Ōtira River

The Ōtira River is located in the central South Island of New Zealand. It rises on the slopes of Mount Rolleston in the Southern Alps / Kā Tiritiri o te Moana, and flows north for 20 kilometres (12 mi), passing through the town of Otira before joining the Taramakau River.[1] The Taramakau's outflow is into the Tasman Sea, 12 kilometres (7.5 mi) south of Greymouth.

Ōtira River
Upper Ōtira River and Ōtira Viaduct
Location
CountryNew Zealand
Physical characteristics
Source 
  locationMount Rolleston
Mouth 
  location
Taramakau River
Length20 km (12 mi)

The valley of the Otira River forms the northwestern approach to Arthur's Pass, one of the three main passes across the Southern Alps.