A tributary of the Bealey River, it arises in the Polar Range to the east of Arthur's Pass and flows south-west within Arthur's Pass National Park.

The Mingha River joins it just before it enters the Bealey.

It is one of the headwaters of the Waimakariri River.

[1] A tramping track runs part of the way along the river to a backcountry hut.

This article about a river in Canterbury, New Zealand is a stub.