S.D. Codified Laws § 11-3-3
All the lots, if included in blocks, shall be numbered in consecutive numbers starting with one, and the blocks shall also be numbered in consecutive numbers or letters, and the precise length and necessary angles of all lot and block lines, and the precise length and bearing angles of all subdivision boundary lines shall be stated on the plat. All lots not included in blocks, and all parcels or tracts shall in like manner be surveyed and numbered or lettered consecutively and the precise length and bearing angle of all lines and the acreage of each lot, parcel, or tract and the total acreage within the subdivision boundaries shall be stated on the plat together with any streets which shall divide or border the same. The plat shall include the length, central angle, and any other data necessary to properly survey any curve included on the plat.
SDCL 11-3-3