It is a left tributary of the Ledava near Kerkaszentkirály.

In its upper course, upstream from its confluence with the Little Kerka (Slovene: Mala Krka; Hungarian: Kerca, Kis-Kerka[2]) south of Bajánsenye, it is also called Big Kerka (Slovene: Velika Krka; Hungarian: Nagy-Kerka; Prekmurje Slovene: Velka Kerka).

The river is about 60 km (37 miles) long.

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