Ohio Rev. Code Ann. § 6155.11

The board of county commissioners shall order the amounts, as provided in section 6155.09 of the Revised Code, to be placed upon the tax duplicate against the real estate of the petitioners and all other landowners benefited by the removal of the milldam. Such amounts shall be collected within the time and to meet the payments as far as practicable as provided in the laws relating to county ditches, whether agreed upon between the board and the milldam owner or fixed by the board or otherwise pursuant to such laws, adding to the first year's assessment the taxable costs of the proceedings and the estimated costs of removing the milldam.