A bill to authorize a study of the feasibility of Federal development of the water resources of the Little White River Unit located on the Rosebud Sioux Indian Reservation, South Dakota.

Directs the Secretary of the Interior, acting through the Water and Power Resources Service, to conduct a feasibility study of Federal development of the water and related land resources of the Little White River Unit of the Little White River Basin located on the Rosebud Sioux Indian Reservation, Todd County, South Dakota.

Directs the Secretary to prepare a recommended comprehensive plan for such development, considering specified water use needs and problems.

Directs the Secretary to report to Congress within four years of the enactment of this Act.

Authorizes appropriations.