Bayou Lafourche, in the State of Louisiana, between Canal Boulevard, city of Thibodaux, Parish of Lafourche, State of Louisiana, and the head of the bayou at its junction with the Mississippi River levee at the city of Donaldsonville, Parish of Ascension, State of Louisiana, is hereby declared to be a nonnavigable waterway of the United States within the meaning of the laws of the United States. The existing project for Bayou Lafourche, Louisiana, authorized by the Acts of August 30, 1935 (49 Stat. 1028) and July 14, 1960 (74 Stat. 480) is hereby deauthorized in the reach of Bayou Lafourche herein declared nonnavigable.

The right to alter, amend, or repeal this section is hereby expressly reserved.