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DNR to improve Houghton Lake Flats South Unit this summer
June 30, 2026
This summer, the Michigan Department of Natural Resources will rehabilitate the South Unit at Houghton Lakes Flats, a popular spot for wildlife viewing and fishing just off U.S. 127 in Roscommon County.
Once completed, the rehabilitated South Unit dike system will allow the DNR to control water levels in the 350-acre wetland and improve wildlife habitat.
The South Unit dike system was built in the 1960s to mitigate the environmental impact of building U.S. 127. Houghton Lake Flats is sourced by nearby Houghton Lake, the largest inland lake in Michigan.
“The current dike system, which includes several miles of dikes and a dam, provides impounded water for many species of wildlife,” said Mark Boersen, a DNR wildlife biologist based in Roscommon. “However, several years ago the water pump failed, taking away the DNR’s ability to manipulate water levels to improve the wildlife habitat. Additionally, time has taken a toll on the South Unit dam so that it can no longer safely and efficiently hold water.”
Crews will replace the South Unit’s concrete dam, pumphouse, underground pipes and related structures with modern equipment. Construction is expected to begin this summer, once high-water levels drop to an appropriate level, and be completed in the fall.
Public access to the South Unit gazebo and fishing platform will be closed during the project. However, the North Unit of the flats — a 335-acre wetland north of County Road 300 — will remain open during construction.
Boersen said Houghton Lake Flats is a popular location for waterfowl hunting, fishing and wildlife viewing.
“Several secretive and sometimes rare species of wildlife are observed at the flats, such as trumpeter swans, black terns, osprey and the American bittern,” he said. “Although the fishing dock will be closed during construction, visitors are welcome to fish and bird-watch from the dikes or from hand-launched boats.”
The Houghton Lakes Flat project is part of the DNR’s broader strategy to address Michigan’s aging dams and dike systems.
Note to editors: Accompanying DNR photos are available below for download. Caption information follows.
- Houghton Lake Flats South Unit: The DNR will improve the South Unit of Houghton Lake Flats this summer.
- Gazebo: The gazebo at Houghton Lake Flats is popular for wildlife viewing and can be seen from U.S. 127 in Roscommon County.