The Apalachicola River flows 107 miles from Jim Woodruff Dam to Apalachicola Bay and, formed by the meeting of the Chattahoochee and Flint Rivers at Lake Seminole, is Florida's largest river and a vital ecological and water resource with a long history of commercial, military, and recreational use. The U.S. Government's damming of the rivers' confluence in 1958 created the 37,500-acre Lake Seminole reservoir, used by people, waterfowl, and wildlife alike. Archaeologists call the Apalachicola "prehistoric Highway 1" because it was a major transportation route for Native Americans traveling between the Georgia mountains and the Gulf of Mexico. In the 19th and 20th centuries, today's River Landing Park was a major port facility where a tavern and warehouses served traffic arriving on paddlewheel steamboats. The river remains a popular place for fishing, paddling, and outdoor recreation, is designated a Florida Blueway, supports more than 131 species of fish, is an International Biosphere Reserve and one of six biodiversity hotspots in the United States, and provides water vital to the oyster beds of Apalachicola Bay.