Río Otún vs Essen

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The Otún River (Río Otún) is a river in the Risaralda department of Colombia. Its source is Lake Otún, fed by meltwater from Nevado Santa Isabel, and its outlet is the Cauca River. The Otún River passes between the cities of Pereira and Dosquebradas, and is crossed at that point by the César Gaviria Trujillo Viaduct, one of the largest cable-stayed bridges in South America. The Otún River is the only source of drinking water for Pereira and Dosquebradas.

The local water company takes about 1.8 cubic metres per second (64 cu ft/s) from the river at a site known as Nuevo Libaré. Agricultural development in that region has affected the quality of the water from the river, with pig and chicken farms as well as human waste water being major sources of bacteriological contamination.[1]The river passes through several protected zones including the Otún Quimbaya Flora and Fauna Sanctuary.

Source: Wikipedia

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Essen (German pronunciation: [ˈɛsn̩] (listen); Latin: Assindia) is the central and second largest city of the Ruhr, the largest urban area in Germany. Its population of 583,109 makes it the ninth largest city of Germany, as well as the fourth largest city of the federal state of North Rhine-Westphalia. On the Ruhr and Emscher rivers, Essen geographically is part of the Rhineland and the larger Rhine-Ruhr Metropolitan Region. The Ruhrdeutsch regiolect spoken in the region has strong influences of both Low German (Westphalian) and Low Franconian (East Bergish). Essen is seat to several of the region's authorities, as well as to eight of the 100 largest publicly held German corporations by revenue, including two DAX corporations. Essen is often considered the energy capital of Germany with E.ON and RWE, Germany's largest energy providers, both headquartered in the city. Essen is also known for its impact on the arts through the respected Folkwang University of the Arts, its Zollverein School of Management and Design, and the Red Dot industrial product design award. In early 2003, the universities of Essen and the nearby city of Duisburg (both established in 1972) were merged into the University of Duisburg-Essen with campuses in both cities and a university hospital in Essen. In 1958, Essen was chosen to serve as the seat to a Roman Catholic diocese (often referred to as Ruhrbistum or diocese of the Ruhr).

Founded around 845, Essen remained a small town within the sphere of influence of an important ecclesiastical principality (Essen Abbey) until the onset of industrialization. The city then — especially through the Krupp family iron works — became one of Germany's most important coal and steel centers. Essen, until the 1970s, attracted workers from all over the country; it was the 5th-largest city in Germany between 1929 and 1988, peaking at over 730,000 inhabitants in 1962. Following the region-wide decline of heavy industries in the last decades of the 20th century, the city has seen the development of a strong tertiary sector of the economy. The most notable witness of this Strukturwandel (structural change) is the Zollverein Coal Mine Industrial Complex, which has once been the largest of its kind in Europe. Ultimately closed in 1993, both the coking plant and the mine have been inscribed in the list of UNESCO World Heritage Sites since 2001. Notable accomplishments of the city in recent years include the title of European Capital of Culture on behalf of the whole Ruhr area in 2010 and the selection as the European Green Capital for 2017.

Source: Wikipedia