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Atchafalaya Basin — butterfly
recreation area

Atchafalaya Basin

Louisiana · LA

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We display cached information from agency feeds. Hours, fees, permits, closures, fire restrictions, and conditions change without notice. Outdoors is not the permitting authority. Confirm current conditions for this park using the links above before you go — you are responsible for compliance. Last verified by us: Jun 12, 2026. Our copy is more than a month old — please reconfirm with the agency before relying on it.Spot an error in our data?

About

The Atchafalaya Basin, or Atchafalaya Swamp, is the largest swampy wetland in the United States. Located in south central Louisiana, it is a combination of wetlands and river delta area where the Atchafalaya River and the Gulf of Mexico converge. The river stretches from near Simmesport in the north through parts of eight parishes to Morgan City in the south.

Source: Wikipedia — text licensed CC BY-SA 4.0. Verify alerts and operational details with the managing agency below.

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