Perth metro weekly water update 8 November 2019

 

	Target	Actual
November water use to date	7 billion litres	6 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 803 million litres per day, which was below the forecast of 830 million litres.

 

Daily water use for the last five days
Date	Actual water use (million litres)	Forecast (million litres)
8/11/2019	894	843
7/11/2019	860	843
6/11/2019	825	843
5/11/2019	788	843
4/11/2019	825	811
Note: water use is calculated up to 8am each day for the previous 24 hour period

 

Since 1 July 2019, we have used 87.1 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 51.1 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 42.6 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 7487 actions (warnings + fines) compared with 7426 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

 

Water Corporation wishes to advise Perth dam picnic areas will be closed for 24 hours from 9am Saturday 9 November to 9am Sunday 10 November.

 

This is due to weather conditions with the Bureau of Meteorology forecasting 40 degree heat and the closure of some national parks by the Department of Parks and Wildlife. For more information, visit http://emergency.wa.gov.au.

 

For your safety, and for the safety of our operators, please avoid these areas and observe all signage.

 

Water Corporation dams closed to the public will be:

• Mundaring Weir

• Victoria Dam

• Churchman Brook Dam

• Canning Dam

• Wungong Dam

• Serpentine Dam

• Serpentine Pipehead Dam

• North Dandalup Dam, and

• South Dandalup Dam

 

Thank you for your cooperation.