S.D. Codified Laws § 41-1-1.2
Except for a person who continues to qualify for resident privileges as provided in § 41-1-1.1, a person is deemed to have terminated the person's South Dakota resident status if the person applies for, purchases, or accepts a resident hunting, fishing, or trapping license issued by another state or foreign country; registers to vote in another state or foreign country; accepts a driver's license issued by another state or foreign country; moves to any other state or foreign country and makes it the person's domicile or makes any claim of residency for any purpose in the other state or foreign country; or when a person resides in any other state, territory, or country for an aggregate of one hundred eighty or more days in a calendar year. However, a person who has lawfully acquired a resident hunting, fishing, or trapping license and who leaves the state after acquiring the license to take up residency elsewhere may continue to exercise all the privileges granted by the license until the license expires if the person's respective privileges are not revoked or suspended pursuant to §§ 41-6-75 to 41-6-75.2, inclusive.
SDCL 41-1-1.2