Perth metro weekly water update – 28 February 2020






February water use to date

29 billion litres

29 billion litres

Dam storage levels


44 per cent

Weekly streamflow into dams


44 billion litres

February rainfall to date

13.0 mm

(February average rainfall 1994-2017)

33.20 mm

Note: 1 billion litres = approx. 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 938 million litres per day, which was below the forecast of 1005 million litres.


Daily water use for the last five days


Actual water use (million litres)

Forecast (million litres)














Data not available

Data not available

Note: water use is calculated up to 8am each day for the previous 24 hour period


Since 1 July 2019, we have used 201.6 billion litres of water – which is 5.9 billion litres over the forecast for this period.


Dam level (total for 15 dams)

The dam storage levels have dropped slightly this week and are sitting at a combined 44.1 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 2019 the dams have received 44.1 billion litres of streamflow.  The post-1975 average for the May to April period (called the streamflow year) is 183.9 billion litres.


Sprinkler roster compliance


The two-day a week sprinkler roster now applies. Since 1 January 2020, we have taken a total of 1583 actions (warnings + fines) compared with 2104 actions for the same period in 2019.


Annual rainfall


Perth has received 33.20 mm of rainfall since 1 January 2019. The average (1994-2017) rainfall for the February period is 29.7 mm.


General water news


Did you know one in three people will need blood or blood products in their lifetime?!


We are proud to retain the title of WA’s largest corporate blood donor thanks to our dedicated staff who rolled up their sleeves and donated blood 1,325 times in 2019 to help save lives.


The healthy competition, which is coordinated by Australian Red Cross Lifeblood, encourages businesses, educational institutes, and community groups to compete with others in their state to be the biggest blood donor.


To roll up your sleeves and donate, contact Australian Red Cross Lifeblood on 13 14 95 or go to

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