Bergerven - blue - 4,9 km

The Bosbeek originates in As, flows through the villages of Opoeteren and Neeroeteren, and after 22 km flows into the Maas near Aldeneik (Maaseik). Over that short distance, it has a drop of 50 meters, making it suitable for the construction of watermills: 16 in total. The valley cuts deep through the Kempens Plateau and virtually divides it in two. Natuurpunt is developing a nature reserve here from source to mouth through the purchase and proper management of dozens of abandoned plots.