High Quality Content by WIKIPEDIA articles! Waiau is a small town in north Canterbury, in the South Island of New Zealand. It lies 30 kilometres east of Hanmer Springs on the northern bank of the Waiau River, some 30 kilometres from the river's mouth.Waiau is the largest town on State Highway 70, also known as the Inland Kaikoura Route. From 1919 until 1978, Waiau was the terminus of the Waiau Branch, a branch line railway that ran to the town from a junction with the Main North Line in Waipara. There were proposals to extend this line beyond Waiau as part of the Main North Line and some 3 km of formation was made for a route to Kaikoura, but construction ground to a halt and a coastal route via Parnassus and Hundalee was chosen for the Main North Line instead.