| name | image | Average flow (m³/s) | basin (m²) | Height (m) | origin location | mouth location | Length (m) | latitude (°) | longitude (°) | canyon | Map |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Ahaura River | Grey River | -42.3500000000 | 171.5166666667 | Map | |||||||
| Arnold River (New Zealand) |  | Grey River | 20,000 | -42.4333000000 | 171.3670000000 | Map | |||||
| Blue Grey River | Grey River | 8,000 | -42.4079083333 | 172.1071388889 | Map | ||||||
| Brown Grey River | Grey River | 10,000 | -42.3762166667 | 172.1292472222 | Map | ||||||
| Clarke River (Grey District) | Grey River | 12,000 | -42.3706000000 | 171.8390000000 | Map |