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
Urbanization in the German Empire did and while only one-fifth of the population in both the Rhineland and Westphalia (in the western part of Germany) did. Overall, the most robust urbanization in Germany during this time period occurred in the Rhineland, Westphalia, Saxony, and Brandenburg. Similarly, industrial development in Germany during this time focused on the Ruhr, Saxony, and Silesia. Out of the total population in these provinces, 47% of Brandenburg's population, 40% of Westphalia's population, and 50% of the Rhineland's population lived in communities of 20,000 people or more in 1910. Between 1875 and 1910, German cities experienced a huge increase in their population.