Port Fourchon and inland waterways around Bayou Lafourche have reopened after the passage of Hurricane Isaac.
The bayou is open to commercial vessels from Leeville to the entrance of Belle Pass.
Authorities are asking vessel captains to use extreme caution because buoys and other navigation aids may have been moved by the force of Isaac's wind and storm surge.
Bayou Lafourche north of Leeville remains closed as does the Gulf Intracoastal Waterway to the east.