33 U.S.C. § 701b–3: Examinations and surveys; availability of appropriations

Funds heretofore or hereafter appropriated for construction and maintenance of flood-control works by the Department of the Army shall be available for expenditure by the Department of the Army in making examinations and surveys for flood control heretofore or hereafter authorized, or in preparing reports in review thereof as authorized by law, in addition to funds heretofore authorized to be expended for such purposes by the Department of the Army.