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Natural area · Breaux Bridge, Louisiana
Atchafalaya Basin
The largest river swamp in the United States, crossed by I-10 on a bridge of about 29 km. Boat tours depart from Henderson, near Breaux Bridge.
Illustrative images. The pictures in this guide are illustrations based on the real place, not photographs, and may differ from it.
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About Atchafalaya Basin
The Atchafalaya Basin is the flooded plain of the Atchafalaya River, a distributary of the Mississippi that flows to the Gulf of Mexico. With cypress forests, lakes, bayous and islands, it is the largest river swamp in the United States.
I-10 crosses the basin between Lafayette and Baton Rouge on an elevated bridge of roughly 29 km, one of the longest in the country, with water and trees visible on both sides. At the Butte La Rose exit, a state visitor center explains the region’s geography and wildlife with a film and exhibits.
Boat tours mainly depart from Henderson, a few kilometers from Breaux Bridge, and follow the channels through the cypress. Crawfish and catfish fishermen still work the basin, and the area’s Cajun culture developed in part along these waters.
Herons, bald eagles and alligators are among the animals commonly seen.
Before you go
Practical information
Cidade Turismo reviews its information regularly, but something may have changed. Check with the place before planning your trip.
How much time to set aside
Two to three hours, including the boat tour.
Best time
On mornings from March to May and October to November. In the hot months, the sun can be intense on boats without shade.
How to get there
The visitor center is at the Butte La Rose I-10 exit, about 20 km from Breaux Bridge. Boats leave from Henderson, about 15 km away.
Tip
Book the boat tour in advance and confirm departure on the day: water levels and weather can change schedules.
Official website
Get your questions answered
Frequently asked questions about Atchafalaya Basin
What is the Atchafalaya Basin?
The vast flooded bottomland of the Atchafalaya River, between Lafayette and Baton Rouge, covered with cypress and channels.
Where can I take a boat tour in the Atchafalaya?
Operators mainly depart from Henderson, near Breaux Bridge. Book in advance.
Can you see the Atchafalaya without a boat?
Yes, from the elevated I-10 bridge and the Butte La Rose visitor center, but a boat is needed to enter the channels among the cypress.