Mich. Comp. Laws § 324.30912
If the lake board passes a resolution in which it determines the project to be practicable, the lake board shall determine to proceed with the project, shall approve the plans and estimate of costs as originally presented or as revised, corrected, amended, or changed, and shall determine the sufficiency of the petition for the improvement. The resolution shall be published once in a newspaper of general circulation in each local unit of government to be affected. After the resolution has been published, the sufficiency of the petition shall not be subject to attack except in an action brought in a court of competent jurisdiction within 30 days after publication. The lake board, after finally accepting the special assessment district, shall prepare an assessment roll based upon the benefits to be derived from the proposed lake improvement, and the lake board shall direct the assessing official of each local unit of government to be affected to join in making an assessment roll in which shall be entered and described all the parcels of land to be assessed, with the names of the respective owners of the parcels of land, if known, and the total amount to be assessed against each parcel of land and against each local unit of government to be affected, which amount shall be such relative portion of the whole sum to be levied against all parcels of land and local units of government in the special assessment district as the benefit to such parcel of land and local unit of government bears to the total benefit to all parcels of land and local units of government in the special assessment district. When the assessment roll has been completed, each assessing official shall affix to the assessment roll his or her certificate stating that it was made pursuant to a resolution of the lake board adopted on a specified date, and that in making the assessment roll he or she has, according to his or her best judgment, conformed in all respects to the directions contained in the resolution and the statutes of the state.
MCL 324.30912