Mich. Comp. Laws § 324.34141
Any person may advance money for the payment of any part of the cost of a project and shall be reimbursed by the irrigation special assessment district, with or without interest as may be agreed, when funds are available for that purpose. The obligation of the irrigation special assessment district to make the reimbursement may be evidenced by a contract or note, which contract or note may pledge the full faith and credit of the irrigation special assessment district and may be made payable out of the assessments made against properties in the irrigation special assessment district, out of the proceeds of bonds issued by the irrigation special assessment district pursuant to this part, or out of any other available funds, but the contract or note is subject to the revised municipal finance act, 2001 PA 34, MCL 141.2101 to 141.2821.
MCL 324.34141