It flows north from its sources southwest of Lake Rotoroa to reach the Mangles River 10 kilometres east of Murchison.

To access the river you head 6 kilometres (3.7 mi) north of the town Murchison and turn off to the Mangles valley on the right.

The road follows the river, which is excellent for trout fishing.

From the north branch you can turn off and head through the Braeburn track to visit Lake Rotoroa.

In the south branch you will find Matakitaki station.