This study provides valuable insight into the morphodynamics of low-energy streams and resulting planform evolution. Although the sinuous, rectangular planform is similar in peat-filled and sand-filled valleys, the stream planform evolution and dominant morphodynamic processes are different. This knowledge contributes to the development of sustainable and costeffective stream restoration approaches in both settings. These should be aiming at restoring the natural morphodynamic processes, as alignment with these processes is expected to increase robustness and reduce maintenance efforts. @en