Updated: Thursday, 09 July 2020

Current

42.5%

268 GL

Last year

45%

284 GL

Change

5.7%

-16.2 GL

To 9am

0.00

mm

May total

May average*

32.20

mm

88.70

mm

The streamflow figure shown is for all the dams that supply the Integrated Water Supply Scheme. Streamflow is recorded in water year which is from May to April. These figures include the Stirling and Samson Brook Dams.

Our water sources

Our water supply is made up of a combination of sources, including desalinated seawater, groundwater, groundwater replenishment and streamflow. As climate change continues to have a profound impact on our water supply, we must plan our future by securing climate-resilient water sources. Below is a breakdown of our water sources.

You can also learn more about where your water comes from on our Perth's water supply tool.
Desalination icon
%
Desalination
Groundwater icon
%
Groundwater
Dams icon
%
Dams
Groundwater replenishment icon
%
Groundwater replenishment