| name | image | Average flow (m³/s) | basin (m²) | Height (m) | origin location | mouth location | Length (m) | latitude (°) | longitude (°) | canyon | Map |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Riu Madriu | Valira d'Orient | 42.5094444444 | 1.5455555556 | Map | |||||||
| Ariège (river) |  | 76 | 4,135,000,064 | 2,400 | Garonne | 164,000 | 43.5188000000 | 1.4098000000 | Map | ||
| Segre (river) |  | 100 | 22,578,999,296 | 2,402 | Llo | Ebro | 265,000 | 42.3985680000 | 2.1209930000 | Map | |
| Gran Valira |  | 10 | 592,000,000 | Segre | 44,000 | 42.3872222222 | 1.4597222222 | Map | |||
| Riu d'Arinsal |  | Valira del Nord | 42.5440600000 | 1.5180900000 | Map |