Vallès Occidental

Vallès Occidental
Comarca
Flag Coat of arms
Country	Spain
Autonomous community	Catalonia
Province	Barcelona
Capital	Sabadell and Terrassa
Municipalities	List Barberà del Vallès, Castellar del Vallès, Castellbisbal, Cerdanyola del Vallès, Gallifa, Matadepera, Montcada i Reixac, Palau-solità i Plegamans, Polinyà, Rellinars, Ripollet, Rubí, Sabadell, Sant Cugat del Vallès, Sant Llorenç Savall, Sant Quirze del Vallès, Santa Perpètua de Mogoda, Sentmenat, Terrassa, Ullastrell, Vacarisses, Viladecavalls
Area
• Total	583.1 km2 (225.1 sq mi)
Population (2014)
• Total	899,532
• Density	1,500/km2 (4,000/sq mi)
Demonym(s)
Time zone	CET (UTC+1)
• Summer (DST)	CEST (UTC+2)
Largest municipality	Sabadell

Vallès Occidental is a comarca (county) in Catalonia, Spain. It is unique among the comarques in that the two cities Sabadell and Terrassa (which are of roughly equal size) share the role of comarcal capital. Along with Vallès Oriental it forms the grand comarca of Vallès.

Vallès Occidental borders the comarques of Bages (to the north), Vallès Oriental (to the north and east), Baix Llobregat (to the west), and Barcelonès (to the south). It centers on the Catalan prelittoral depression, limited to the west by the River Llobregat and to the east by the River Caldes. The northern part of the comarca is mountainous. From west to east, it contains part of the Obac range (924m altitude at Castellsapera); the massifs of Sant Llorenç de Munt (1095m at La Mola and 1053m at Montcau) and Puig de la Creu (664m); and the Sant Sadurní (954m) and Farell cliffs (789m). At the south of the comarca is the Collserola range (512m), which forms part of the Catalan Littoral. Between these various ranges is the valley that gives its name to the comarca. The valley actually composes two separate watersheds, the basins of the Llobregat and Besòs.

The Llobregat watershed lies to the west of the axis that runs from Obac to Tibidabo (culminating point of the Collserola range), passing through Matadepera, Sant Quirze del Vallès, Bellaterra, and Sant Cugat del Vallès. Tributaries of the Llobregat include the Canyamssos, the Rubí and the Vallvidrera. East of that axis, the watershed of the Besòs includes the rivers Ripoll and Caldes, (the latter forming the eastern border of the comarca).

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Wikipedia