Mich. Comp. Laws § 280.429
Subject to the consent and approval of the several boards of supervisors of this state and the boards of supervisors of the counties comprising intercounty drainage districts, the several county drain commissioners and the drainage boards of intercounty drainage districts are hereby authorized to grant unto the United States of America the right to use all the easements and rights of way conveyed to their respective drainage districts or to any county or counties lying wholly or in part in such districts, for the construction and maintenance of any county or intercounty drain by the United States in connection with any flood control project undertaken by the United States acting through its war department or any other federal department or agency. In such cases in which the work is to be performed at the expense of the United States, it shall not be necessary for the drain commissioner or drainage board to advertise for bids or to let contracts for the construction or maintenance of any such flood control project.
MCL 280.429