congressional approval

congressional 'approval' without more cannot be taken, we think, to indicate in this case more than a legislative finding that the proposed projects, no matter by whom they may be built, are desirable and consistent with congressional standards for the ordered development of the Nation's water resources. Such a finding has meaning in conveying the congressional purpose and expressing a congressional attitude. Concretely it means that Congress has adopted a basic policy for the systematic development of a river basin.