The director of natural resources may erect and maintain suitable markers to warn boaters of dams, that are hazardous on all waters of the state that are regularly used by the public, whether seasonally or during all seasons, for canoeing, kayaking, or similar watercraft recreation.
Water recreation hazard warning markers
Ohio Rev. Code Ann. § 1501.22, under Chapter 1501 | Department Of Natural Resources - General Provisions.
Ohio Rev. Code Ann. § 1501.22