The words “district court” were substituted for “circuit court,” upon incorporation into the Code, the Circuit Courts being abolished by act Mar. 3, 1911, and their powers and duties transferred to the district courts by section 291 of that act.

2004—Subsec. (b). Pub. L. 108–293 substituted “$5,000 for a violation occurring in 2004; $10,000 for a violation occurring in 2005; $15,000 for a violation occurring in 2006; $20,000 for a violation occurring in 2007; and $25,000 for a violation occurring in 2008 and any year thereafter” for “$1,000”.

1983—Subsec. (a). Pub. L. 97–449 substituted “Secretary of Transportation” for “Secretary of War” wherever appearing. See Transfer of Functions note below.

1982—Subsec. (a). Pub. L. 97–322, § 108(c)(1)–(3), designated existing provisions as subsec. (a), provided for punishment of persons who shall “willfully” fail to comply with lawful orders, and struck out “shall be deemed guilty of a violation of said sections, and any persons who shall be guilty of a violation of said sections” after “sections 491 to 498 of this title,”.

Subsec. (b). Pub. L. 97–322, § 108(c)(4), added subsec. (b).

Functions, powers, and duties of Secretary of the Army [formerly War] and other offices and officers of Department the Army [formerly War] under this section to extent that they relate generally to location and clearances of bridges and causeways in navigable waters of United States transferred to and vested in Secretary of Transportation by Pub. L. 89–670, § 6(g)(6)(B), Oct. 15, 1966, 80 Stat. 941. Pub. L. 97–449 amended this section to reflect transfer made by section 6(g)(6)(B) of Pub. L. 89–670, and repealed section 6 (g)(6)(B).