Mich. Comp. Laws § 120.126

Sec. 26. For the purpose of making surveys, soundings, drillings, examinations, and investigations as it considers necessary or convenient for the purposes of this act, an authority and its authorized agents and employees may enter upon the lands, waters, and premises in the authority and that entry shall not be considered a trespass; nor shall an entry for these purposes be considered an entry under any condemnation proceedings which may be then pending. The authority shall make reimbursement for actual damages resulting to the lands, waters, or premises as a result of these activities.