33 U.S.C. § 549
Section, act Mar. 3, 1899, ch. 425, §7, 30 Stat. 1150, provided that Chief of Engineers, in submitting his annual reports to Congress on river and harbor improvements, report on deterioration in improvements, estimate cost of repairing or rebuilding such works, and recommend discontinuance of appropriations for any works deemed unworthy of further improvement.