The Rába section at Ivánc is extremely problematic in terms of flood protection. The survey chart here explains this: you can see that the Rába is in a river bed that is about two meters higher than the Vörös Creek. A few kilometers further down, it actually merges into the deeper section, and from there it continues together with Csörnöc, (which, on the lower sections, is called Herpenyő) the southern side - which collects the water of the Hegyhát springs. At high water levels, the river and the creeks are merged and they become almost like a sea.