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Public-images-osm logo.svg water = basin
Linz regenrückhaltebecken.jpg
An area of land artificially graded to hold water. Edit or translate this description.
Group: Water
Used on these elements
may be used on nodesshould not be used on waysmay be used on areasshould not be used on relations
Useful combination
See also
Status: de facto

An area of land artificially graded to hold water. Note that this definition includes also structures typically without water. Usually these features are made for man made water courses e.g. storm water, water treatment.

It is treated as synonymous to landuse=basin by many database users.

How to map

Draw as an area area along the outline of the basin.

Add natural=water and water=basin

and the type of basin:

Tags used in combination

  • name=<name of the basin>
  • basin=* - refines the type of the basin
  • intermittent=yes - If the presence of water is intermittent.

Possible tagging mistakes

Do not use this tag for land form (natural) basins e.g. the Amazon Basin. There are no tags (yet, 2018) in OSM for mapping such features.

If you know places with this tag, verify if it could be tagged with another tag.
Automated edits are strongly discouraged unless you really know what you are doing!

See also