A bill to increase the authorization of appropriations for the Belle Fourche Irrigation Project, and for other purposes.

Modifies the general plan for the Belle Fourche irrigation project, within the Pick-Sloan Missouri Basin program, to include: (1) rehabilitation of the Whitewood Siphon and two Belle Fourche dam outlets; (2) lining at South Canal and rehabilitation of Johnson Lateral for water conservation; (3) replacement or rehabilitation of deteriorated canal bridges; (4) provision of minor lateral rehabilitation and contract support work by the Belle Fourche irrigation district; and (5) a detailed study of project-wide water use management and implementation of improved management practices for the purpose of achieving optimal conservation of water supplies.

Sets forth provisions regarding: (1) the Federal and State share of costs; and (2) extension of the repayment period.

Provides that: (1) before July 1, 1995, the rates of charge to land class in the unit shall continue as established in the November 29, 1949, repayment contract with the district, as subsequently amended and supplemented; and (2) on and after July 1, 1995, such rates of charge and assessable acreage shall be in accordance with the amortization capacity and classification of unit lands as then determined by the Secretary, subject to specified requirements. Permits the rates of charge and assessable acreage to be amended as deemed necessary by the Secretary after final completion of the rehabilitation and betterment program authorized by the Act, at intervals agreed to by the Secretary and the Belle Fourche irrigation district.

Authorizes appropriations for the project.

Directs the Secretary and the district to amend the contract to reflect the amendments made by this Act.