Floodplains are essential for rivers to prevent flooding of protected areas – i.e. inhabited areas behind the dikes – in case of high river discharges. However, this is only one of the functions of the floodplains: they are also important for, for example, ecology and provide many services to the society. In ‘the floodplains’, RiverCare researchers look at and monitor how floodplains, along river interventions such as side-channels and longitudinal training dams, develop from the perspectives of morphology and ecology.