; and (iii) in the third sentence, by striking in fiscal years commencing after the enactment of this Act and inserting for fiscal year 2024 and each fiscal year thereafter ; and (C) by striking paragraph (3) and inserting the following: (3) Federal contributions to annual base funding (A) In general For each of fiscal years 2024 through 2031, the Secretary, acting through the Bureau of Reclamation, may accept funds from other Federal agencies, including power revenues collected pursuant to the Act of April 11, 1956 (commonly known as the “Colorado River Storage Project Act”) ( 43 U.S.C. 620 et seq. ). (B) Availability of funds Funds made available under subparagraph (A) shall be available for expenditure by the Secretary, as determined by the contributing agency in consultation with the Secretary. (C) Treatment of funds Funds made available under subparagraph (A) shall be treated as nonreimbursable Federal expenditures. (D) Treatment of power revenues Any power revenues accepted under subparagraph (A) shall be treated as having been repaid and returned to the general fund of the Treasury. (4) Non-Federal contributions to annual base funding The Secretary, acting through the Bureau of Reclamation, may accept contributed funds from the Upper Division States, political subdivisions of the Upper Division States, or individuals, entities, or organizations within the Upper Division States, pursuant to agreements that provide for the contributions to be used for annual base funding. (5) Replacement power Contributions of funds made pursuant to this subsection shall not include the cost of replacement power purchased to offset modifications to the operation of the Colorado River Storage Project to benefit threatened or endangered fish species under the Recovery Implementation Programs. ; (5) in subsection (f) (as so redesignated), in the first sentence, by inserting or threatened after endangered