English: Navigation on the Gulf Intracoastal Waterway (GIWW), where it intersects with Bayou Perot in Louisiana, USA. The view in this picture is to the south. The GIWW runs left–right across the picture. The bayou comes in from the left and enters Lake Salvador on the right. The bayou is the boundary between Jefferson Parish in the foreground and Lafourche Parish in the distance beyond the bayou.