The towns in the Demer Valley are often in the news due to flooding. At the same time, the nature in the valley is threatened during the summer months by drought. The Sigma Plan aims to permanently make this flooding a thing of the past, to restore the exceptional Demer nature and to promote the valley as a recreational hotspot. A winding Demer, as it once was, will not only prevent flooding, it will also reinforce the connection between the river, nature and the recreational visitors in an unique way. Here, within a few years, you will be able to spot the beavers even better and explore the banks of the Demer to your heart's content right from your canoe or kayak.