inside of the lake is the river "waterway = river), but outside og the lake it's "waterway = stream)

This is not correct.
but this is a big problem in most of the lakes here or in alaska

please all waterways as stream

best thing will be, when the line in the lake get an attribute like "in lake"

inside of the lake is the river "waterway = river), but outside og the lake it's "waterway = stream)

This is not correct.
but this is a big problem in most of the lakes here or in alaska

please all waterways as stream

best thing will be, when the line in the lake get an attribute like "in lake"

ist der Turm wirklich als Shelter zu definieren? Ein Turm ist ja keine Hütte

here are two different polygon for the same salt-lake
ids
551346335
284143307
only the attributation is different and also just one is shown in the osm map

what is the correct one? please delete the second one.

Standort der Schule überprüfen ... das zugehörige Gymnasium liegt im Gebäude, der Point hier vor dem Gebäude auf der Straße