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Roberts Lake Dam removal and culvert installation set for August
June 01, 2026
Aging dam to be replaced with a channel-spanning bottomless box culvert
Work to remove Roberts Lake Dam in Cheboygan County and replace it with a channel-spanning culvert will begin in August. The new culvert will allow water and debris to pass beneath the road, reconnect aquatic habitat and protect road infrastructure and downstream habitat, as well as prevent a future dam failure event.
The construction work is expected to take approximately four weeks and will include incremental lowering of the lake level, full dam removal, and installation of a new, 16-foot-span bottomless box culvert that meets modern standards.
Roberts Lake Road will be closed during construction but will reopen to the public upon project completion.
While the water level will be lowered at Roberts Lake due to the dam removal, no change to water level at nearby Cochran Lake is expected. The water level in Roberts Lake is expected to return to its historical natural state with a maximum depth of approximately 5 feet. The lake, as it existed prior to 1948, will remain on the landscape and retain the name Roberts Lake following dam removal.
The dam, located at the Roberts Lake Road crossing of Twin Lakes Creek in Cheboygan County, is owned by the State of Michigan and maintained by the Michigan Department of Natural Resources Fisheries Division. Once the dam has been removed, the new culvert under Roberts Lake Road will be owned and maintained by the Cheboygan County Road Commission. The surrounding parcels will continue to be managed as public land by the DNR.
Several organizations have come together to implement this project, including the DNR, the Michigan Department of Environment, Great Lakes and Energy, Cheboygan County Road Commission, Huron Pines, J.E. Tiffany & Sons LLC (engineering) and Team Elmers (construction).
Funding for the project was provided by a grant from America’s Ecosystem Restoration Initiative to support 27 stream barrier projects throughout Michigan. The approximate project cost is $335,000, which is fully covered by grant funds and significantly lower than the cost of rebuilding the dam to current safety and environmental standards that would be borne by the DNR. This project also provides the DNR long-term cost savings through elimination of ongoing inspection and maintenance expenses associated with dam ownership.
About Roberts Lake Dam
Roberts Lake Dam was constructed by the DNR in 1948 to enhance fishing opportunities. Although the dam raised the water level approximately 2 to 3 feet, the lake never produced a high-quality recreational fishery and experienced multiple winter fish kills attributed to shallow water and low dissolved oxygen.
Now 78 years old, it is well outside the 50-year life expectancy for dams of this type (per the American Society of Civil Engineers). Roberts Lake Dam was rated in poor condition by EGLE Dam Safety Unit inspection reports in 2020 and 2025 and experienced recurring accumulation of debris and silt at the dam inlet, which threatens the integrity of the road over the dam.
DNR-managed dams
This dam is being removed as part of the DNR’s overall strategy for managing its dam assets; this includes removing dams that are not critical to its mission and ensuring that 90% of retained dams are rated in “fair” or “better” condition within the next five years.
The decision to remove a dam is difficult, with several important factors to weigh, including public safety, natural resources and recreational benefits and wise stewardship of limited funding. With 201 dams in the DNR inventory, engineers estimate that approximately $74 million will be required over the next five years to address dams that need maintenance, repair and removal. The DNR is working to make the best use of all internal and external funds to accomplish responsible dam management.
Note to editors: Accompanying photos are available below for download. Caption information follows.
- Bottomless box culvert: The Michigan Department of Natural Resources is planning to remove the nearly 80-year-old Roberts Lake Dam in Cheboygan County this summer. The project also includes installing a new bottomless box culvert that is similar in design to the culvert installed at the former site of the Timberland Ranch Dam on the West Branch Tittabawassee River in Roscommon County. Photo credit: Huron Pines.
- Historical water levels: The water level of Roberts Lake is expected to return to its historical natural state with a maximum depth of approximately 5 feet following removal of the Roberts Lake Dam this summer. The project is expected to begin in August.