Erpa (river)

Erpa is a river of North Rhine-Westphalia, Germany.

The Erpa springs near Weiler in der Ebene, a district of Zülpich. It is a left tributary of the Lechenicher Mühlengraben North of Ahrem, a district of Erftstadt. The Lechenicher Mühlengraben is a confluence of the Rotbach.