how pronounce atchafalaya basin
A swamp in the Atchafalaya Basin. The Atchafalaya Basin, or Atchafalaya Swamp (pronounced ah-CHAF-fah-LIE-ah), is the largest wetland and swamp 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.