| name | image | Average flow (m³/s) | basin (m²) | Height (m) | origin location | mouth location | Length (m) | latitude (°) | longitude (°) | canyon | Map |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Río Bermaña | Río Umia | 42.6022222222 | -8.6477777778 | Map | |||||||
| Río Chaín | Río Umia | 42.5830555556 | -8.6463888889 | Map | |||||||
| Arroyo Armenteira | Río Umia | 42.4963611111 | -8.7770277778 | Map |