Mich. Comp. Laws § 324.60308
Any portion of the annual appropriation provided for in this part that remains unexpended at the close of any fiscal year shall be carried forward into the next fiscal year, to the credit of the department, for the purposes provided under this part, and is subject to expenditure accordingly, it being the intention to make the entire amount appropriated available for the purposes of this part. Any sum remaining in the appropriation on the completion of the soil and economic survey provided for in this part, and after the making of the final report required in this part, is and shall remain a part of the general fund of the state and subject to the incidents pertaining to the general fund. However, if the federal government or any department of the federal government renders aid to this state for the general purposes covered by this part, the appropriation made pursuant to this part shall be reduced by the same amount, which amount shall revert to the general fund of this state.
MCL 324.60308