Lower Nihotupu Reservoir

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Lower Nihotupu Reservoir
Lower Nihotupu storage lake from Nihotupu bush tram line.jpg
Looking south, the reservoir from the Rainforest Express bush tram line.
Location Auckland, North Island
Coordinates 36°57′32″S 174°36′48″E / 36.9588°S 174.6132°E / -36.9588; 174.6132Coordinates: 36°57′32″S 174°36′48″E / 36.9588°S 174.6132°E / -36.9588; 174.6132
Type Reservoir
Basin countries New Zealand
Surface area 52.9 ha (131 acres)[1]
Water volume 4.60×10^6–4.81×10^6 m3 (3,730–3,900 acre·ft)[2][1]

The Lower Nihotupu Reservoir (or Lower Nihotupu Dam) is one of five reservoirs in the Waitakere Ranges that supply water to Auckland. Built between 1945 and 1948,[2] the reservoir covers an area of 52.9 hectares and has a capacity of 4.6 million cubic metres.[1] The reservoir is managed by Water Care Services Limited, a council-owned company.

The dam is credited as one of the first applied examples of the soil mechanics science in New Zealand, and was soon followed by the creating of engineering geology as a major subject at the School of Engineering, Auckland.[2]


  1. ^ a b c [1] (from the Water Care Services website. Accessed 2013-09-24.)
  2. ^ a b c Engineering to 1990IPENZ, Engineering Publications Co Ltd, Page 8-9