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
Ennepe-Ruhr-Kreis Ennepe-Ruhr-Kreis The Ennepe-Ruhr-Kreis is a district in the center of North Rhine-Westphalia, Germany. It is part of the southern Ruhr urban area and has ca. 324,000 inhabitants (2012). The district's seat (capital city) is Schwelm; the largest of its nine towns is Witten. The name of the district describes its geographical location – it is located in the valleys of the rivers Ruhr and Ennepe. Geologically it is part of the north-eastern Rhenish Massif, a "Mittelgebirge" landscape; only small parts of Witten belong to the flat Westphalian Lowland. The district consists of nine municipalities, all entitled "Stadt" (town or city).