South Dakota Codified Laws
Chapter 01 - General Provisions
Section 57A-1-206 - Presumptions.

57A-1-206. Presumptions.
Whenever this title creates a "presumption" with respect to a fact, or provides that a fact is "presumed," the trier of fact must find the existence of the fact unless and until evidence is introduced that supports a finding of its nonexistence.

Source: SL 2008, ch 259, ยง14.