Key:lock

A lock is a device used for raising and lowering boats, ships and other watercraft between stretches of water of different levels on river and canal waterways by raising and lowering the water level in a fixed chamber.

How to map

Small lock

1. Lock

Separate the way of the waterway=* at the two lock gates. Mark the newly created section with

• lock=yes
• lock_name=* - lock name
• waterway=canal

2. Gate of a lock

Place two nodes on the main flow line (waterway=*), where the upper and lower sluice gate is located and mark both

• waterway=lock_gate

3. Channel or river

Large lock

Example: West India Dock Entrance Lock

1. Lock

Separate the way of the waterway=* at the two lock gates. Mark the newly created section with

• lock=yes
• lock_name=* - lock name
• waterway=canal

2. Lock chamber

• Draw a surface area and add natural=water + water=lock.

3. Gate of a lock

• Draw the lock gate with a line and add waterway=lock_gate.

4. Channel or river

• waterway=canal
• waterway=river

5. Riverbank

• natural=water + water=canal or water=river

Tags used at the lock

• maxwidth=*
• maxlength=*
• draft=*
• lock_ref=*
• lock:height=*
• automated=yes
• self_service=yes
• opening_hours=*
• boat=*
• ship=*
• CEMT=*
• seamark:type=gate
  • seamark:gate:category=lock
  • seamark:gate:clearance_height=*
  • seamark:gate:clearance_width=*

Possible Tagging Mistakes

• waterway=lock

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

• waterway=boat_lift - A Boat lift
• waterway=dock - A dock
• waterway=security_lock - Flood barrier
• Marine Mapping
• OpenRiverboatMap
• https://wiki.openstreetmap.org/wiki/Seamarks/Gates#Other_Attributes
• lock on Wikipedia

Related terms: ‹ lock › ‹ lock gate › ‹ lock chamber ›