It arises in the Puketeraki Range and flows south-east into the Waimakariri River near Christchurch International Airport.

[1] The connection with the Waimakariri is via a diversion channel running south-west, replacing the Eyre's original easterly flow.

The river is named after Edward John Eyre, the Lieutenant-Governor of New Munster from 1848 to 1853.

[2] The river rarely carries surface water,[3] due to the unreliability of the easterly rains which feed it.

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