| name | image | Average flow (m³/s) | basin (m²) | Height (m) | origin location | mouth location | Length (m) | latitude (°) | longitude (°) | canyon | Map |
|---|---|---|---|---|---|---|---|---|---|---|---|
| River Strule |  | Camowen River | River Mourne | 28,000 | 54.7378000000 | -7.4300000000 | Map | ||||
| River Derg |  | Lough derg | River Mourne | 45,000 | 54.7333000000 | -7.4333300000 | Map |