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Michigan Court of Claims Dismisses Lawsuit Against State Over Edenville Dam Failure
April 23, 2026
LANSING – Today, the Michigan Court of Claims dismissed a lawsuit filed against the State of Michigan (PDF) regarding the May 2020 Edenville Dam failure, announced Michigan Attorney General Dana Nessel. The Court found that the State was not responsible for the disaster and that the key allegations made by the plaintiffs were not supported by the evidence.
“The Edenville Dam failure was tragic, and while the evidence has always shown the State was not responsible, we have taken decisive action against those who were,” said Attorney General Nessel. “We acknowledge the lasting impact this has on Mid-Michigan, and our thoughts remain with those affected.”
On May 19, 2020, the east embankment of the Edenville Dam failed, sending a surge of water downstream that resulted in catastrophe for the surrounding communities, including State resources. The State had a substantial claim against the dam owners, but when the dam owners filed for bankruptcy and flood survivors pursued the owners’ assets, the State stepped out of the way to ensure that as much of the assets as possible would be distributed to flood survivors.
The State still pursued the dam owners in the U.S. District Court for the Western District of Michigan, and obtained a ruling that the owners had violated the law. In 2023, the State secured a nearly $120 million judgment against Lee Mueller, the person in charge of the dam, reflecting his responsibility for the catastrophic failure. The Court held that Mueller did not disclose his belief about the dam’s vulnerability to the State, and noted that Boyce Hydro “never implemented” a planned “cutoff wall” that “would have been more likely than not to have prevented the failure.”
The Court of Claims ruled decisively in favor of the State on every key factual and legal issue. The Court’s factual findings confirm what the State has been communicating to the public ever since the dam failed. For example, the Court found that:
- At all times, the dam was operationally controlled by the private owners, and not the State;
- None of the many inspections and analyses of the dam during its nearly 100-year lifetime forewarned the State that the normal water levels of Wixom Lake were unsafe or presented an imminent risk of harm;
- Once jurisdiction of the dam passed to the State from federal regulators, EGLE acted promptly to address the safety issues at the dam;
- The initiative to maintain the normal summer level of Wixom Lake was not initiated by the State;
- The State did not withhold information or seek to conceal information related to the condition of the Edenville Dam; and
- The State did not prioritize environmental concerns or natural resource damages over the public health, safety, and welfare.
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