Mich. Comp. Laws § 280.302
The revolving fund may be used for paying the engineer or surveyor for his services in laying out a drainage district, also any necessary assistance therefor and to pay any and all other services to the date of letting the drain contract for paying members of boards of determination for services performed under this act, for necessary repairs on old drains, and also for paying drain orders that are due not in excess of $2,000.00 if authorized by the board of supervisors. Orders drawn by the commissioner on the revolving fund may be made payable upon the performance of services herein defined. From said revolving fund may be paid the services herein mentioned on any drain or drainage district affecting more than 1 county. Such total expense is prorated among the several counties affected according to the amount apportioned to be paid by and in said counties respectively for said drain. Any and all orders for services rendered or expenses incurred after the date of letting the drain contract shall be paid in the manner prescribed in chapter 10, being sections 241 to 248.
MCL 280.302