The Emscher is a river located in the North Rhine-Westphalia region of Germany. It flows for about 80 kilometers, primarily through industrial areas, and is known for its historical significance in the region's development. The river has undergone extensive modifications over the years, including channelization and pollution control efforts. In recent years, the Emscher has been the focus of a major restoration project aimed at improving water quality and restoring natural habitats. This initiative is part of the larger Emscher Landscape Park project, which seeks to enhance the ecological and recreational value of the river and its surroundings.