84
STAT.]
PUBLIC LAW 91-389-AUG. 28, 1970
unit shall be subject to the Federal reclamation laws (Act of June 17, 1902, 82 Stat. 388, and Acts amendatory thereof or supplementary thereto). The principal features of the Narrows unit shall include the Narrows Dam and Reservoir, fish hatchery and rearing ponds, acquisition and development of the existing Jackson Lake Reservoir, including some rehabilitation of Jackson Lake Dam, for public outdoor recreation and fish and wildlife enhancement, and other necessary works and facilities to effect its purpose. The Narrows unit shall be operated in such manner that identifiable return flows of water will not cause the South Platte River to be in violation of water quality standards established by the State of Colorado and approved by the Secretary of the Interior pursuant to the Water Quality Act of 1965 (79 Stat. 903). SEC. 2. The conservation and development of the fish and wildlife resources and the enhancement of recreation opportunities in connection with the Narrows unit shall be in accordance with provisions of the Federal Water Project Recreation Act (79 Stat. 213). SEC. 3. The Narrows unit shall be integrated physically and financially with the other Federal works constructed under the comprehensive plan approved by section 9 of the Flood Control Act of December 22, 1944, as amended and supplemented: Provided, That repayment contracts for the return of construction costs allocated to irrigation will be based on the irrigator's ability to repay, as determined by the Secretary: Provided further, That the terms of such contracts shall not exceed 50 years. SEC. 4. For a period of ten years from the date of enactment of this Act, no water from the unit authorized by this Act shall be delivered io any water user for the production on newlj^ irrigated lands of any basic agricultural commodity, as defined in the Agricultural Act of ) 949, or any amendment thereof, if the total supply of such commodity for the marketing year in which the bulk of the crop would normally be marketed is in excess of the normal supplv as defined in section 301 (b)(10) of the Agricultural Adjustment Act of 1938, as amended, unless the Secretary of Agriculture calls for an increase in production of such commodity in the interest of national security. SEC. 5. To the extent that project water constitutes a supplemental irrigation supply, the provisions of the Act of June 16, 1938, relating to the Colorado-Big Thompson project in Colorado are hereby made equally applicable to the Narrows unit. SEC. 6. The interest rate used for purposes of computing interest during construction and interest on the unpaid balance of the capital costs allocated to interest-bearing features of the project shafi 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 date of issue. SEC. 7. There is hereby authorized to be appropriated for construction of the Narrows unit as authorized in this Act the sum of $68,050,000 (based upon Jaimary 1969 prices), plus or minus such amounts, if aiiy, as may be justified by reason of ordinary fluctuations in construction costs as indicated by engineering costs indexes applicable to the types of construction involved herein. There are also authorized to be appropriated such additional sums as may be required for operation and maintenance of the unit. Approved August 28, 1970.
sai 43 USC 371 and note. Recreation, fish and wildlife facilities,,
33 USC 466 note.
16 USC 460/..12 note. Integration with other Federal works. Repayment contracts, terms.
Water deliveiy, restriction.
63 Stat. 1051. 7 USC 1421 note. 62 Stat. 1251. 7 USC 1301.
52 Stat. 764. 43 USC 386. Interest rates.
Appropriations.
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