Michigan Gov. Gretchen Whitmer sent a letter to the Michigan Department of Environment, Great Lakes and Energy on Wednesday asking the department to investigate what caused the failure of the Edenville and Sanford dams.
The two dams failed last week after heavy rainfall in mid-Michigan. The resulting flood displaced around 10,000 people across several counties and was so heavy it was classified as a 500-year flood, meaning it is likely to happen only once every 500 years, according to MLive. Whitmer issued an emergency declaration and sent in the National Guard.
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