Ripoll

The Ripoll is a river in the comarca of Vallès Occidental, Catalonia, Spain. It covers the vast majority of the shire, crossing it from north to south, and flows into the river Besòs, near Barcelona.

The source of the river is located in the Serra de Granera, at 640 metres of elevation, and it discharges in Montcada i Reixac, at 35.5 metres . It has a length of 39.5 kilometres , with a total of 181.5 kilometres , once its tributaries are included. It covers the vast majority of the comarca of Vallès Occidental, passing through the municipalities of Sant Llorenç Savall, Castellar del Vallès, Sabadell, Barberà del Vallès, Ripollet and Montcada i Reixac. Throughout the comarca, it crosses alluvial clay terrains, which erodes easily, causing the river to carve a deep path into the soil.

Wikipedia