STUDY.

SEC. 608. STUDY. (a) In General.—Not later than 1 year after the date of enactment of this Act, the Secretary shall arrange for the United States Geological Survey, in consultation with the Bureau of Indian Affairs and other appropriate Federal agencies, to conduct a comprehensive study of the potential impacts of the transfer of land under sections 805(b) and 806(b), including potential impacts on South Dakota Sioux Tribes having water claims within the Missouri River Basin, on water flows in the Missouri River. (b) No Transfer Pending Determination.—No transfer of land under section 805(b) or 806(b) shall occur until the Secretary determines, based on the study, that the transfer of land under either section will not significantly reduce the amount of water flow to the downstream States of the Missouri River.