Jasień (river)

The Jasień [ˈjaɕɛɲ] is a river flowing through the Polish city of Łódź that played a major role in the city's development as an industrial centre in the early nineteenth century. Sections of the river have been regulated and moved to underground canals, while several ponds remain scattered across the city's parks in what used to be the river's overground corridor. The Jasień is 12.7 km (7.9 miles) long, beginning its course in the hills of the Stoki district in the northeast of the city at an elevation of c. 245 metres above sea level, and flowing down towards the Ner river valley in the southwest.