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Show tion of such lands or facilities in the public interest for purposes of this subsection. No lands under the jurisdiction of any other Federal agency may be included for or devoted to recreation purposes under the authority of this Act without the consent of the head of such agency; and the head of any such agency is authorized to transfer any such lands to the jurisdiction of the Secretary for purposes of this subsection. (c) The Secretary may transfer jurisdiction over lands included in the authorized units within or adjacent to the exterior boundaries of national forests and facilities thereon to the Secretary of Agriculture for recreation and other national forest system purposes; and such transfer shall be made in each case in which the lands adjacent to reservoir are located wholly within the exterior boundaries of a national forest unless the Secretaries of Agriculture and Interior jointly determine otherwise. Where any lands are transferred hereunder to the jurisdiction of the Secretary of Agriculture, the lands involved shall become national forest lands: Provided, That the lands and waters within the flow lines of any reservoir or otherwise needed or used for the operation of the authorized units for other purposes shall continue to be administered by the Secretary to the extent he determines to be necessary for such operation. (d) Nothing in this section shall limit the authority of the Secretary under existing provisions of law relating to recreation and fish and wildlife conservation and development at water resource projects or to disposition of public lands for recreation purposes. SEC. 309. The Secretary shall integrate the Dixie project and Southern Nevada water supply project heretofore authorized into the project herein authorized as units thereof under repayment arrangements and participation in the development fund established by title IV of this Act consistent with the provisions of this Act. SEC. 310. There is hereby authorized to be appropriated to carry out the purposes of this title the sum of $1,395,000,000, based on estimated costs as of October, 1963, plus or minus such amounts, if any, as may be justified by reason of ordinary fluctuations in construction costs as indicated by engineering cost indices applicable to the types of construction involved. TITLE IV - LOWER COLORADO RIVER BASIN DEVELOPMENT FUND: ALLOCATION AND REPAYMENT OF COSTS: CONTRACTS SEC. 401. Upon completion of each unit of the project herein or hereafter authorized, or separate feature thereof, the Secretary shall allocate the total costs of constructing said unit or features to (1) commercial power, (2) irrigation, (3) municipal and industrial water supply, (4) flood control, (5) navigation, (6) water quality control, (7) recreation, (8) fish and wildlife, (9) the replenishment of the depletion of Colorado River flows available for use in the United States occasioned by performance of the Water Treaty of 1944 with the United Mexican States (treaty series 994), (10) the additional capacity of the system of main conduits and canals of the Central Arizona unit referred to in section 304 (a), item (1), in excess of two thousand five hundred cubic feet per second and (11) any other purposes authorized under the Federal reclamation laws. Costs of means and measures to prevent loss of and damage to fish and wildlife resources resulting from the construction of the project shall be considered as project costs and allocated as may be appropriate among the project functions. Costs of construction, operation, and maintenance allocated to the replenishment of the depletion of Colorado River flows available for use in the United States occasioned by compliance with the Mexican Water Treaty (including losses in transit, evaporation from regulatory reservoirs, and regulatory losses at the Mexican boundary, incurred in the transportation, storage, and delivery of water in discharge of the obligations of that treaty) shall be nonreimbursable. All funds paid or transferred to Indian tribes pursuant to this Act, including interest on such funds in the Treasury of the United States, and costs of construction of the paved road, authorized in section 303 (b) hereof, shall be nonreimbursable. Costs allocated to recreation and fish and wildlife enhancement shall be nonreimbursable within appropriate limits determined bv the Secretary to be consistent with the provisions of law and policy applicable to other similar Federal projects and programs: Provided, That all of 56 |