Cega (river)
| Cega | |
|---|---|
| Location | |
| Country | Spain | 
| Physical characteristics | |
| Source | Sierra de Guadarrama | 
| • location | Province of Segovia | 
| • coordinates | 41°0′55″N 3°51′4″W / 41.01528°N 3.85111°W | 
| Mouth | Douro | 
|  • location | Province of Valladolid | 
|  • coordinates | 41°32′57″N 4°46′3″W / 41.54917°N 4.76750°W | 
| Length | 133 km (83 mi) | 
| Basin features | |
| Progression | Douro→ Atlantic Ocean | 
| River system | Douro | 
| Tributaries | |
| • left | Pirón | 
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.