Bulk water storage and supply report - 7 February 2008

During the week the following rainfall (approximately) was recorded in the catchments:

Warragamba

60 mm  

Upper Nepean

180 mm

Woronora

200 mm

Shoalhaven

105 mm

Blue Mountains

85 mm

As at 3 p.m. Thursday, 7 February 2008, the inflow rate to Warragamba Dam including Shoalhaven transfers was 2,700 megalitres per day and to Tallowa Dam was 5,900 megalitres per day.

 

Date

24 hours to 8 a.m.

As at 3 p.m.

Sydney Max. Temp.

Sydney Rainfall

Bulk Water Supply

Available Storage

% Storage

Fri.

1.2.08

28°C

16.0 mm

1 334 ML

1 577 500 ML

61.0 %

Sat.

2.2.08

22°C

6.0 mm

1 232 ML

1 576 500 ML

61.0 %

Sun.

3.2.08

26°C

7.0 mm

1 367 ML

1 577 000 ML

61.0 %

Mon.

4.2.08

25°C

19.0 mm

1 299 ML

1 580 000 ML

61.1 %

Tue.

5.2.08

23°C

77.0 mm

1 252 ML

1 612 000 ML

62.4 %

Wed.

6.2.08

26°C

2.0 mm

1 134 ML

1 629 000 ML

63.0 %

Thu.

7.2.08

27°C

6.2 mm

1 226 ML

1 669 000 ML

64.0 %

 

Total supply for the week

 8 845 ML

Average daily supply during week

 1 264 ML

Volume pumped from Shoalhaven for the week

 4 427 ML

Net weekly storage change (megalitres)

 93 280 ML

Net weekly storage change (percentage)

+ 3.0 %

 

Available Water Storage as at 7 February 2008

Storage

Full Operating Storage (ML)

Storage Level (m)

Available Storage (ML)

Available Storage (%)

Net Weekly Change (ML)

Cataract

94,300

- 0.11 

93,370 

99.0 

12,450 

Cordeaux

93,640

- 1.07 

85,550 

91.4 

8,840 

Avon

146,700

- 2.49 

121,430 

82.8 

10,090 

Nepean

69,810

- 3.24 

59,870 

85.8 

4,390 

Woronora

71,790

- 9.40 

42,720 

59.5 

5,620 

Warragamba

2,027,000

- 13.13 

1,169,710 

57.7 

21,540 

Prospect#

33,300

- 0.51 

30,670 

92.1 

25,950 

Wingecarribee

24,100

- 1.21 

18,950 

78.6 

1,140 

Fitzroy Falls

10,000

- 0.27 

8,680 

86.8 

220 

Tallowa*

35,300*

+ 0.26 

35,300* 

100.0* 

2,960 

Blue Mountains

2,790

 

2,650 

95.0 

80 

Total

 

2,608,730

 

 

1,668,900 

 

64.0 

 

93,280 

 


*NOTE: The "full operating storage" for Tallowa Dam refers only to the amount of water in the dam that is available to be transferred to Sydney and the Illawarra.  When full, the dam can hold 90,000 ML but only 35,300 ML is available to be transferred.

Other water from Tallowa Dam is provided to Shoalhaven City Council for supply to local communities.  Water is also released from the dam as environmental flows for the Shoalhaven River.

#NOTE: With the completion and commissioning of the new Prospect Raw Water Pumping Station, an additional 24,400 megalitres of water can now be accessed from Prospect Reservoir. This previously inaccessible water has now been added to the full operating storage for Prospect Reservoir.

 

   

 Graph of available storage at 7 February 2008