Three Rivers State Park is located in Florida, very close to Georgia. The Flint and Chattahoochee rivers combine to form Lake Seminole above the Jim Woodruff Dam. Below the dam, the waters become the Apalachicola River, which flows into Apalachicola Bay, and eventually, the Gulf of Mexico. The name of the park is a tribute to these three rivers. Three Rivers became a Florida state park in 1955.