Water Storage in Our Dams
| Related Links | |
|---|---|
| Statewide Dam Storage Levels - Current storage information for all our dams and reservoirs | |
| Daily Water Supply - Water Supplied Daily to the Perth Metropolitan area (plus parts of the South West Region) over the past Six Months | |
| Daily Rainfall in Perth | |
| Rainfall at Perth's Dams | |
| Yearly Streamflow - Yearly Streamflow for Major Surface Water Sources | |
Note: From 02 July 2007 the increase in the Water Corporation's dam storage is the result of available water traded from Harvey Water in the Stirling and Samson Dams.
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| Available storage is the volume above 110 GL, which is the amount not readily available. Please note that the vertical axis on the graph above does not start at zero. (Click on the graph to view a larger version) | |||||||
The graph above shows the total volume of water stored in the dams supplying water to the Integrated Water Supply System (Perth, Mandurah, Pinjarra, Harvey and the Goldfields and Agricultural regions). These dams include Canning, Serpentine, Serpentine Pipehead, Victoria, Mundaring Weir, South Dandulup, North Dandalup, Wungong, Stirling and Churchman's Brook. Mundaring Weir normally only supplies water to the Goldfields and Agricultural regions.
Remember, Be Waterwise
Use water wisely in your home and garden. Help to conserve the state's precious water resources for the future. See our Waterwise Guides for more information.
Water Storage in Our Dams on Monday, 05 January 2009
Current Storage: 239.14 gigalitres (GL) Total Capacity: 622 GL Percentage of Total Capacity: 38.4 % Available Surface Water: 129.1 GL
Potential full capacity has been reduced by 54 GL in 2007/08 due to:
a. A decrease in South Dandalup Dam of 67 GL for streamflow and safety reasons; and,
b. The inclusion of a minimum of 13 GL from water trading with Harvey Water.
Click here for an explanation of the units used to specify water consumption.
The average volume of water used in the 2005/2006 financial year by each residential water service in Perth was 254 kilolitres (kL).
Date 30 Dec 31 Dec 01 Jan 02 Jan 03 Jan 04 Jan 05 Jan Last Year (GL) 254.98 254.38 253.82 253.10 252.61 252.07 251.56 This Year (GL) 243.49 242.84 242.24 241.64 240.26 239.75 239.14 Difference (GL) -11.49 -11.54 -11.58 -11.46 -12.35 -12.32 -12.42
Current Water Storage in Our Main Dams
The graph above shows the volume of water stored in the main dams that supply water for the Integrated Water Supply System.
The total capacity from all our dams is 622 GL.
Dam Current
Storage
(GL)Total
Capacity
(GL)Percentage of
Total CapacityCanning Dam 43.5 90 48.2% Churchman Brook Dam 1.9 2 83.8% Mundaring Dam 31.4 64 49.3% North Dandalup Dam 27.1 75 36.2% Samson Dam (Metro Supply) 2.7 6 44.4% Serpentine Main Dam 54.1 138 39.3% Serpentine Pipehead Dam 1.9 3 73.9% South Dandalup Dam 33.5 138 24.2% Stirling Dam (Metro Supply) 14.0 37 38.3% Victoria Dam 5.9 9 62.2% Wungong Dam 23.2 60 38.8% Total 239.1 622 38.4%
Units Used to Specify Water Consumption and Storage
One Gigalitre = one thousand Megalitres One Gigalitre = one million kilolitres One Megalitre = one thousand kilolitres One Megalitre = one million litres One kilolitre = one thousand litres One kilolitre of water = one thousand kilograms = one tonne