The Secretary, in accordance with any agreements entered into pursuant to section 757a(a) of this title, is authorized (1) to conduct such investigations, engineering and biological surveys, and research as may be desirable to carry out the program; (2) to carry out stream clearance activities; (3) to construct, install, maintain, and operate devices and structures for the improvement of feeding and spawning conditions, for the protection of fishery resources, and for facilitating the free migration of the fish, and for the control of the sea lamprey; (4) to construct, operate, and maintain fish hatcheries wherever necessary to accomplish the purposes of sections 757a to 757f of this title; (5) to conduct such studies and make such recommendations as the Secretary determines to be appropriate regarding the development and management of any stream or other body of water for the conservation and enhancement of anad­romous fishery resources and the fish in the Great Lakes and Lake Champlain that ascend streams to spawn: Provided, That the reports on such studies and the recommendations of the Secretary shall be transmitted to the States, the Congress, and the Federal water resources construction agencies for their information: Provided further, That sections 757a to 757f of this title shall not be construed as authorizing the formulation or construction of water resources projects, except that water resources projects which are determined by the Seretary 1

to be needed solely for the conservation, protection, and enhancement of such fish may be planned and constructed by the Bureau of Reclamation in its currently authorized geographic area of responsibility or by the Corps of Engineers, or by the Department of Agriculture, or by the States, with funds made available by the Secretary under sections 757a