| Term | Definition |
|---|
| Wetlands | Lands which, due to geological or ecological factors, have a natural supply of water—either from tidal flows, flooding rivers, connections with groundwater. |
| Marsh | An inland area inundated with 1–6 feet (33–200 cm) of water, containing a variety of perennials (mostly grasses), forbs (flowers), and bushes, rather than trees, as in swamps. |
| Swamps | Swamps are slow moving streams, rivers or isolated depressions that host trees and some shrubs. |
| Bogs | A peat-accumulating wetland. |
| Prairie potholes | A wetland area found in the northern Great Plains. These shallow or bowl-like depressions have variable wetness. |
| riparian marsh | Marshes serve two ecological roles: to absorb excess water when river levels are high and to release water when river levels are low. These balancing forces help prevent floods and droughts. |
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