Cega (river)

Cega
Location
CountrySpain
Physical characteristics
SourceSierra de Guadarrama
  locationProvince of Segovia
  coordinates41°0′55″N 3°51′4″W / 41.01528°N 3.85111°W / 41.01528; -3.85111
MouthDouro
  location
Province of Valladolid
  coordinates
41°32′57″N 4°46′3″W / 41.54917°N 4.76750°W / 41.54917; -4.76750
Length133 km (83 mi)
Basin features
ProgressionDouroAtlantic Ocean
River systemDouro
Tributaries 
  leftPirón

The Cega is a river in the Iberian Peninsula a left-bank tributary of the Douro.

It is born out of the confluence of the Artiñuelo and the Vueltas creeks in the Sierra de Guadarrama. 133 km-long, the Cega, running northwest through the province of Segovia, empties in the Douro in the province of Valladolid, having previously received the waters of the Pirón, its main left-bank tributary.