At the annual meeting called under section 6105.16 of the Revised Code the president or duly authorized representative of the board of county commissioners of each watershed county shall, by a majority vote of those present, adopt an expenditure budget for the district for the next succeeding calendar year. The amounts of the budget adopted under this section may be more or less than the amounts contained in the budget submitted under section 6105.15 of the Revised Code.

The total amount of such budget shall be apportioned among the several watershed counties in the ratio that the taxable value of the real and personal property within such county and within the territorial boundaries of the district bears to the taxable value of all real and personal property within the territorial boundaries of the district, but the ratio for such apportionment need not be calculated more often than once every five years.

The amount of such budget so apportioned to each county shall be included in the budget of each county submitted to its budget commission under section 5705.28 of the Revised Code and in the appropriation resolution of the county for the next succeeding calendar year.

The county auditor of each such county shall, after the passage of the appropriation measure for his county, draw his warrant on the treasurer of the county, payable out of moneys to the credit of the general fund of the county so appropriated, to the order of the watershed district for the amount so appropriated, and shall deliver such warrant to the secretary-treasurer of the district.