Perth metro weekly water update – 15 November 2019

15/11/2019

 

 

Target

Actual

November water use to date

13 billion litres

13 billion litres

Dam storage levels

N/A

51 per cent

Weekly streamflow into dams

N/A

43 billion litres

November rainfall to date

23.2 mm

(November average rainfall 1994-2017)

17.6 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 last week was 965 million litres per day, which was above the forecast of 862 million litres.

 

Daily water use for the last five days

Date

Actual water use (million litres)

Forecast (million litres)

15/11/2019

1045

876

14/11/2019

1014

876

13/11/2019

950

876

12/11/2019

884

876

11/11/2019

930

843

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

 

Since 1 July 2019, we have used 93.7 billion litres of water – which is over the forecast for this period.

 

Dam level (total for 15 dams)

The dam storage levels have remained stable this week and are sitting at a combined 50.6 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 43.1 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 2019, we have taken a total of 7734 actions (warnings + fines) compared with 7636 actions for the same period in 2018.

 

Annual rainfall

 

Perth has received 579.84 mm of rainfall since 1 January 2019. The cumulative average (1994-2017) rainfall for the January to November period is 721.1 mm.

 

General water news

 

Very hot and sunny days like Perth has experienced recently can cause water in backyard pools to evaporate much faster than you might think.

 

To help save precious water, and money, don’t forget to use a pool cover when you’re not using your pool.

 

For other little things you can do to help save water inside and outside your home, visit our water saving tips page: https://www.watercorporation.com.au/save-water/water-saving-tips

 


Media Enquiries:

Contact: Clare Lugar

Position: Manager Media and Strategic Communications

Phone: (08) 9420 2555