Headwater Swamp Wooded, riverine systems along first order streams. These include hardwood dominated communities with soil that is moist most of the year. Channels receive their water from overland flow and rarely overflow their own banks. Hardwood Flat Poorly drained interstream flats not associated with rivers or estuaries. Seasonally saturated by high water table or poor drainage.
Species vary greatly but often include sweet gum and red maple.
Pine Flat Palustrine, seasonally saturated pine communities on hydric soils that may become quite dry for part of the year. Generally occur in flat or nearly flat areas that are not associated with a river or stream system. Usually dominated by loblolly pine. This category does not include managed pine systems. This wetland category may also contain non-managed pine forests occurring on hydric soils.