Critical Dune Assurance Program
Michigan’s sand dunes are one of our greatest natural features. In Michigan there are approximately 250,000 acres of sand dunes, and approximately 70,000 acres are classified as critical sand dunes. These unique natural wonders provide recreational and economical benefits to Michigan. They also serve as an important habitat for many plants, animals, and insects. They also serve as a critical area of transition from the lakes to the inland areas. Many people believe that because Michigan’s dunes are such an awesome natural feature, that they must be protected from destruction. In fact, only one state law attempts to protect our dunes along the coast and it doesn’t necessarily provide protection from destruction for all sand dunes.
Why should we protect sand dunes? Well, the Great Lakes dunes make up the most extensive freshwater dunes in the world. Yes these dunes help protect from storm surges, but they are also important for their overall ecological and aesthetic value.
So how are sand dunes created? Sand dunes are created by a geological process called saltation. To learn more about saltation and watch an interactive clip of this process, go to the following link: Dune History
Here are a few more important links:
History of Michigan Sand Dunes
Common Landowner Questions?
Why is my property considered HREA?- Your property is located in an area that is considered a High Risk Erosion Area or HREA. Erosion does happen naturally; however, poor development increases the rate of erosion.
Why should we protect these HREA areas? First, state law intends to reduce the overall economic and physical damage caused by inappropriate development. Second, it helps to protect all neighboring property owners. HREA regulations are intended to protect the greater good of the state by reducing the need for extra shore protection structures, costly clean-ups, and increased insurance rates. Benefits from HREA regulation include: Great Lakes have better water quality, reduction of pollution entering the great lakes, and impacts on coastal ecosystems have been reduced.
What is Regulated? Approximately 300 miles of Great Lakes Shoreline are classified as high risk erosion areas. You can determine whether or not your property is classified as HREA by taking a look at a critical dunes map of your area. If your property is considered HREA, it does not mean that existing structures or buildings need to be moved or that new structures cannot be built on the property. It just requires that you get a permit from DNRE prior to construction or movement of a permanent structure. Construction can include anything from new septic systems to new additions on a current home. It is possible to construct some structures under 225 sq. ft without obtaining a permit. DNRE staff can help to determine whether or not you need a permit.
Critical Dune Assurance Program Downloads
| Name | Description | Size | Downloads |
|---|---|---|---|
| CRITICAL_DUNE_MAP.pdf | Michigan Protected Dune Map | 811KB | 296 |
| Endangered_Species_Assessment.pdf | Must be completed for projects that break new ground or disturb natural vegetation. | 12KB | 390 |
| ASSURANCE_APPLICATION_APRIL09.pdf | Application for a Vegetataion Removal Assurance for your Critical Dune Permit | 51KB | 298 |