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Show Ill include a "due regard for wildlife conservation,"20* Congress in 1946 required that whenever waters are impounded, di- verted or otherwise controlled by federal agencies, "adequate provision consistent with the primary purposes" must be made for wildlife resources.205 Similarly, in the management of ex- isting facilities administered by the Army Engineers in the upper Mississippi River, including locks, dams, and pools, the Department of the Army was directed in 1948 to give full con- sideration to the needs of fish and other wildlife resources "without increasing additional liability to the Government, and, to the maximum extent possible without causing damage to levee and drainage districts, adjacent railroads and high- ways, farm lands, and dam structures, shall generally operate and maintain pool levels as though navigation was carried on throughout the year."2Oe It has already been pointed out that Congress in 1946 made conditional provision for the design and construction of dams with a view to their use as supports for public highway bridges.207 Subject to the same conditions, the statute con- templates a like use in the case of dams already constructed. It should also be noted that the Secretary of the Army has authority to transfer or convey to states or political subdi- visions thereof, title to bridges constructed or acquired in con- nection with navigation or flood-control projects.208 With respect to specified projects in the West, Congress in recent authorizations has expressly subordinated navigation use of waters to beneficial consumptive use. Since 1944, all river and harbor and all flood control acts have provided that the use for navigation, in connection with the operation and maintenance of works therein authorized for construction, of waters arising in states lying wholly or partly west of the ninety-eighth meridian shall be only such use as does not con- 204 Act of June 20,1938, § 1, 52 Stat. 802, 33 TJ. S. C. 540. *» Act of August 14,1946, § 3, 60 Stat. 1080,1081,16 U. S. C. 663. See also infra, pp. 329-330. "• Act of March 10, 1934, 48 Stat. 401, as added June 19, 1948, 62 Stat. 497,16 TJ. S. C. 665a (Supp. III). 207 Act of July 29, 1946, 60 Stat. 709, 23 U. S. C. 64. See supra, pp. 94-95. aM Act of May 17,1950, § 109,64 Stat. 163, -. 911611-51------9 |