On a recent trip from Rotorua to Hamilton, I stopped to look at what I thought at the time was a section of Waikato River, just west of State Highway 1, south-east of Cambridge [click here to view map]. Waikato River is New Zealand’s longest river, running 425 kms from its source on the slopes of Mount Ruapehu, through Lake Taupo, New Zealand’s largest lake, then flowing through the Waikato Plains before emptying into the Tasman Sea. I was therefore surprised to see a sign at a jetty informing me that this was in fact a lake – Lake Karapiro.

But something didn’t add up – it seemed remarkably “river-like” for a lake. Continue reading →