S.D. Codified Laws § 46A-7-33
All assessments on real property and to the extent provided by the act of Congress of August 11, 1916, as amended to January 1, 2011, on entered and unentered public lands, are a lien against the property assessed from and after the day the real estate taxes become a lien. The assessments shall draw interest at the same rate and from the same date as unpaid real estate taxes, and such lien is not removed until the assessments are paid or the property sold for the payment of the assessments. The county treasurer shall collect the assessments in the same manner as other taxes against real estate are collected, and the revenue laws of the state for the collection of taxes and sale of land for such taxes apply to the collection of assessments under this chapter.
SDCL 46A-7-33