Hello there!
I notice here that you have extendeded the Shannon to flow much father into the Atlantic than before. Specifically this way ( https://www.openstreetmap.org/way/1446958027#map=12/52.5283/-9.8407). But there's an unnamed gap upstream of that <https://www.openstreetmap.org/way/1446958026#map=13/52.57383/-9.70054>. So the whole Shannon river name is interrupted. I also notice that you have extended the Feale to join the Shannon <https://www.openstreetmap.org/way/1446958030#map=14/52.52001/-9.71398>.

I think this is all a bit strech to say that the Feale is a tributary of the Shannon... I know the end point of the shannon is contested, but I think this is a bit of a strech. 🙂

I hope you don't mind, but I've brought the shannon back a bit in <https://www.openstreetmap.org/changeset/174153725#map=11/52.5749/-9.6471>