Water storage and supply report - 2 October 2008

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

Warragamba

Negligible

Upper Nepean

Negligible

Woronora

Negligible

Shoalhaven

Negligible

Blue Mountains

Negligible

As at 3 pm Thursday, 2 October 2008, the inflow rate to Warragamba Dam including Shoalhaven transfers was 660 megalitres per day and to Tallowa Dam was 270  megalitres per day.

The available storage as at 3 p.m. Thursday, 25 September 2008 was 66.3 %.

Date

24 hours to 8 a.m.

As at 3 p.m.

Sydney Max. Temp.

Sydney Rainfall

Bulk Water Supply

Available Storage

% Storage

Fri.

26.9.08

19°C

Nil

1 285 ML

1 728 000 ML

66.2 %

Sat.

27.9.08

22°C

Nil

1 334 ML

1 727 500 ML

66.2 %

Sun.

28.9.08

25°C

Nil

1 525 ML

1 727 000 ML

66.2 %

Mon.

29.9.08

 33°C

Nil

1 524 ML

1 726 500 ML

66.2 %

Tue.

30.9.08

22°C

0.6 mm

1 446 ML

1 726 000 ML

66.2 %

Wed.

1.10.08

19°C

Nil

1 292 ML

1 725 500 ML

66.1 %

Thu.

2.10.08

25°C

Nil

1 377 ML

1 724 500 ML

66.1 %

 

Total supply for the week

9 784 ML

Average daily supply during week

1 398 ML

Volume pumped from Shoalhaven for the week

1 186 ML

Net weekly storage change (megalitres)

-4 320 ML

Net weekly storage change (percentage)

 - 0.2 %

 

Available Water Storage as at 2 October 2008

Storage

Full Operating Storage (ML)

Storage Level (m)

Available Storage (ML)

Available Storage (%)

Net Weekly Change (ML)

Cataract

94 300

- 1.67

80 770

85.7

-1 310

Cordeaux

93 640

- 0.97

86 280

92.1

-70

Avon

146 700

- 2.47

121 620

82.9

-980

Nepean

69 810

- 5.29

54 080

77.5

140

Woronora

71 790

- 9.37

42 800

59.6

-320

Warragamba

2 027 000

- 11.69

1 248 960

61.6

-2 290

Prospect

33 300

- 0.54

30 510

91.6

50

Wingecarribee

24 100

- 2.09

15 410

63.9

-430

Fitzroy Falls

10 000

- 0.22

8 910

89.1

3 440

Tallowa*

35 300*

- 0.36

32 660*

92.5*

-2 500

Blue Mountains

2 790

 

2 270

81.4

-50

Total 

2 608 730 

 

1 724 270

66.1

-4 320


*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.

Graph of available Water Storage as at 2 October 2008