The Alapaha River is a 202-mile-long river in southern Georgia and northern Florida in the United States. It is a tributary of the Suwannee River, which flows to the Gulf of Mexico. The Hernando de Soto expedition narrative records mention a "Yupaha" village they encountered after they left Apalachee, "the sound of which is suggestive of the Alapaha, a triā¦The Alapaha River is a 202-mile-long river in southern Georgia and northern Florida in the United States. It is a tributary of the Suwannee River, which flows to the Gulf of Mexico. The Hernando de Soto expedition narrative records mention a "Yupaha" village they encountered after they left Apalachee, "the sound of which is suggestive of the Alapaha, a tributary of the Suwanee." Another reference to a village of "Atapaha" "so closely resembles Alapaha that it is reasonable to suppose they are the same, and that the town was on the river of that name." John Reed Swanton's landmark Indian Tribes of North America places the Indian village of Alapaha near where the Alapaha River met the Suwanee, and also noted that an Indian village of "Arapaja" was 70 leagues from St. Augustine, Florida, probably on the Alapaha River. The Spanish mission of Santa María de Los Angeles de Arapaha was located along the lower reaches of the river from before 1630 until 1656.