Michigan Compiled Laws, Chapter 324. Natural Resources and Environmental Protection § 324.30702

Sec. 30702. (1) The county board of a county in which an inland lake is located may upon the board's own motion, or shall within 45 days following receipt of a petition to the board of 2/3 of the owners of lands abutting the inland lake, initiate action to take the necessary steps to cause to be determined the normal level of the inland lake.

(2) Unless required to act by resolution as provided in this part, the county board may delegate powers and duties under this part to that county's commissioner, road commission, or other delegated authority.

(3) If a court-determined normal level is established pursuant to this part, the delegated authority of the county or counties in which the lake is located shall maintain that normal level.