[Tagging] Use of oneway=yes on waterways

LeTopographeFou letopographefou at gmail.com
Sat Sep 17 12:06:23 UTC 2016


According to the waterway=stream wiki page 

    /If a flow exists, the direction of the way must be downstream (i.e.
    the way direction follows the flow)/

As of today there is a very small percentage of streams (17593 ways 
according to taginfo, 0.23%) with oneway=yes.

Is there any undocumented purpose? Is it ok and safe to delete 
oneway=yes tags for streams?

The same question can apply to drains, ditches, canals...



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