The Ruhr River is a significant waterway in western Germany, flowing through the Ruhr area, an industrial region known for its coal and steel production. The river stretches approximately 219 kilometers (136 miles) and is a tributary of the Rhine River. It plays a crucial role in the local economy and transportation. The Ruhr River is also important for recreation and nature. Its banks are lined with parks and walking trails, attracting both locals and tourists. The river supports various wildlife and contributes to the region's biodiversity, making it a vital natural resource in North Rhine-Westphalia.