Ohio Rev. Code Ann. § 6155.06

The board of county commissioners shall forthwith negotiate for the purchase of the milldam sought to be removed under section 6155.01 of the Revised Code and of all the right, title, and interest the owner has to or in it, and all franchises pertaining thereto. The board shall receive in writing the terms on which the owner will grant the absolute right to remove such milldam and for the free passage of water in the channel of such stream.