The Winterbeek, a tributary of the Demer, meanders over a course of 32km from Beringen to Scherpenheuvel-Zichem. The Winterbeek changes names along the way, from Kleine Beek to Winterbeek, Zwart Water and, finally, Hulpe, before flowing into the Demer. NARMENA will focus on the area of Kloosterbeemden and Demerbroeken.
Due to alternating dry and wet conditions and the transition from nutrient-poor to nutrient-rich environments, the Winterbeek valley is home to a wide variety of biotopes, each with their typical fauna and flora. The valley is therefore of exceptional importance to nature conservation and biodiversity in Flanders. Large parts of the valley have been designated as a nature reserve and are protected at European level under the Habitats Directive. It is therefore not surprising that this authentic streamscape attracts many hikers and nature enthusiasts. Agricultural and residential areas are limited in the valley. Local farmers have largely adapted their farming activities to the wet characteristics of the area.
In addition to its importance as a natural area, the valley also acts as a flooding area. The storage capacity of the natural floodplains in this valley has a regulating effect on high discharges. The conservation of these zones is essential to prevent increased risk of flooding further downstream.
The natural structure of the course of the Winterbeek is very valuable. There are few human interventions. For example, the stream has practically no artificial bank protection and still follows a natural course with many meanders.
