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
Rhine-Ruhr Stadtbahn Rhine-Ruhr Stadtbahn The Rhine-Ruhr Stadtbahn () is an umbrella system of all of the Stadtbahn (light rail) lines included in the integrated public transport network of Verkehrsverbund Rhein-Ruhr (VRR) which covers the Rhine-Ruhr metropolitan area in western Germany. It does not include the independent Cologne Stadtbahn and Bonn Stadtbahn systems. At the beginning of the 1960s, road traffic in the Rhine-Ruhr area increased like in other German metropolitan areas. Existing trams were regarded as obstacles for car-oriented cities. Therefore, these trams should be relocated to underground sections below city centers (as Stadtbahn lines) if they were not replaced by bus