Hydrogeomorphic Classes of Wetlands Showing Associated Dominant Water Sources, Hydrodynamics, and
Examples of Subclasses.
| Hydrogeomorphic class |
Dominant water Source |
Dominant hydrodynamics |
Examples of subclass Eastern USA |
Examples of subclass Western USA |
| Riverine |
Overbank flow from channel |
Unidirectional, horizontal |
Bottomland hardwood forests |
Riparian forests |
| Depressional |
Return flow from groundwater and interflow |
Vertical |
Prairie potholes marshes |
California vernal pools |
| Slope |
Return flow from groundwater |
unidirectional, horizontal |
Fens |
Montane seeps |
| Flats (mineral soil) |
Precipitation |
Vertical |
Wet pine flatwoods |
Playas |
| Flats (organic soil) |
Precipitation |
Vertical |
Everglades |
Peat bogs, portions of peat bogs |
| Fringe (Estuarine) |
Overbank flow from estuary |
Bidirectional, horizontal |
Chesapeake Bay marshes |
San Francisco Bay marshes |
| Fringe (Lacustrine) |
Overbank flow from lake |
Bidirectional, horizontal |
Great Lakes marshes |
Flathead Lake marshes |
