S.D. Codified Laws § 49-17A-30
Current with legislation signed by the governor on or before 3/6/2024
For the security of such bonds or notes the authority may execute and make mortgages or deeds of trust of the whole or any part of its property which, together with any assignments or release thereof, shall be filed in the Office of the Secretary of State.
SDCL 49-17A-30