Perth Weekly Water Update - 15 July 2022
| Target | Actual | |
|---|---|---|
| July water use to date |
1.1 billion litres |
8.5 billion litres |
| Dam storage levels | N/A | 51.9% |
| Monthly streamflow into dams | N/A | 0 billion litres |
| July rainfall to date | 167.7mm (July average rainfall 1876-2016) | 50.2mm |
| 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 575 million litres per day – slightly below the demand forecast of 643 million litres per day.
Daily water use for the last five days
| Date | Actual water use (million litres) | Forecast water use (million litres) |
|---|---|---|
| 14/07/2022 | 586 | 641 |
| 13/07/2022 | 553 | 641 |
| 12/07/2022 | 533 | 641 |
| 11/07/2022 | 556 | 641 |
| 10/07/2022 | 611 | 647 |
| Note: water use is calculated up to 8am each day for the previous 24 hour period. | ||
Since 1 July 2022 to date, we have used 8.5 billion litres of water – which is 7.4 billion litres above the forecast target for this period.
Dam levels (total for 15 dams)
The dam storage levels are slightly up on last week and are sitting at a combined 51.9 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 2022, the dams have received 3.3 billion litres of streamflow. The post-1975 average for the May to April period (called the streamflow year) is 173.9 billion litres.
Annual rainfall
Perth has received 241.2mm of rainfall since 1 January 2022. The average (1876-2016) rainfall for the same period to the end of July is 543.6mm.
General water news
Looking for something to keep the kids occupied these school holidays? Visit one of Water Corporation's water storage dams across WA.
Our dams have great visitor facilities such as picnic areas, walk trails, lookouts and birdlife and are a great spot for a day out.
We have 9 dams within the Darling Range that provide around one fifth of Perth's water supply and most of the water distributed through the Goldfields and Agricultural region.
Just be sure to follow our simple rules when visiting the dams, to help protect our water supply and ensure your family have a fun and safe time.
To find out more about the location of our dams, rules for accessing the dams, facilities available and opening times, visit our webpage.