S.D. Codified Laws § 1-16H-36
The authority shall designate a qualified public depository as defined in § 4-6A-1 as a depository of its money. Those depositories shall be designated only within the state and upon condition that bonds approved as to form and surety by the authority and at least equal in amount to the maximum sum expected to be on deposit at any one time shall be first given by the depositories to the authority, those bonds to be conditioned for the safekeeping and prompt repayment of the deposits. If any of the funds of the authority are deposited by the treasurer in any such depository, the treasurer and the sureties on the treasurer's official bond are, to that extent, exempt from liability for the loss of any of the deposited funds by reason of the failure, bankruptcy, or any other act or default of the depository. However, the authority may accept assignments of collateral by any depository of its funds to secure the deposits to the same extent and conditioned in the same manner as assignments of collateral are permitted by law to secure deposits of the funds consistent with the provisions of chapter 4-6A.
SDCL 1-16H-36