The Lake Harney Wilderness Area (LHWA) is an approximately 300-acre property that is located along the St. Johns River at the northwest shore of Lake Harney. This site is home to an historic crossing of the Florida East Coast Railway, Native American shell middens, several bald eagle nests, oak hammocks and mixed hardwood swamps. This site also contains extensive floodplain marshes associated with Lake Harney which serve as important feeding grounds for wading birds and as a natural filter improving water quality.