hello community!
This MapRoulette Challenge has still pending tasks. Do you would like to continue solving them or can we move to our internal editors? @Matija_Nalis@Janjko you made some tasks, what do you think, what are your impressions?
Preface: I’m personally not a big fan of tasks for fixing buildings in OSM (both completely missing and slightly incorrect geometry which seems to be mostly the case here), as we literally have a zillion of such problems in Croatia, and the there are many more important things that are missing in OSM Croatia (from missing roads / track to missing or obsolete POIs). So, I’ve tried this MapRoulette challenge out mostly out of curiosity.
Feedback: That being said, it was hard. The best aerials we have (DGU Croatia 2021+2022) are not detailed enough to even spot the streams in most cases, and they are often thin, covered by vegetation (or even under the woods), and in many cases are marked as intermittent=yes. So one would be unlikely to spot waterway directly. The ones I did manage to fix were mostly with help of DGU TK25 / TK25new topographic maps which indicated where the streams are, or where the offset of building was obvious (even if exact location/precision of the waterway was uknown).
TL;DR - the challenge was too hard, and provided too little benefit, i.e. too much time wasted. I’m happy with you taking it over and moving/resizing buildings around (or even waterways if they are visible), but I’d highly advise against removing waterways which seem not be visible from the aerials (at best add fixme=* on them)