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
@amapanda This has led to me digging up a 5 year old changeset discussion and taking another stab at getting the loops out of this wetland area. https://www.openstreetmap.org/changeset/66725627#map=17/44.07445/-123.26166