Ruhr (river) Ruhr (river) __notoc__ The Ruhr is a river in western Germany (North Rhine-Westphalia), a right tributary (east-side) of the Rhine. The source of the Ruhr is near the town of Winterberg in the mountainous Sauerland region, at an elevation of approximately 2,200 feet (670 m). It flows into the lower Rhine at an elevation of only 56 feet (17 m) in the municipal area of Duisburg. Its total length is , its average discharge is 79 m³/s (cubic metres per second) at Mülheim near its mouth. Thus, its discharge is, for example, comparable to that of the river Ems in
Ruhr system valid for the entire area. The Ruhr region is well-integrated into the national rail system, the Deutsche Bahn, for both passenger and goods services, each city in the region has at least one or more train stations. The bigger central stations have hourly direct connections to the bigger European cities as Amsterdam, Brussels, Paris, Vienna or Zürich. The Ruhr area also contains the longest tram system in the world, with tram and Stadtbahn services from Witten to Krefeld. Originally the system was even bigger, it was possible to travel from Unna to Bad Honnef without using railway or bus