Cega (river)

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

Cega
Location
Country	Spain
Physical characteristics
Source	Sierra de Guadarrama
• location	Province of Segovia
• coordinates	41°0′55″N 3°51′4″W
Mouth	Douro
• location	Province of Valladolid
• coordinates	41°32′57″N 4°46′3″W
Length	133 km (83 mi)
Basin features
Progression	Douro→ Atlantic Ocean
River system	Douro
Tributaries
• left	Pirón [es]

It is born out of the confluence of the Artiñuelo and the Vueltas creeks in the Sierra de Guadarrama.^[1] 133 km-long,^[2] 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,^[2] its main left-bank tributary.