Water polygons

Polygons for oceans and seas. These polygons are split into smaller overlapping chunks that are easier and faster to work with.


The data has been derived from OpenStreetMap ways tagged with natural=coastline. Ways are assembled into polygons and then split. Some errors in the OSM data are repaired in the process. Learn more about the coastline processing...

This dataset only contains bodies of water bordered by ways tagged natural=coastline, it does not contain lakes, reservoirs, etc. tagged with natural=water etc.

Where polygons have been split they overlap slightly to help avoiding rendering artefacts at the seams.


See also

Land polygons · Coastlines


Download Format: Shapefile, Projection: WGS84
(Large polygons are split)
Download Format: Shapefile, Projection: Mercator
(Large polygons are split)
Download Format: Shapefile, Projection: Mercator
(Simplified polygons, use for zoom level 0-9)


Data is copyright OpenStreetMap contributors and available under the ODbL. More...


The coastline in OpenStreetMap is often broken. The update process will try to repair it, but this does not always work. If the OSM data can't be repaired automatically, the data here will not be updated.