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Public-images-osm logo.svg waterway = lock_gate
A gate of a lock Show/edit corresponding data item.
Rendering in OSM Carto
Lock gate node.svg
Group: waterways
Used on these elements
may be used on nodesmay be used on waysshould not be used on areasshould not be used on relations (except multipolygon relations)
Useful combination
Status: de facto

A  Lock is a device for raising and lowering boats between stretches of water of different levels on river and canal waterways.

How to map

Simply add two nodes node to the waterway at the points where the top/bottom gate is located and add the tag waterway=lock_gate to both of them. Direction of the waterway should be downstream (from top to bottom gate).

It is also possible to map exact location of lock gate using way way.

The mapping of a lock and its components is described on page lock=*.


Picture/Description Tags OSM Carto
Canal lock.svg two nodes with the tag:


1: waterway=lock_gate
2: waterway=lock_gate
3: natural=water
4: waterway=canal / river

See also

  • waterway=sluice_gate - A movable gate to control water flow
  • seamark:type=gate - Gate on a waterway (A structure that may be swung, drawn, or lowered to block an entrance or passageway.)
  • lock=* - for the lock basin (Marks a stretch of waterway bounded by lock gates, forming a lock)
  • Seamarks/Gates