Mich. Comp. Laws § 120.13
Each port commission shall have power to acquire by purchase or condemnation, or both, all lands, property, property rights, leases or easements necessary for the purposes of the port districts and to exercise domain in the acquirement or damaging of all land, property, property rights, leases or easements. Such right of domain shall be exercised in the same manner and by the same procedure as is and may be provided by law for the taking of private property by the board of county supervisors in this state, except insofar as such may be inconsistent with the provisions of this act, and the duties devolving upon the county treasurer under such law shall be and the same are hereby imposed upon the county treasurer for the county in which such property is located for the purposes of this act.
MCL 120.13