Duerna
| Duerna | |
| Latin: Ornia | |
| River | |
 Watershed of the Duerna at Priaranza de la Valduerna (Maragatería)
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|
| Country | Spain |
|---|---|
| Tributaries | |
| - left | Peces |
| - right | Espino, Llamas |
| Source | Union of the streams Cabrito and Ballina |
| - location | Molinaferrera, Lucillo, Maragatería, León, Castile and León, Spain |
| - elevation | 1,120 m (3,675 ft) |
| Mouth | Tuerto river |
| - location | Requejo de la Vega, Soto de la Vega, Tierra de La Bañeza, León, Castile and León, Spain |
| - elevation | 775 m (2,543 ft) |
| Length | 54 km (34 mi) |
| Basin | 317 km2 (122 sq mi) |
The Duerna is a river in the province of León, Spain. It begins at the convergence of the Cabrito and Ballina streams, in the town of Molinaferrera, in the Lucillo municipality.
Coordinates: 42°18′36″N 5°53′46″W / 42.3100°N 5.8961°W
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