Ohio Rev. Code § 6105.133
No person or governmental agency, except a conservancy district or subdistrict thereof organized under Chapter 6101. of the Revised Code, shall construct any structure or obstruction, or make or permit to be made any change or alteration in any structure or obstruction in a restricted channel or restricted floodway, or relocate, alter, otherwise restrict, deposit into, encroach upon, or change the grade of a restricted channel or restricted floodway without first receiving the written consent of the board of directors of the watershed district in which such restricted channel or restricted floodway is located.
Application for such written consent shall be filed with the secretary of the board and shall be accompanied by plans, profiles, specifications, and such other information as the board may require.
The board shall, within sixty days of the date of receipt of such application, grant or refuse its consent to such construction, change, alteration, relocation, deposit, encroachment, or change of grade or may incorporate in and make a part of its consent such conditions, regulations, or restrictions as it deems advisable.
In the event the board refuses to grant its consent to such construction, change, alteration, relocation, deposit, encroachment, or change of grade in a restricted channel or restricted floodway as set forth in the application filed under this section or makes a part of its consent conditions, regulations, or restrictions not included in the original application, it shall make a finding that the construction, change, alteration, relocation, deposit, encroachment, or change of grade as set forth in the application filed under the second paragraph of this section will restrict the capacity of such restricted channel or efficiency of the restricted floodway so as to constitute an unreasonable hazard to the safety of life and property in times of flood and so notify, in writing, the person or governmental agency which made the application for such consent.
R.C. § 6105.133