Water Storage Levels

Water supply in the lower Hunter is vulnerable to drought - our dams fill quickly but they empty quickly as well. 

Our water levels drop faster than most other major Australian urban centres during hot, dry periods because we have shallow water storages and high evaporation rates. Below is a snapshot of our current storage levels against their longer term averages and also a forecast of where storage levels might get to under dry, wet or average forecast, and when water restrictions may need to be applied.

What can I do?

Water demand from customers also has a major influence on our dam levels. Here in the Hunter we each use on average 191 litres per day, this is 10% more than we could be*.

There's a lot all of us can do to save our precious resource and be more water efficient, either by following the Water Wise behaviours and choosing water efficient appliances when upgrading household items. Fixing leaks around the house is another way to save water and on your bills.  

Together we can make a big difference in conserving our most precious resource.


Water Storage Levels

* Nine Major Australian Water Utilities (50,000+ customers) have consistently reported residential consumption less than or equal to this. This includes the Central Coast Council (based on averages from Gosford and Wyong), Queensland Urban Utilities, Logan City Council and various Victorian utilities.

Water storage levels - last updated 21 May 2019

Water Source Maximum Capacity (ML) Current Volume (ML) % Full 10 year average total storage
Chichester 18,356 14,790 80.6% 16,967
Grahamstown 182,305 122,780 67.3% 158,294
Tomago 60,000 37,083 68.7% 49,438
Anna Bay 16,024 8,022 50.1% 10,528
Total Storage 276,685 182,675 67.5% 235,227
 Water Forecast Graph


This supply is drawn from a combination of surface storages and groundwater resources.