Science Fair Project Encyclopedia
- This article is about marsh, a type of wetland. For other uses of the word marsh see Marsh (disambiguation).
In geography, a marsh is a type of wetland, featuring grasses, rushes, reeds, typhas, sedges, and other herbaceous plants (possibly with low-growing woody plants) in a context of shallow water. A marsh is different from a swamp, which is dominated by trees rather than grasses and low herbs. The water of a marsh can be fresh, brackish, or saline. Coastal marshes may be associated with estuaries and along waterways between coastal barrier islands and the inner coast.
Constructed wetlands featuring surface-flow design are usually in the form of a marsh.
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