S.D. Codified Laws § 42-7A-19.1
The commission may provide for the sale of lottery products within the exterior boundaries of any Indian reservation within this state. The commission may pay to the respective tribal government an amount not to exceed fifty percent of the state's net proceeds from lottery products sold within the exterior boundaries of any reservation. The commission shall consider any agreement or potential agreement made pursuant to the authority contained in the Federal Indian Gaming Act together with any other relevant factors, including tribal member and nonmember mix, in determining payment to be made to a tribe. The commission shall by rule, promulgated pursuant to chapter 1-26, establish the specific criteria to determine the amount of net proceeds distributed to each tribal government. Each reservation may only receive revenue pursuant to this chapter from lottery products sold within the exterior boundaries of such reservation. Transfers of net proceeds from the sale of any lottery product to tribal governments under this section shall be made each year pursuant to § 42-7A-24.
SDCL 42-7A-19.1