The River Ruhr – an urban river under particular interest for recreational use and as a raw water source for drinking water: The collaborative research project “Safe Ruhr” – microbiological aspects - ScienceDirect
Ruhr (river) - Wikipedia
Muelheim an der Ruhr city in Germany. Cityscape with River Ruhr Stock Photo - Alamy
Green infrastructure in the Ruhr Metropolis
Ruhr (river) - Wikipedia
Muelheim an der Ruhr city editorial image. Image of sightseeing - 208167180
3,300+ Essen City Urban Scene Ruhr Stock Photos, Pictures & Royalty-Free Images - iStock
View of city centre with river Ruhr, Mülheim an der Ruhr, Ruhr area, North Rhine-Westphalia, Germany Stock Photo - Alamy
Germany's Rhine-Ruhr region: home for 10 million people
View of Ruhr River, Germany Stock Photo - Image of blue, shore: 129316336
Rhine-Ruhr, Industrial Capital of Western Germany | Prologis
Aerial view, City View Wetter, River Ruhr, Obergraben, Harkortsee, Alt Wetter, Weather, Ruhr Area
Railway bridge over river Ruhr, Essen, … – License image – 70099275 ❘ lookphotos
Ruhr River | Facts, Map, & Length | Britannica
Aerial view, Ruhr river, Essen-Kettwig, Essen, Ruhrgebiet region, North Rhine-Westphalia, Germany, Europe Stock Photo - Alamy
Essen-Kettwig, City View Seen from the Bridge Over the River Ruhr. Stock Photo - Image of view, protestant: 229421584
1.024 Ruhr River Bilder und Fotos - Getty Images
Rivers - Ruhrverband
Aerial view, River Ruhr, city view Überruhr Hinsel, Ruhrschleife, Wassergewinnung Essen GmbH
Ruhr river near the city of Arnsberg in summer with - Royalty free image #27070005 | PantherMedia Stock Agency
Ruhr Valley, Germany - WorldAtlas
Ruhr River | Facts, Map, & Length | Britannica
Ruhr area: transformation of the coal region
Ruhr river hi-res stock photography and images - Alamy
Essen on the Ruhr River | Wander
970 Ruhr City Bilder und Fotos - Getty Images
Ruhr - Wikipedia
