text: by the way, i followed the archive bing clarity imagery upstream past the point where it ceases to appear on osm, and am *soooo* tempted to continue tracing it and leave more bridges to be added.
  
  it forks into two roughly equal-size streams at which point i don't know what name applies; one part quickly disappears underground, the other can be followed for a spell until i can no longer make it out under the trees.
  
  by the way, if the new iD editor validation caused you to open these three Notes, good job to ask here rather than guessing.  would that more mappers follow your example...