The Heller is a 30 km long river in western Germany. It is a left tributary of the Sieg. The source is located near Haiger in Hesse. It flows through Burbach and Neunkirchen in North Rhine-Westphalia. It flows into the river Sieg in Betzdorf, Rhineland-Palatinate. Its basin area is 204 km². See also List of rivers of North Rhine-Westphalia List of rivers of Rhineland-Palatinate List of rivers of Hesse References Rivers of North Rhine-Westphalia Rivers of Rhineland-Palatinate Rivers of Hesse Rivers of Siegerland Rivers of the Westerwald Rivers of Germany