S.D. Codified Laws § 7-30-17
No quarter section, or adjoining quarter section which is partially covered by the reservoir at high-water mark shall be leased or sold to another than the lessee unless the new lessee shall first pay to the county auditor for the lessee a reasonable amount for the work, labor, and material used or furnished in the building of such dam or any additions thereto, less ten percent for each year following the building of the dam or the making of any additions thereto. Any payments received from the federal government under its range program, or under any other federal program or project for the building of such dam or any addition thereto, shall also be deducted. The amount which shall be paid for the lessee, as herein provided, shall be determined in the same manner in which the value of other improvements on leased county land are determined under the provisions of §§ 7-31-9 and 7-31-10.
SDCL 7-30-17