental impact severity:

The Federal Clean Water Act Section 404 Exception

Because Michigan administers Section 404, an EGLE Joint Permit Application normally covers both state and federal requirements. However, the U.S. Army Corps of Engineers (USACE) retains independent jurisdiction under Section 10 of the Rivers and Harbors Act of 1899 over commercially navigable waters: * Waters along the Great Lakes, Detroit River, St. Clair River, Saginaw River, and commercial harbors require concurrent USACE Section 10 approval. * The MiEnviro portal automatically routes joint applications to USACE Detroit District when Section 10 triggers are detected.

The Wetland Mitigation Hierarchy: Ratios and Banking

If an applicant seeks an Individual Permit that unavoidable impacts more than one-third of an acre of regulated wetland, EGLE requires compensatory Wetland Mitigation under MCL 324.30308.

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|                    EGLE SEQUENTIAL MITIGATION HIERARCHY                 |
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       1. AVOIDANCE: Demonstrate that no feasible and prudent 
          alternative exists to avoid wetland impact entirely.
                                     |
                                     v
       2. MINIMIZATION: Reconfigure project footprint to minimize
          the square footage of wetland fill or drainage.
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                                     v
       3. COMPENSATORY MITIGATION: Replace lost ecological function
          through wetland restoration, creation, or bank credits.

Statutory Mitigation Ratios

When compensatory mitigation is required, applicants must replace the lost wetland area according to state statutory ratios: * Emergent Wetland: 1.5 to 1 (1.5 acres restored/created for every 1.0 acre destroyed). * Forested Wetland: 2.0 to 1 (due to the extensive multi-decade recovery period). * Wetland Mitigation Banking: Applicants can satisfy mitigation requirements by purchasing certified credits from an approved private or municipal Wetland Mitigation Bank within the same watershed or eco-region, typically costing between $40,000 and $100,000 per credit.

Enforcement, Civil Fines, and Restoration Orders

Unpermitted excavation, seawall installation, or wetland filling carries severe consequences under NREPA Part 303 and Part 301: 1. Notice of Violation (NOV) & Cease and Desist: EGLE field inspectors issue immediate stop-work orders upon discovering unpermitted activities. 2. Administrative Restoration Orders: The property owner can be compelled to remove all unauthorized fill, re-establish pre-existing topography, restore hydrology, and plant native wetland species under multi-year monitoring covenants. 3. Civil Fines (MCL 324.30316): Courts may assess civil penalties of up to $10,000 per day of non-compliance. Willful or knowing violations can result in criminal misdemeanor charges with fines up to $25,000 per day and imprisonment. 4. Property Title Encumbrance: Unresolved environmental enforcement actions can cloud property titles, preventing sales, bank financing, or title insurance issuance.

Before breaking ground within 500 feet of Michigan waters, property owners should request an official EGLE Wetland Identification Program (WIP) site review or retain a professional wetland scientist to conduct a certified delineation.