Ohio Rev. Code § 939.05
The director of agriculture, subject to approval of the terms of the agreement by the Ohio soil and water conservation commission, shall enter into cooperative agreements with the supervisors of a soil and water conservation district desiring to enter into those agreements pursuant to section 940.06 of the Revised Code. The agreements shall be entered into to obtain compliance with rules of the director pertaining to agricultural pollution abatement.
The director or the director's designee may enter at reasonable times on private property, with the consent of the property owner, or on public property to inspect and investigate conditions to determine whether or not there is compliance with the rules adopted under division (E)(1) of section 939.02 of the Revised Code. Upon reason to believe there is a violation, the director or the director's designee may apply for and a judge of the court of common pleas for the county where the land is located may issue an appropriate search warrant as necessary to achieve the purposes of this chapter.
R.C. § 939.05