S.D. Codified Laws § 46A-14-15
After the hearing, if it appears to the conservation district supervisors that public interest in the conservation of the natural resources within the proposed watershed district, including wildlife, water resources, forests, and soils, will be served and protected; that the engineering and economic practicability of creating a district will be sound and feasible, when considered in relation to the public interest; and the resulting cost to the owners of the property to be assessed and that the purpose of this chapter would be served by the creation of a watershed district, the conservation district supervisors shall order a vote to be taken to determine whether a watershed district should be organized. The conservation district supervisors shall file a copy of the election order and a copy of the initiating petition with the county auditor of each county in which a portion of the proposed watershed district will be located. The election shall be conducted in accordance with the applicable provisions of §§ 6-16-2 to 6-16-6, inclusive.
SDCL 46A-14-15