78 STAT. ]
PUBLIC LAW 88-567-SEPT. 2, 1964
851
lands in private ownership in each county, as determined by the Secretary: Provided further, That no such payments shall be made which will reduce the credits or the payments to be made pursuant to contractual obligations of the United States with the Tulelake Irrigation District or the payments to the Klamath Drainage District as full reimbursement for the construction of irrigation facilities within said district, and that the priority of use of the total net revenues collected from the leasing of the lands described in this section shall be (1) to credit or pay from each revenues to the Tulelake Irrigation District the amounts already committed to such payment or credit; (2) to pay from such revenues to the Klamath Drainage District the sum of $197,315; and (3) to pay from such revenues to the counties the amounts prescribed by this section. SEC. 4. The Secretary shall, consistent with proper waterfowl management, continue the present pattern of leasing the reserved lands of the Klamath Straits unit, the Southwest Sump, the League of Nations unit, the Henzel lease, and the F r o g Pond unit, all within the Executive order boundaries of the Lower Klamath and Tule Lake National Wildlife Kefuges and shown in plate 4 of the report entitled "Plan for Wildlife Use of Federal Lands in the Upper Klamath Basin, Oregon-California," dated April 1956. Leases for these lands shall be at a price or prices designed to obtain the maximum lease revenues. The leases shall provide for the growing of grain, forage, and soilbuilding crops, except that not more than 25 per centum of the total leased lands may be planted to row crops. All other reserved public lands included in section 2 of this Act shall continue to be managed by the Secretary for waterfowl purposes, including the growing of agricultural crops by direct planting and sharecrop agreements with local cooperators where necessary. SEC. 5. The areas of sumps 1(a) and 1(b) in the Klamath project lying within the Executive order boundaries of the Tule Lake National Wildlife Refuge shall not be reduced by diking or by any other construction to less than the existing thirteen thousand acres. SEC. 6. I n carrying out the obligations of the United States under any migratory bird treaty, the Migratory Bird Treaty Act (40 Stat. 755), as amended, or the Migratory Bird Conservation Act (45 Stat. ^^ ^^^ '^°' 1222), as amended, waters under the control of the Secretary of the ^^ "^^ ^^^• Interior shall be regulated, subject to valid existing rights, to maintain sump levels in the Tule Lake National Wildlife Refuge at levels established by regulations issued by the Secretary pursuant to the contract between the United States and the Tulelake Irrigation District, dated September 10, 1956, or any amendment thereof. Such regulations shall accommodate to the maximum extent practicable waterfowl management needs. SEC. 7. The Secretary is hereby directed to complete studies that. Research studhave been undertaken relating to the development of the water '* resources and waterfowl management potential of the Clear Lake National Wildlife Refuge. The results of such studies, when com- g^esT'* *° ^°"' pleted, and the recommendations of the Secretary shall be submitted to the Congress. SEC. 8. The Secretary may prescribe such regulations as may be necessary to carry out the provisions of this Act. Approved September 2, 1964.
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