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High Risk Erosion Areas

  • You can check the maps and lists of regulated parcels available at or go to MiEnviro Site Map Explorer, type in your address and turn on the Map Layer for High Risk Erosion Zones under the Coastal Tab. The zones will show up in a light green. Click in the light green area to view the setbacks. Contact EGLE if you have questions.

  • The Great Lakes shoreline is an actively eroding coast. Some shorelines erode more quickly than others. These are high risk erosion areas (HREAs). The HREAs are eroding at an average annual rate of one foot or greater per year over at least 15 years. EGLE studies the shoreline to identify HREAs. The law tells EGLE how to conduct the studies of the shoreline. Building a structure too close to the edge of the bluff puts it at risk of falling into the lake. Planned development and construction in a HREA helps to prevent the loss of structures. Locating structures safely back from the bluff may also reduce the need for engineered shore protection. Less shore protection promotes natural shorelines for you, your neighbors, and wildlife. Learn more about high risk erosion areas at and view the fact sheet on High Risk Erosion Areas.