S.D. Codified Laws § 10-6-116 (2026)
Any agricultural land within one hundred twenty feet of:
that meets the requirements of § 10-6-117 is specifically classified for the purpose of taxation as a riparian buffer strip. The riparian buffer strip shall be assessed at fifty percent of its agricultural income value as determined by §§ 10-6-127 to 10-6-133, inclusive.
In addition, the board of county commissioners may, by resolution, authorize the director of equalization to treat any agricultural land within one hundred twenty feet of a tributary to any lake, river, or stream specified in subdivision (1) and (2) as a riparian buffer strip for the purposes of taxation. The riparian buffer strip shall meet the requirements of § 10-6-117 and shall be assessed at fifty percent of its agricultural income value as determined by §§ 10-6-127 to 10-6-133, inclusive.
Source: SL 2017, ch 63 , § 1; SL 2018, ch 60 , § 1; SDCL § 10-6-31.7; SL 2021, ch 44 , § 44; SL 2021, ch 46 , § 1.