Aratiatia rapids

We did get to see the rapids which we were aiming for on our bikes but went in the car another day. Several times a day the sluice gates are opened and the gorge fills with water then empties again as the gates are shut. These are down river from the Huka falls and the force of the river is harnessed in a power station. This 1 river produces 15% of New Zealand's electricity.