Wetland water How do coastal wetlands hold and release water?
Follow rain, tides, groundwater, soil pores, channels, vegetation, storm surge, restoration, and measurement through coastal-wetland hydrology.
What you’ll learn
- Water arrives from many directionsIdentify rain, rivers, groundwater, tides, and storm surge as inputs in a coastal wetland water budget.Wetlands are connected parts of watersheds and coasts with several changing water sources.
- The ground stores waterExplain how pools, soil pores, roots, water tables, and evapotranspiration control wetland storage.Storage includes visible water and hidden water whose capacity changes with soil and vegetation.
- Channels move waterConnect channels, vegetation, reefs, and seagrass to the speed, distribution, and direction of coastal water.Wetland structure slows and redirects water without stopping exchange.
- Storms test the water budgetReason about storm surge, waves, starting conditions, drainage, and landscape context when evaluating flood protection.Storm protection is conditional on event size, storage space, elevation, roughness, and connected landforms.
- People change the pathwaysEvaluate how barriers, restoration, dredging, and urban runoff alter wetland water pathways.Good management restores measurable processes and tracks where water goes before and after intervention.
Questions this course answers
Which set lists possible coastal wetland water sources?
Coastal wetland water budgets combine atmospheric, surface, subsurface, tidal, and storm inputs.
Put this water-budget investigation in order.
Start with pathways, then measure timing, quantify the terms, and compare conditions.
Why can a wetland that looks dry still contain important water?
Visible surface water is only one part of wetland storage.
Match the feature to its water effect.
Different features affect different parts of the wetland water budget.
Why can a broad vegetated marsh reduce a downstream flood peak?
The water is redistributed and delayed, not magically removed.
Tidal creeks distribute water across a marsh and help it ___ when the tide falls.
Channels carry water in and out as the tide rises and falls.
Grounded in trusted sources
- U.S. Environmental Protection Agency, About Coastal Wetlands, https://www.epa.gov/wetlands/about-coastal-wetlands
- U.S. Geological Survey, Wetlands and Estuaries, https://www.usgs.gov/science/science-explorer/coasts/wetlands-and-estuaries
- U.S. Geological Survey, Technical Aspects of Wetlands: Wetland Hydrology, Water Quality, and Associated Functions, https://water.usgs.gov/nwsum/WSP2425/hydrology.html
- U.S. Environmental Protection Agency, Basic Information about Wetland Restoration and Protection, https://www.epa.gov/wetlands/basic-information-about-wetland-restoration-and-protection
- NOAA, Wetland Benefits, https://coast.noaa.gov/states/fast-facts/wetland-benefits.html
- NOAA Fisheries, Coastal Wetland Habitat, https://www.fisheries.noaa.gov/national/habitat-conservation/coastal-wetland-habitat
- Wikimedia Commons MediaWiki API image records, https://commons.wikimedia.org/w/api.php
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