S.D. Codified Laws § 5-5-25
The commissioner shall notify each lessee by certified or registered mail directed to his post office address, as shown by the records in the office of the commissioner, on or before the first day of November first preceding the expiration of each lease that such lease will expire the following March first. Such notice shall be made in triplicate and two copies thereof mailed to the lessee.
The commissioner shall state in such notice the rental rate at which such lease can be extended for an additional five years. Such rate for grazing leases shall be the current rental on common school, indemnity, and endowment lands at the time of the issuance of the notice to the lessee. Such rate for agriculture leases shall be as provided for in § 5-5-6.1.
SDCL 5-5-25