Water storage and supply report - 27 November 2008


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

 

Warragamba

14 mm

Upper Nepean

7 mm

Woronora

Less than 5 mm

Shoalhaven

20 mm

Blue Mountains

16 mm

As at 3 pm Thursday, 27 November 2008, the inflow rate to Warragamba Dam including Shoalhaven transfers was 385 megalitres per day and to Tallowa Dam was 95 megalitres per day.

The available storage as at 3 pm Thursday, 20 November 2008 was 64.5%.

Date

24 hours to 8 a.m.

As at 3 p.m.

Sydney Max. Temp.

Sydney Rainfall

Bulk Water Supply

Available Storage

% Storage

Fri

21.11.08

28°C

0.2 mm

1 296 ML

1 682 000 ML

64.5%

Sat

22.11.08

28°C

Nil

1 328 ML

1 680 500 ML

64.4%

Sun

23.11.08

21°C

0.3 mm

1 396 ML

1 678 500 ML

64.3%

Mon

24.11.08

20°C

2.0 mm

1 258 ML

1 676 500 ML

64.3%

Tue

25.11.08

22°C

Nil

1 381 ML

1 674 500 ML

64.2%

Wed

26.11.08

22°C

Nil

1 267 ML

1 673 000 ML

64.1%

Thu

27.11.08

22°C

Nil

1 347 ML

1 671 500 ML

64.1%

 

Total supply for the week

9 274 ML

Average daily supply during week

1 325 ML

Volume pumped from Shoalhaven for the week

652 ML

Net weekly storage change (megalitres)

- 11 790 ML

Net weekly storage change (percentage)

- 0.4 %

 

Available water storage as at 27 November 2008

Storage

Full operating storage (ML)

Storage level (m)

Available storage (ML)

Available storage (%)

Net weekly change (ML)

Cataract

94 300

- 2.17

76 970

81.6

- 680

Cordeaux

93 640

- 1.23

84 390

90.1

- 940

Avon

146 700

- 3.07

115 850

79.0

- 850

Nepean

69 810

- 6.87

49 860

71.4

- 1 530

Woronora

71 790

- 10.68

39 590

55.1

- 420

Warragamba

2 027 000

- 12.29

1 215 640

60.0

- 6 100

Prospect

33 300

- 0.30

31 740

95.3

- 210

Wingecarribee

24 100

- 2.00

15 770

65.4

- 70

Fitzroy Falls

10 000

- 0.16

9 220

92.2

770

Tallowa*

35 300*

- 0.66

30 380*

86.1*

-1 780

Blue Mountains

2 790

 

2 200

78.9

20

Total 

2 608 730 

 

1 671 610 

64.1

- 11 790

 

*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 27 November 2008