Navigate home logo
Table showing target and actual water use, dam levels, streamflow and rainfall
Target Actual
February water use to date

16.5 billion litres

18.4 billion litres
Dam storage levels N/A 54.9%
Monthly streamflow into dams N/A 0 billion litres
February rainfall to date 12.5mm (January average rainfall 1876-2016) 1.6mm
Note: 1 billion litres = approximately 400 Olympic swimming pools. Please note the figures in this table are rounded (except for rainfall) to the nearest whole number.

Water use 

Average water use over the past week was 1,151 million litres per day – slightly above the demand forecast of 1,021 million litres per day.

Daily water use for the last five days

Table showing daily water use for the last 5 days
Date Actual water use (million litres) Forecast water use (million litres)
17/02/2022 1219 1015
16/02/2022 1142 1015
15/02/2022 1226 1015
14/02/2022 1148 1028
13/02/2022 1008 1028
Note: water use is calculated up to 8am each day for the previous 24 hour period.

Since 1 July 2021 to date, we have used 194.56 billion litres of water – which is 5.71 billion litres above the forecast target for this period.

Dam levels (total for 15 dams)

The dam storage levels are slightly down on last week and are sitting at a combined 54.9 per cent* of full capacity.

*Please note some dams are filled from different sources - dam levels include the transfer of groundwater and desalinated seawater from treatment plants as well as streamflow (that comes from rainfall). As we use many different sources of water, dams are no longer an accurate indicator of the health of Perth's overall water supply situation.

Streamflow (total for 15 dams)

From 1 May 2021, the dams have received 138.7 billion litres of streamflow. The post-1975 average for the May to April period (called the streamflow year) is 175.4 billion litres.

Sprinkler roster compliance

Since 1 January 2022, we have taken a total of 1050 actions (warnings + fines) compared with 932 actions for the same period in 2021.

Annual rainfall

Perth has received 1.6mm of rainfall since 1 January 2022. The average (1876-2016) rainfall for the same period to the end of January is 22.2mm.

General water news

It’s been a tough period for Western Australians living in bushfire-affected regions of our state. At one stage, an unprecedented four Level 3 bushfires were burning simultaneously across the South West, Great Southern and Wheatbelt.


On behalf of everyone at Water Corporation, our thoughts go out to those affected. We would like to extend our heartfelt appreciation and support to career and volunteer firefighters, local shires and all those involved in protecting lives and homes.


We would also like to thank those Water Corporation crews who worked tirelessly to support firefighting efforts and maintain water supply to impacted communities. In some areas, repair and recovery efforts are ongoing and we are working hard to ensure things can return to normal as soon as possible.


In case you missed it, Water Corporation has joined with Western Power and Synergy to offer financial support to those affected by recent bushfires. To learn more about assistance for Water Corporation customer and for information on how to apply click here.