| name | image | Average flow (m³/s) | basin (m²) | Height (m) | origin location | mouth location | Length (m) | latitude (°) | longitude (°) | canyon | Map |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry River (New Zealand) | Ruamahanga River | -41.2602777778 | 175.4002777778 | Map | |||||||
| Kopuaranga River | Ruamahanga River | 28,000 | -40.9000000000 | 175.6833333333 | Map | ||||||
| Turanganui River (Wellington) | Ruamahanga River | 24,000 | -41.3667000000 | 175.1500000000 | Map | ||||||
| Waingawa River | Ruamahanga River | 48,000 | -41.0166666667 | 175.6666666667 | Map | ||||||
| Waiohine River |  | Ruamahanga River | 35,000 | -41.0600000000 | 175.4520000000 | Map |