(a)
Use of appropriated funds— The Secretary may use appropriated funds to carry out the St. Mary Canal Rehabilitation Phase 1 Project.
(b)
Participation of Blackfeet Tribe—
(1)
In general— The Secretary shall coordinate with the Blackfeet Tribe with respect to any replacement activities carried out under the St. Mary Canal Rehabilitation Phase 1 Project.
(2)
Effect on rights of Tribe— This Act shall not be considered to be an Act appropriating funds for the rehabilitation of the St. Mary Unit for purposes of section 3708(b)(2)(A) of the Blackfeet Water Rights Settlement Act (Public Law 114–322; 130 Stat. 1823).
(c)
Cost-Sharing requirement— The Federal share of the total cost of the St. Mary Canal Rehabilitation Phase 1 Project shall be not less than 26.04 percent, which shall be nonreimbursable to the United States.
(d)
Study of ability To pay— Not later than 1 year after the date on which funds are first appropriated for the St. Mary Canal Rehabilitation Phase 1 Project under subsection (f), the Secretary shall conduct, at Federal expense, a study of the ability of the Project Beneficiaries to pay, in accordance with procedures established by the Secretary, the costs of the St. Mary Canal Rehabilitation Phase 1 Project.
(e)
Repayment terms— Based on the study conducted under subsection (d), the Secretary shall establish the repayment terms for the Project Beneficiaries with respect to the St. Mary Canal Rehabilitation Phase 1 Project.
(f)
Authorization of appropriations—
(1)
In general— Subject to adjustment under paragraph (2), there is authorized to be appropriated to the Secretary $52,000,000 for the St. Mary Canal Rehabilitation Phase 1 Project for the period of fiscal years 2022 through 2032.
(2)
Adjustment of amount— The amount referred to in paragraph (1) may be increased or decreased in accordance with ordinary fluctuations in development costs incurred after the date of enactment of this Act, as indicated by any available engineering cost indices applicable to construction activities that are similar to the construction of the St. Mary Canal Rehabilitation Phase 1 Project, as determined by the Secretary.