Aabach-Brücke - Reelsen

The Aa rises on the eastern slope of the Rehberg, part of the Eggegebirge mountains, and is an approx. 20 km long tributary of the Nethe.  

The Aa characterizes the eastern edge of the village of Reelsen. It rises on the Rehberg west of Langeland and flows south-east through the entire hiking area of Bad Driburg. Hikers cross it on various hiking trails, e.g. the Jakobspilgerweg, the Hölderlinweg, the Friedrich-Wilhlem-Weber-Weg or the Koerferweg. It was once used to power the mill wheels of the Reelser and Alhauser mills. A special feature is the unknown right tributary, a few hundred meters long, at the southernmost point of the Johannes Gelhaus path near Reelsen. As a source of lime tufa, it forms small sinter terraces with the help of mosses. In summer, it falls completely dry.