In volume of water, what is the largest waterfall in Europe?

Gullfoss is certainly up there.

The average of water running down this waterfall is by 100 – 180 m³/s in the summertime and 50 – 110 m³/s in the wintertime. The highest flood measured was 2000 m³/s.

https://en.wikipedia.org/wiki/Gullfoss


Wiki says: Gullfoss is a waterfall located on the White River (Hvítá) in south central Iceland. Its name means the Golden Falls. The flow of the river from the regular rains and the glacial runoff, particularly in summer, makes Gullfoss the largest volume falls in Europe.

https://en.wikipedia.org/wiki/Gullfoss

I was looking for the Rhine Falls of Northern Switzerland.

https://en.wikipedia.org/wiki/Rhine_Falls

Dettifoss in Iceland (average 500 cubic metres per second) is bigger than Gullfoss. But the Rhinefalls seems to be bigger still.