Pub. L. 90-537, tit. IV, sec. 402

Sec. 402. The Secretary shall determine the repayment capability of Indian lands within, under, or served by any unit of the project. Construction costs allocated to irrigation of Indian lands (including provision of water for incidental domestic and stock water uses) and within the repayment capability of such lands shall be subject to the Act of July 1, 1932 (47 Stat. 564; 25 U.S.C. 386a), and such costs that are beyond repayment capability of such lands shall be nonreimbursable.