From OpenStreetMap Wiki
Jump to navigation Jump to search
Public-images-osm logo.svg natural = shoal
An area of the sea floor which nears the sea surface and is exposed at low tide. Edit or translate this description.
Rendering in openstreetmap-carto
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
Useful combination
See also
Status: de factoPage for proposal


The natural=shoal tag is used to mark an area of the sea floor which nears the sea surface (literally, becomes shallow) and is exposed at low tide. This tag is used for distinct raised features like sand or gravel bars but not for tidal flats, i.e. larger flat tidal areas.

How to map


To map a shoal you can just draw a line closing on itself, marking the area area of the shoal and tag it natural=shoal. To map larger shoals you can use Relation:multipolygon with the same tag.

If known you can add the following tags:

Mapping caveats

This tag is not recommended for:

Example rendering

Rendering-area-beach.png Rendering-area-beach-gravel.png
natural=shoal + surface=sand natural=shoal + surface=gravel

See also