The Höherhugen River flows from the Rueckenberge to the Middle Sea in the Kreisens. It is navigable for much of its length, though used more by smugglers than by merchants.
It is fed by two major rivers, the Wenig River and Kalder River, which meets the Höherhugen at Lake Hochrot.
The city Suidseehaven lies where the river empties into the sea.