Is there a way of finding *waterways* which have been deleted during the redaction process? (usually waterway=stream) I have been checking waterways using OSMi, and have found a lot of them deleted by the redaction bot during the license change in 2012. Now, this means that the water network is disjointed in the map; unlike highways, this has gone unnoticed for so long that I can't find any post-redaction QA tools. So: An example to clarify: - 2012: situation out in the terrain: Stream A flows into Stream B; Stream B flows into River C. - situation in OSM: everything mapped, but the mapper of Stream B did not agree with the new license. - the redaction bot cometh, and deletes Stream B (this is there expected behavior, and I'm not asking about this) - 2014: in the terrain, Stream A still flows into Stream B, which flows into River C - in the map, Stream A now does not flow into anything, it just ends; it is not connected in any way with River C - I want to find these situations and resurvey, so that OSM mirrors reality again :) - This seems to be a way of finding *waterways* which have been deleted during the redaction process? (usually waterway=stream)very common occurence around [50N,15E], so I'm looking for something more robust than "just look at the map and see if it seems weird" - (Some sort of graph traversal comes to mind?)

I have been checking waterways using OSMi, and have found a lot of them deleted by the redaction bot during the license change in 2012. Now, this means that the water network is disjointed in the map; unlike highways, this has gone unnoticed for so long that I can't find any post-redaction QA tools. So: is there a way of finding *waterways* which have been deleted during the redaction process? (usually waterway=stream)