Ohio Revised Code Title XV. Conservation of Natural Resources § 1546.20

No person shall injure, alter, destroy, remove, or change any tree, building, dock, or land, or part thereof, within a state reservoir park or other body of water under the supervision and control of the division of parks and watercraft, or construct any building or dock within such reservoir park, without the written permission of the chief of the division. All lessees of state lands or lots shall keep the premises in good condition and free of weeds, inflammable substances, garbage, and all other unsightly or dangerous things. Proof that any state premises under lease are used for illegal or immoral purposes shall be just cause for the chief to cancel the leasehold for such state property.