Target Actual
February water use to date 26.5 billion litres
26.2 billion litres
Dam storage levels N/A 44.3%
Monthly streamflow into dams N/A 0 billion litres
February rainfall to date 12.5mm (January average rainfall 1876-2016) 38.6mm
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 1,047 million litres per day, which was above the forecast of 1,003 million litres

Daily water use for the last 5 days

Table showing daily water use for the last 5 days
Date Actual water use (million litres) Forecast water use (million litres)
26/02/2021 1,014 995
25/02/2021 1,050 995
24/02/2021 1,106 995
23/02/2021 1,099 995
22/02/2021 1,130 1,012
Note, water use is calculated up to 8am each day for the previous 24 hour period.

Since 1 July 2020 to date, we have used 195.17 billion litres of water – which is 1.27 billion litres below the forecast target for this period.


Dam levels (total for 15 dams)

The dam storage levels have decreased slightly this week and are sitting at a combined 44.3 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 2020 the dams have received 42.5 billion litres of streamflow.  The post-1975 average for the May to April period (called the streamflow year) is 175.79 billion litres.


Sprinkler roster compliance

Since 1 January 2021, we have taken a total of 1,069 actions (warnings + fines) compared with 1,583 actions for the same period in 2020.


Annual rainfall

Perth has received 38.8 mm of rainfall since 1 January 2021. The average (1994-2019) rainfall for the same period to the end of February is 31.8 mm.


General water news

Being waterwise is everyone’s business, and we work with all sectors of the community to help support water efficient behaviours.


Watch the video and see how one of our Platinum Waterwise Businesses, Perth Zoo, is saving water, and why it’s so important to their business.