07 – The widened riverbed. A river with more space

In this section, the riverbed has been widened to provide more space for the water, especially during floods. When a river has little room to expand, the water flows faster and the risk of flooding and damage increases. By widening the banks, the water can spread out laterally, slow down and dissipate its energy more safely.

But it is not just a matter of safety: a wider river also becomes a more vibrant environment. New spaces form, such as gravel bars, stretches of calm water, small wetlands and shallow areas ideal for wildlife. These areas provide shelter and breeding grounds for fish, amphibians, aquatic insects and many small invertebrates.

Vegetation also expands: willows, marsh grasses and shrubs capable of adapting to changes in water level grow. Their roots stabilise the banks and provide shade, nourishment and shelter for wildlife. These environments are constantly changing: the water alters the landscape, transports material, deposits sand and creates new forms. Every flood leaves its mark and helps to shape a more complex and dynamic habitat.