Altamaha River has the Toombs County in the southern floodplain of the river's first few miles while the Ohoopee River joins the Altamaha from the north while having the Big Hammock Wildlife Management Area and Big Hammock Natural Area along the Altamaha at the Ohoopee confluence.
Bullard Creek Wildlife Management Area occupies the southern floodplain of the river's first few miles, after which the river marks the boundary between Toombs County to the north and Appling County to the south. On the north side, Toombs County gives way to Tattnall County, in which the Ohoopee River joins the Altamaha. The Big Hammock Wildlife Management Area and Big Hammock Natural Area are located along the Altamaha at the Ohoopee confluence. 
