Tag:waterway=portage
 waterway = portage
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Virtual extension of a portage to its waterbodies centerline  
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| Group: Waterways |
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| Status: in use |
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A 
Portage is a location equipped with suitable aids to allow boats and other watercraft to be transported between two waterbodies when connection by water is not possible (for instance weirs, rapids, or just intervening land).
waterway=portage describes a virtual extension from the end of the actual portage to the waterbodies centerline. The portage itself (the rail or pulley system) should be defined via the tag canoe=portage.
How to map
Set a way 
along the portage connecting it at each end to the two waterbodies. Add the tag canoe=portage.
Connect the end of the portage (the rails or pulley system) to the waterbodies' center line with the tag waterway=portage to add the possiblity of routing along this connection.
See Also
canoe=portage - physical portage on-land which reaches into the water