From OpenStreetMap Wiki
Jump to navigation Jump to search
Public-images-osm logo.svg water = moat
Caerlaverock Castle from the air.jpg
A deep, wide defensive ditch, normally filled with water, dug to surround a fortified habitation. Show/edit corresponding data item.
Group: water
Used on these elements
should not be used on nodesshould not be used on waysmay be used on areas (and multipolygon relations)should not be used on relations (except multipolygon relations)
Useful combination
See also
Status: in use

A  moat is a deep, wide defensive ditch, normally filled with water, dug to surround a fortified habitation.

How to Map

Draw the moat area outline. If there is an island which is completely surrounded by the moat, you may need to create a multipolygon relation.

Add natural=water and water=moat.

If there is a dam, waterway=dam is used to map it separately.

Tags used in combination

  • name=* - if the moat has a commonly used name
  • intermittent=yes - if the moat is intermittently filled with water

See also

  • defensive_works=moat - for (dry) defensive moats
  • natural=water + water=reservoir - A reservoir or an artificial lake that is used to store water. Usually formed by a dam over a natural water course, water then backs up into a natural valley or depression.
  • landuse=basin or water=basin - an area of land artificially graded to hold water.
  • water=lake - for a natural or semi-natural lake
  • water=reflecting_pool - A reflecting pool: a water feature found in gardens, parks, and at memorial sites. It usually consists of a shallow pool of water, undisturbed by fountain jets, for a calm reflective surface.
  • water=canal - the water area of a canal, a man-made channel for water. Contains a waterway=canal way inside.
  • water=ditch - the water area of a ditch, a simple narrow artificial waterway, used to drain nearby land. Contains a waterway=ditch way inside.
  • water=drain - the water area of a drain, an artificial waterway used for carrying superfluous water, lined with concrete or similar. Contains a waterway=drain way inside.
  • castle_type=* - for different types of castles which may be (partially) surrounded by a moat.