It is declared to be the policy of the Congress that the following provisions shall be observed:
No project or any modification not authorized, of a project for flood control or rivers and harbors, shall be authorized by the Congress unless a report for such project or modification has been previously submitted by the Chief of Engineers, United States Army, in conformity with existing law.
[Sept. 3, 1954, ch. 1264], title II, § 202, [68 Stat. 1256].)