S.D. Codified Laws § 38-8A-2
The term, land-disturbing activity, as used in this chapter, means any clearing, tilling, grazing, grading, excavating, transporting, and filling of land, and the implementation of silviculture activities resulting in soil erosion from water or wind and the movement of sediments into any and all waters, public or private, on the surface of the ground, which are contained within, flow through or border lands in the state; or onto lands in the state. Land disturbing activities specifically regulated by other state agencies and that are subject to regulation under chapter 45-6B, chapter 34A-6, or chapter 34A-13, or which otherwise require plans for soil erosion and sediment damage control are exempt from the provisions of this chapter.
SDCL 38-8A-2