The intersection of Bayou Lafourche and the Gulf Intracostal Waterway at Larose, Louisiana. View is to the east-southeast. The bayou runs off towards the Gulf at the top. The waterway crosses the picture left–right. The U. S. Army Corps of Engineers has installed a floodgate on the bayou, visible at center.

Bayou Lafourche is a bayou in southeastern Louisiana, United States, that flows into the Gulf of Mexico. A bayou (pronounced oʊ or uː is a small slow-moving Stream or creek or a lake or pool ( bayou lake) that lies in an abandoned channel of a stream The State of Louisiana ( or, État de Louisiane, pronounced) is a state located in the southern region of the United States of America The United States of America —commonly referred to as the The Gulf of Mexico ( Spanish: Golfo de México) is the ninth largest Body of water in the world The first settlements of Acadians in southern Louisiana were near Bayou Lafourche and Bayou des Ecores which led to a close association of the bayou with Cajun culture. This article is about the Acadian people and culture The Acadians (Acadiens are the descendants of the seventeenth-century French Cajuns ('keʒən les Cadiens are an Ethnic group mainly living in Louisiana, consisting of the descendants of Acadian exiles and peoples of other Today, approximately 300,000 Louisiana residents drink water drawn from the bayou. The name Lafourche is from the French word for "fork", and alludes to the bayou's large outflow of Mississippi River water. French ( français,) is a Romance language spoken around the world by 118 million people as a native language and by about 180 to 260 million people It was formerly a Mississippi River outlet, but was dammed at Donaldsonville in 1905. The Mississippi River is the second longest River in the United States, with a length of from its source in Lake Itasca in Minnesota to Donaldsonville is a city in and the Parish seat of Ascension Parish, Louisiana, United States, along the west bank of the Mississippi The dam cut off nourishment and replenishment of a huge wetland area of central Louisiana. It changed the formerly flowing bayou into a stagnant ditch.

A project to reconnect Bayou Lafourche to the Mississippi River at Donaldsonville is currently under design. The plan is to use a control structure to regulate the water discharge. The purpose is to mitigate the accelerated land loss that followed the interruption of the distributary flow, and also to improve water quality in the bayou.

The bayou is paralleled by Louisiana Highway 1 on the west, and on the east by Louisiana Highway 308. Louisiana Highway 1 ( LA 1) is a State highway in Louisiana that serves the following parishes (from south to north Jefferson

The film Southern Comfort is set in the Bayou Lafourche. Southern Comfort ( 1981) is an American Drama film directed by Walter Hill, working from a script by Hill longtime collaborator