Michigan Compiled Laws, Chapter 324. Natural Resources and Environmental Protection § 324.31520

Sec. 31520. (1) The owner or his or her agent shall advise the department and the affected off-site public authorities and safety agencies of any sudden or unprecedented flood or unusual or alarming circumstance or occurrence existing or anticipated that may affect the safety of the dam within 24 hours of the flood, circumstance, or occurrence.

(2) The owner shall notify the department as soon as possible of any necessary emergency drawdowns, repairs, breaching, or other action being taken in response to an emergency condition.