Lake Karapiro is an artificial reservoir lake on the Waikato River at Karapiro, 8 kilometres (5.0 mi) south-east of Cambridge in New Zealand's North Island. The lake was formed in 1947 by the damming of the Waikato River to store water for the 96-megawatt Karapiro power station. The lake is also one of two premier rowing venues in New Zealand and is the base for the country's high-performance rowing programme.

Cambridge is a town in the Waipa District of the Waikato region of the North Island of New Zealand. Situated 24 kilometres (15 mi) southeast of Hamilton, on the banks of the Waikato River, Cambridge is known as "The Town of Trees & Champions". The town has a population of 21,800, making it the largest town in the Waipa District, and the third largest urban area in the Waikato.