Water storage and supply report - 4 December 2008


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

 

Warragamba

16 mm

Upper Nepean

16 mm

Woronora

30 mm

Shoalhaven

17 mm

Blue Mountains

45 mm

As at 3 pm Thursday, 4 December 2008, the inflow rate to Warragamba Dam including Shoalhaven transfers was 305 megalitres per day and to Tallowa Dam was 260 megalitres per day.

The available storage as at 3 pm Thursday, 27 November 2008 was 64.1%.

Date

24 hours to 8 a.m.

As at 3 p.m.

Sydney Max. Temp.

Sydney Rainfall

Bulk Water Supply

Available Storage

% Storage

Fri

28.11.08

24°C

0.2 mm

1 396 ML

1 671 000 ML

64.1%

Sat

29.11.08

25°C

11.0 mm

1 339 ML

1 670 500 ML

64.0%

Sun

30.11.08

23°C

11.0 mm

1 328 ML

1 670 000 ML

64.0%

Mon

1.12.08

25°C

Nil

1 316 ML

1 669 000 ML

64.0%

Tue

2.12.08

31°C

Nil

1 485 ML

1 668 000 ML

63.9%

Wed

3.12.08

24°C

Nil

1 342 ML

1 666 500 ML

63.9%

Thu

4.12.08

32°C

Nil

1 455 ML

1 665 000 ML

63.8%

 

Total supply for the week

9 662 ML

Average daily supply during week

1 380 ML

Volume pumped from Shoalhaven for the week

652 ML

Net weekly storage change (megalitres)

- 6 810 ML

Net weekly storage change (percentage)

- 0.3 %

 

Available water storage as at 4 December 2008

Storage

Full operating storage (ML)

Storage level (m)

Available storage (ML)

Available storage (%)

Net weekly change (ML)

Cataract

94 300

- 2.20

76 750

81.4

- 220

Cordeaux

93 640

- 1.33

83 670

89.4

- 720

Avon

146 700

- 3.13

115 280

78.6

- 570

Nepean

69 810

- 7.26

48 850

70.0

- 1 010

Woronora

71 790

- 10.81

39 280

54.7

- 310

Warragamba

2 027 000

- 12.35

1 212 310

59.8

- 3 330

Prospect

33 300

- 0.28

31 850

95.6

110

Wingecarribee

24 100

- 2.02

15 690

65.1

- 80

Fitzroy Falls

10 000

- 0.22

8 910

89.1

- 310

Tallowa*

35 300*

- 0.72

29 980*

84.9*

- 400

Blue Mountains

2 790

 

2 230

79.9

30

Total 

2 608 730 

 

1 664 800 

63.8

- 6 810

 

*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 storage at 4 December 2008