Ohio Rev. Code § 6101.17: Dominant right of eminent domain.

The board of directors of a conservancy district, when it is necessary for the purposes of this chapter, shall have a dominant right of eminent domain over the right of eminent domain of railroad, telephone, gas, water power, and other companies and corporations, and over townships, counties, and municipal corporations.

In the exercise of this right, due care shall be taken to do no unnecessary damage to other public utilities, and, in case of failure to agree upon the mode and terms of interference, not to interfere with their operation or usefulness beyond the actual necessities of the case, due regard being paid to the other public interests involved.