This page contains information about Wilson's Dam and Whau Valley Dam, including daily updates about their current levels. This page also has information about any water restrictions that are in place.
23/07/2020 3:28 p.m.
We take raw water from a number of sources, and our two main storage reservoirs at Whau Valley and Wilsons Dam ensure continuous supply during even prolonged dry spells.
Two other dams, the Gomez Dam at Hikurangi and Takahiwai Dam at Ruakaka, are not currently in use but are available in emergencies.
Whau Valley Dam
Whau Valley Dam holds 1,871,286 m3 of water and supplies Whangarei City and its surrounds.
The catchment area also has recreational value and management of it is included in our reserve management plan for Pukenui Forest.
Pukenui Forest - Ngahere o Pukenui Reserve
Wilsons Dam holds 2,491,730 m3 of water and supplies the Bream Bay area.
- Boating and swimming are not allowed at this dam.
Water level alerts
The water levels in these reservoirs rise and fall through a normal year, and the quantity of water together with the time of year are used to calculate the 'Alert' level shown in the table below.
If the alert colour moves to amber or red, we will update this website with any measures or restrictions that are put in place.
Please do not eat fish, swim or allow dogs into the water at Wilson's Dam or Whau Valley Dam.
Current Dam Levels
Water-levels in dams can be slow to change after rainfall, but the figures below are updated most business days.