Kowhai Reservoir, Mairangi Bay
Mairangi Bay, New Zealand
2020
Kowhai Reservoir is located in Mairangi Bay, Auckland and can hold 4.6 million litres of water. It serves a population of 16,500 residents from Browns Bay in the north to Campbells Bay in the south. What’s more, it’s 7 metres high, 28 metres in diameter... and is 63 years old.