S.D. Codified Laws § 1-41-11
The Board of Natural Resource Development is abolished. There is created a Board of Water and Natural Resources. The board shall perform all functions exercised by the former Board of Natural Resource Development. The Board of Water and Natural Resources shall consist of seven members not all of the same political party and appointed by the Governor for four-year terms. The terms of members of the Board of Water and Natural Resources who are first appointed after the effective date of this order shall be: one appointed for a term of one year; two appointed for a term of two years; two for a term of three years; and two for a term of four years, and such initial terms shall be designated by the Governor. Any member appointed to fill a vacancy arising from other than the natural expiration of a term shall serve for only the unexpired portion of the term.
SDCL 1-41-11