From US 17 west of the Ashley River in Charleston, or from the junction of SC 30 and SC 171, Folly Road, on James Island, go south on SC 171, Folly Road, until you reach Fort Johnson Road, which is about 2.5 miles south of the intersection with SC 30. Turn left (east) onto Fort Johnson Road and follow it for about 5 miles to its end.
Birds to look for
Lesser Scaup (w), Bufflehead (w), Common Goldeneye (w), Red-breasted Merganser (w), Red-throated Loon (w), Common Loon (w), Horned Grebe (w), Brown Pelican, Double-crested Cormorant, Osprey, Bald Eagle, Merlin (fall), Peregrine Falcon (fall), Ruddy Turnstone, Laughing Gull, Bonaparte's Gull (w), Ring-billed Gull, Herring Gull, Lesser Black-backed Gull (w), Great Black-backed Gull (w), Gull-billed Tern (s), Caspian Tern, Royal Tern, Sandwich Tern (s), Common Tern (spring, fall), Forster's Tern, Least Tern (s)
This small site has a good overlook of Charleston Harbor. It is good for gulls and terns at any season, and has a fair number of fall migrant hawks, especially falcons.