Wikipedia
Ščavnica
The Ščavnica (; German: Stainz) is a 56 km river in Styria, Slovenia. It sources near Zgornja Velka and flows along the Slovene Hills towards the southeast. It passes Negova Castle and Sveti Jurij ob Ščavnici, traverses Lake Gajševci and the town of Ljutomer, and finally joins the Mur from the right in Razkrižje.
The Ščavnica is one of the most heavily polluted rivers in Slovenia.