Water in New Zealand and are of varying types and origins. Many of the lakes in the central North Island area are volcanic crater lakes, while the majority of the lakes near the Southern Alps were carved by glaciers. Hydroelectric reservoirs are common in South Canterbury, Central Otago and along the Waikato River. Over 180,000 kilometres of rivers has been mapped in New Zealand, the longest being the Waikato River with a length of 425 kilometres and the largest river by volume is the Clutha River with a mean discharge of 533 cubic metres per second. New Zealand has many notable waterfalls, some of
Hutt River (New Zealand) Hutt River (New Zealand) The Hutt River (Māori:"Te Awakairangi", "Te Wai o Orutu" or "Heretaunga") flows through the southern North Island of New Zealand. It flows south-west from the southern Tararua Range for , forming a number of fertile floodplains, including Kaitoke, central Upper Hutt and Lower Hutt. The headwaters in the Kaitoke Regional Park are closed to preserve the quality of the drinking water drawn off at Kaitoke to supply the greater Wellington area. Below Kaitoke is the Kaitoke Gorge, a popular destination for rafting. Below the gorge is Te Marua, where the Mangaroa River joins the Hutt from