Lake Cynthia   Be the first to submit input for Lake Cynthia. If you have info on Lake Cynthia, Barnwell County, South Carolina please submit it here to improve this web site.          These outdoors activities are available near Lake Cynthia.   Public Lands Near Lake Cynthia: Barnwell State Park, South Carolina, 2 miles away Aiken State Natural Area, South Carolina, 19 miles away Lake Warren State Park, South Carolina, 29 miles away Congaree Swamp National Monument, Hopkins - SC, 45 miles away   Camp Grounds Near Lake Cynthia: Barnwell State Park, Blackville, 3 miles away   Hotels Near Lake Cynthia: Days Inn Barnwell, Barnwell, 10 miles away Days Inn Hampton, Hampton, 28 miles away Econo Lodge Inn & Suites Downtown, Orangeburg, 29 miles away Jameson Inn Orangeburg, Orangeburg, 30 miles away Super 8 Orangeburg, Orangeburg, 30 miles away