Bayou Lafourche, originally called
Chetimachas River or
La Fourche des Chetimaches, (the fork of the
Chitimacha), is a
bayou in southeastern Louisiana,
United States, that flows into the
Gulf of Mexico. The bayou is between
Louisiana Highway 1 on the west, and
Louisiana Highway 308 on the east and is known as "the longest Main Street in the world." It flows through parts of
Ascension,
Assumption, and
Lafourche parishes. Today, approximately 300,000 Louisiana residents drink water drawn from the bayou.