| name | image | Average flow (m³/s) | basin (m²) | Height (m) | origin location | mouth location | Length (m) | latitude (°) | longitude (°) | canyon | Map |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Narcea (river) |  | 16 | 1,135,000,064 | 1,600 | Nalón (river) | 97,000 | 43.4741980000 | -6.1070464000 | Map | ||
| Río Aranguín | Nalón (river) | 20,000 | |||||||||
| Río Caleao | Nalón (river) | 9,000 | |||||||||
| Río Candín | Nalón (river) | 43.3166700000 | -5.7166700000 | Map | |||||||
| Nora River |  | Nalón (river) | 67,000 | 43.4187900000 | -5.8918600000 | Map |