Tag:waterway=milestone
 waterway =
|
 |
| Description |
|---|
A landmark of stone or metal to indicate the distance traveled along a watercourse. 
|
| Group: waterways |
| Used on these elements |
    |
| Useful combination |
| See also |
Status: de facto.svg.png){kind=icon}
|
| Tools for this tag |
|
Used for a distance marker along a waterway. The signs/markers with the river kilometres can be found left or right on the shore.
How to map
For the pole/board/marker stone on the shore
Draw a node and add the following:
waterway=distance=*orriver:waterway_distance=*– specified distance (in km);distance=*is used much more frequently (approx. 10:1)
Optional seamark tags:
seamark:distance_mark:category=pole/board/unknown_shapeseamark:type=distance_mark– OpenSeaMap/Distance_Marksseamark:distance_mark:distance=numberseamark:distance_mark:units=kilometres/hectometres
For the virtual kilometre point in the river
Place a point directly on the way 
that represents the waterway and add the following:
waterway=distance=*orriver:waterway_distance=*– distance (in km);distance=*is used much more frequently (approx. 10:1)
Optional seamark tags:
seamark:distance_mark:category=not_installed– virtual river kilometreseamark:type=distance_mark– OpenSeaMap/Distance_Marksseamark:distance_mark:distance=numberseamark:distance_mark:units=kilometres
Rendering on OpenSeaMap
The black circles are the milestones or the hectometre stone (hm1), the coloured circles are the virtual kilometre points.
See also
river:waterway_distance=*– An object's position along a waterway. The distance is measured from the spring.- A more detailed system for navigational use is defined in the Openseamap: OpenSeaMap/Distance_Marks
seamark:type=distance_markseamark:distance_mark:distance=numberseamark:distance_mark:units=kilometres
Similar tags
For “modern” milestones:
For “historic” milestones:
Gallery
-
Hundred-meter-mark at the river Rhine, near Karlsruhe/Germany -
Rheinkilometer 555 in St. Goarshausen -
Warta river waterway milestone near Poznań