40 U.S.C. § 9504: Reports

As superintendent of the Washington Aqueduct, the Chief of Engineers annually shall submit to the Secretary of the Army, within nine months after the end of the fiscal year, a report of the Chief of Engineers’ operations for that year and a report of the condition, progress, repairs, casualties, and expenditures of the Washington Aqueduct and other public works under the charge of the Chief of Engineers.