S.D. Codified Laws § 11-7-24
Real property in an area needed for a project, which is to be acquired by eminent domain pursuant to § 11-7-22, may be acquired by the commission for such project, including any property devoted to a public use, whether or not held in trust, notwithstanding that such property may have been previously acquired by eminent domain or is owned by a public utility corporation it being hereby expressly determined that the public use in conformity with the provisions of this chapter shall be deemed a superior public use; provided, however, that property devoted to a public use may be so acquired only if the governing body of the municipality or the county as applicable has approved its acquisition by the commission. An award of compensation shall not be increased by reason of any increase in the value of the real property caused by the assembly, clearance or reconstruction, or proposed assembly, clearance or reconstruction for the purposes of this chapter of the real property in an area.
SDCL 11-7-24