| name | image | Average flow (m³/s) | basin (m²) | Height (m) | origin location | mouth location | Length (m) | latitude (°) | longitude (°) | canyon | Map |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Gave de Pau |  | 82 | 5,200,000,000 | 457 | Cirque de gavarnie | Adour | 183,000 | 43.5461000000 | -1.1947000000 | Map | |
| Gaves réunis |  | 5,200,000,000 | 6 | Peyrehorade | Adour | 9,400 | 43.5461111100 | -1.1944444400 | Map | ||
| Nive |  | 1,030,000,000 | 360 | Orbaitzeta | Adour | 80,000 | 43.0249627267 | -1.1805985820 | Map | ||
| Midouze |  | 3,590,000,128 | 28 | Adour | 43,000 | 43.8002777778 | -0.8608333333 | Map | |||
| Moulin de Bordes | 75 | Adour | 11,400 |