From what i have been told they are 2 separate rivers but the Rainbow river flows into the Wairau river at the headwaters.
the rainbow warrior incident caused and outrage in nz and nz's anti nucleur stance was revitalised
The Clutha river.
Clutha (matau) River.
on the Waikato river in NZ
mataura
The Waikato in the north island, is NZ's longest river , and in the south island, the Clutha (Mata Au) is NZ's river with the greatest flow.
the furthest river north is kawarau
The Clutha
The Waikato River, the longest river in New Zealand
The longest river in NZ is the mighty Waikato.
The longest river is The Waikato at 425 km.
cambell river