The portion of the waterway in the city of New Bedford and the towns of Fairhaven and Acushnet lying north of the Coggeshall Street Bridge (north 41 degrees 31 minutes 00 seconds), is declared to be a nonnavigable water of the United States within the meaning of the Constitution and laws of the United States. Any project heretofore authorized by any Act of Congress, insofar as such project relates to the above-described portions of the Acushnet River section of New Bedford and Fairhaven Harbor, is hereby abandoned.

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