| Pas | |
|---|---|
 | |
 | |
| Location | |
| Country | Spain |
| State | Cantabria |
| Region | Pas valley, Santander bay |
| Physical characteristics | |
| Source | |
| • location | Castro Valnera |
| • elevation | 1,200 m (3,900 ft) |
| Mouth | Ría de Mogro |
• location | Santander bay, Bay of Biscay |
• elevation | 0 m (0 ft) |
| Length | 57 km (35 mi) |
Basin size | 649 km2 (251 sq mi) |
| Discharge | |
| • location | mouth |
| • average | 18.1 m3/s (640 cu ft/s) |
| Basin features | |
| Tributaries | |
| • left | Yera, Viaña, Magdalena, Jaral, Barcelada |
| • right | Pandillo, Pisueña |
The Pas River is located in the region of Cantabria in the northern part of Spain.1 The river flows through the autonomous community of Cantabria and empties into the Cantabrian Sea.