River restoration is a field of research and practice focused on the restoration, rehabilitation, and ecological enhancement of rivers and their associated habitats. This includes projects aimed at improving water quality, restoring natural flow regimes, reviving aquatic and terrestrial habitats, and enhancing biodiversity in river ecosystems. River restoration often involves a multidisciplinary approach that combines principles of ecology, hydrology, geomorphology, and engineering to create sustainable and resilient river systems that benefit both the environment and local communities.