Tag:waterway=flow_control

waterway = 
Description
A flow control device on the waterway. Show/edit corresponding data item.
Group: waterways
Used on these elements
may be used on nodesmay be used on waysmay be used on areas (and multipolygon relations)should not be used on relations (except multipolygon relations)
See also
Status: in usePage for proposal

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Similar pages for structural reference: Tag:railway=tram, Tag:waterway=dock.

A flow control device on the waterway.