S.D. Codified Laws § 10-28-18
It shall be the duty of the county auditor, after receiving such statement from the Department of Revenue, to turn such statement over to the board of county commissioners, who, at its first meeting after receiving such statement, shall make and enter in the proper record an order stating and declaring the length of the main track of road, branches, and sidetracks and assessed valuation of such road, branches, and sidetracks lying within each township and lesser taxing district in the county through or into which such road or branches thereof run as fixed by the rate of assessment per mile as made by the Department of Revenue; and shall also enter in the proper record the assessment made by the Department of Revenue of the railroad property in such county located within the limits of each municipality transmitted to the city auditor or town clerk thereof, and the amounts so entered of record shall constitute the taxable value of such property for all taxable purposes. They shall transmit a copy of such order and record to the city auditor of each first or second class municipality, the clerk of each third class municipality or civil township, and the proper officer of each lesser taxing district and also to such railroad company.
SDCL 10-28-18