I've added a new feature to WaterwayMap.org: Loop/cycle detection!
It shows all places where `waterway`s (e.g. rivers) form a loop, and go around in a circle. Most of these are simple tagging mistakes. Please get mapping!
map: https://waterwaymap.org/loops/
#OpenStreetMap #WaterwayMapOrg #RiverMapping #QA
This tool, unlike the main WaterwayMap.org maps, takes the *direction* of the underlying OSM way into account. Simple rivers being split around a island won't be detected
@amapanda looking forward to this finding the canonical Charybdis