| Upper Nihotupu Reservoir | |
|---|---|
 Upper Nihotupu Dam | |
  Upper Nihotupu Reservoir | |
| Location | Auckland, North Island |
| Coordinates | 36°57′00″S 174°33′50″E / 36.95°S 174.5638°E |
| Type | Reservoir |
| Basin countries | New Zealand |
| Surface area | 12.5 ha (31 acres)[1] |
| Water volume | 2.2×106 m3 (1,800 acre⋅ft)[1] |
The Upper Nihotupu Reservoir (or Upper Nihotupu Dam) is one of five reservoirs in the Waitākere Ranges that supply water to Auckland, New Zealand. Completed in 1923,[1] the concrete gravity dam and its reservoir are managed by Watercare Services, a council-owned company.