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Available languages — Key:wetland
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Public-images-osm logo.svg wetland
Osm element key.svg
Type of wetland Edit or translate this description.
Group: Natural
Used on these elements
should not be used on nodesshould not be used on waysmay be used on areasshould not be used on relations
Documented values: 12
Useful combination
Status: approvedPage for proposal


You can use this key to refine elements tagged with natural=wetland.

"Main wetland types include swamps, marshes, bogs and fens. Sub-types include mangrove, carr, pocosin, and varzea." See wetland on Wikipedia


Types of wetland
Tag Rendering Description Picture
Open habitats
wetland=marsh Natural wetland marsh.png Marshes are periodically saturated, flooded, or ponded with water and characterized by herbaceous (non-woody) vegetation adapted to wet soil conditions. Marshes are further characterized as tidal marshes and non-tidal marshes Cepkeliu marsh.jpg
wetland=reedbed Natural wetland reed.png Reed-bed, an inundated area dominated by certain tall non-woody plants (reeds, bulrushes). Schweinesand.jpg
wetland=saltmarsh Saltmarsh water.png Coastal marshes, exposed to tidal inundation with sea water, therefore characterised by herbaceous plants with special adaptations to saline environments. Ditches/channels in these marshes should be tagged with waterway=ditch. Grid-like ditches in saltmarshes were often dug to drain standing water pools in the marsh and therefore eliminate salt marsh mosquitoes. [1] Culbin Salt Marsh - - 185128.jpg
wetland=wet_meadow Natural wetland marsh.png A semi-wetland meadow which is saturated with water throughout much of the year. Can be caused by poor drainage or the receipt of large amounts of rainwater or melted snow or in riparian zones. Vessertal wiesenknoeterich.jpg
Forested habitats
wetland=swamp Natural wetland swamp.png An area of waterlogged forest, with dense vegetation. Cypresses.jpg
wetland=mangrove Natural wetland mangrove.png Mangrove swamps are coastal wetlands characterized by salt-tolerant trees, shrubs, and other plants growing in brackish to saline tidal waters Mangroves in Puerto Rico.JPG
wetland=bog Natural wetland bog.png Bogs are peat-filled depressions that receive their water and nutrients from rainfall. They are frequently covered in shrubs rooted in the sphagnum moss and peat. EE-Lahemaa-Bagno Viru.jpg
wetland=fen Natural wetland marsh.png Fens are groundwater-fed peatforming wetlands covered by grasses, sedges, reeds, and wildflowers. Wicken-Fen-Hide.jpg
wetland=string_bog Natural wetland bog.png A String bog or Strong mire is a bog consisting of slightly elevated ridges and islands, with woody plants, alternating with flat, wet sedge mat areas. String bogs occur on slightly sloping surfaces, with the ridges at right angles to the direction of water flow. Seney National Wildlife Refuge - 1967 (5405011148).jpg
Saltwater habitats
wetland=tidalflat Natural wetland water.png Tidally inundated areas of bare mud, sand or similar sediments. See mudflat on Wikipedia Stewart Island Oban Mudflats.jpg
wetland=saltern Natural wetland saltern.png Saline for salt production Saline Salzgewinnung Bangkok.jpg