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
S7 (Rhine-Ruhr S-Bahn) and on weekends, every 30 minutes. Line S 7 runs over lines built by two railway companies: There was an earlier line S 7 operated by DB Regio, which began at Düsseldorf Airport Terminal station. From there it ran south to Solingen Hbf via Düsseldorf Hbf. With the change to the 2010 timetable on 13 December 2009, line S1 replaced the service between Düsseldorf Hbf and Solingen. The S11 was extended to run to Düsseldorf Airport Terminal station. S7 (Rhine-Ruhr S-Bahn) Line S 7 is an S-Bahn line on the Rhine-Ruhr network in the German state of North Rhine-Westphalia, which