Key:lock_ref

Description
The reference of a lock Show/edit corresponding data item.
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)
Requires
Useful combination
Status: in use

The tag =* is used to represent the reference of a lock (waterway=canal + lock=yes or waterway=river + lock=yes). (See lock=* for a diagram of lock tagging.)