76 STAT. ]
PUBLIC LAW 87-590-AUG. 16, 1962
391
to said purposes and interest on the unamortized balance of said construction allocation and, in addition, within the period fixed by subsection (a) of this section, so much of the irrigation allocation as is beyond the ability of the water users and their Organizations to repay. (c) The interest rate on the unamortized balance of the commercial power and municipal, domestic, and industrial water supply allocations shall be determined by the Secretary of the Treasury, as of the beginning of the fiscal year in which construction is initiated, on the basis of the computed average interest rate payable by the Treasury upon its outstanding marketable public obligations, which are neither due nor callable for redemption for fifteen.years from the date of issue. SEC. 3. (a) The Fryingpan-Arkansas project shall be operated under the direction of the Secretary in accordance with the operating principles adopted by the State of Colorado on December 9, 1960, and reproduced in House Document Numbered 130, Eighty-seventh Congress. (b) The Secretary may appoint the two representatives of the United States to the Commission referred to in paragraph 19 of said principles and may, upon unanimous recommendation of the parties signatory to the operating principles, adopt such modifications therein as are not inconsistent with the provisions of this Act. (c) Any and all benefits and rights of western Colorado water users in and to water stored in the Green Mountain Reservoir, Colorado-Big Thompson project, as described, set forth and defined in Senate Document Numbered 80, Seventy-fifth Congress, shall not be impaired, prejudiced, abrogated, nullified, or diminished in any manner whatever by reason of the authorization, construction, operation, and main tenance of the Fryingpan-Arkansas project. (d) Except for such rights as are appurtenant to lands which are acquired for project purposes, no valid right to the storage or use of water within the natural basin of the Colorado River in the State of Colorado shall be acquired by the Secretary of the Interior through eminent domain proceedings for the purpose of storing or using outside of said basin the water embraced within that right, and no water, the right to the storage or use of which is so acquired by anyone other than the Secretary, shall be transported through or by means of any works of the Fryingpan-Arkansas project from the Colorado River Basin to the Arkansas River Basin. SEC. 4. (a) The Secretary is authorized and directed (1) to investi- Recreational facilitie! gate, plan, construct, operate, and maintain public recreational facilities on lands withdrawn or acquired for the development of said project, (2) to conserve the scenery, the natural, historic, and archeologic objects, and the wildlife on said lands, (3) to provide for public use and enjoyment of the same and of the water areas created by this project by such means as are consistent with the purposes of said project, and (4) to investigate, plan, construct, operate, and maintain facilities for the conservation and development of fish and wildlife resources. The Secretary is authorized to acquire lands and to withdraw public lands from entry or other disposition under the public land laws necessary for the construction, operation, and maintenance of the facilities herein provided, and to dispose of them to Federal, State, and local governmental agencies by lease, transfer, exchange, or conveyance upon such terms and conditions as will best promote their development and operation in the public interest: Provided, lands. ^^^ationai forest That all lands within the exterior boundaries of a national forest acquired for recreational or other project purposes which are not determined by the Secretary of the Interior to be needed for actual use in connection with the reclamation works shall become national forest lands: Provided further, That the Secretary of the Interior shall I
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