Michigan has over 2,500 dams that are owned by both public and private entities. Most of these dams were constructed in the late 1800s to early 1900s to power mills or to generate hydropower. The vast majority have since been retired from their original function and now primarily serve for aesthetic or recreational purposes. As many of these dams persist beyond their original intended design life, it is important to monitor their conditions, perform on-going maintenance and repairs, and plan for long-term solutions.
Approximately 1,000 dams in Michigan meet criteria to be regulated by the State under Part 315, Dam Safety and/or Part 307, Inland Lake Levels, of the Natural Resources and Environmental Protection Act, 1994 PA 451, as amended.
The Dam Safety Unit is responsible for regulating Michigan dams under Part 315, Dam Safety and Part 307, Inland Lake Levels. The program focuses on ensuring that regulated dams are properly constructed, inspected and maintained, and that the owners have adequately prepared for potential emergencies.
Program staff performs a variety of duties, including:
This map is an overview of the dams in Michigan, including those that are regulated by the State of Michigan. Users can click on the dam to learn more information, such as its name, its owner, and regulatory authority.
Launch the interactive map Access the dataKendra Preston, PrestonK6@Michigan.gov, 517-388-0791 or Dam Safety Staff Map by Region
