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Show 623 National Forests.-"Securing favorable conditions of water flows" is one of the limited purposes for which national forests may be established, and Congress has directed that national forest areas be administered for that purpose.698 Ad- ministration is vested in the Secretary of Agriculture.699 Further recognition has been accorded the use of land for stream regulation through authority for the acquisition of land for management as a part of national forests. The Secretary of Agriculture is authorized to acquire such "forested, cut-over, or denuded lands within the watersheds of navigable streams as in his judgment may be necessary to the regulation of the flow of navigable streams," after an examination by the Secretary of Agriculture, in cooperation with the Director of the Geological Survey, has shown that the control of such lands will promote or protect the navigability of streams.700 Other Forests and Woodlands.-Some forests and wood- lands are also administered by the Bureau of Land Manage- ment in the Department of the Interior.701 These include the revested Oregon and California Railroad and reconveyed Coos Bay wagon road grant lands, which Congress has provided shall be managed for permanent forest production, on the principle of sustained yield, for the purposes, among others, of protecting watersheds, regulating stream flows, and providing recreational facilities.702 National Parks and Wildlife Refuges.-The foregoing statutes are express measures for the conservation of land in aid of water-resource development. The same object may be aided though not expressly recognized by the purposes for which the national parks and the wildlife refuges are estab- lished and administered. National parks are established to conserve the scenery and the natural and historic objects and 698 Act of June 4,1897, § 1, 30 Stat 11, 35,16 U. S. C. 475. See also supra, pp. 354-358. 699 Act of February 1,1905, § 1, 33 Stat. 628,16 U. S. C. 472. 700 Act of March 1, 1911, 36 Stat. 961, as amended, 16 U. S. C. 515, 516. Acquisition for production of timber is also permissible. See supra, p. 356. 701 See supra, pp. 358-359. 7W Act of August 28,1937, 50 Stat. 874; see supra, n. 42, p. 359. &11611-51------sU |