Water storage and supply report - 28 August 2008

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

Warragamba

7 mm

Upper Nepean

12 mm

Woronora

23 mm

Shoalhaven

13 mm

Blue Mountains

8  mm

As at 3 pm Thursday, 28 August 2008, the inflow rate to Warragamba Dam including Shoalhaven transfers was 880 megalitres per day and to Tallowa Dam was 420 megalitres per day.

The available storage as at 3 p.m. Thursday, 21 August 2008 was 65.8%.

Date

24 hours to 8 a.m.

As at 3 p.m.

Sydney Max. Temp.

Sydney Rainfall

Bulk Water Supply

Available Storage

% Storage

Fri.

22.8.08

20 °C

3.0 mm

1 284 ML

1 715 500 ML

65.8 %

Sat.

23.8.08

12 °C

21.0 mm

1 244 ML

1 716 000 ML

65.8 %

Sun.

24.8.08

15 °C

Nil

1 346 ML

1 715 500 ML

65.8 %

Mon.

25.8.08

17 °C

Nil

1 373 ML

1 714 500 ML

65.7 %

Tue.

26.8.08

16 °C

Nil

1 255 ML

1 713 500 ML

65.7 %

Wed.

27.8.08

21 °C

Nil

1 267 ML

1 712 500 ML

65.6 %

Thu.

28.8.08

18 °C

2.0 mm

1 276 ML

1 711 500 ML

65.6 %

 

Total supply for the week

9 045 ML

Average daily supply during week

1 292 ML

Volume pumped from Shoalhaven for the week

2 524 ML

Net weekly storage change (megalitres)

- 4 580 ML

Net weekly storage change (percentage)

- 0.2  %

 

Available Water Storage as at 28 August 2008

Storage

Full Operating Storage (ML)

Storage Level (m)

Available Storage (ML)

Available Storage (%)

Net Weekly Change (ML)

Cataract

94 300

- 1.35

83 250

88.3

-710

Cordeaux

93 640

- 0.93

86 580

92.5

-290

Avon

146 700

- 2.21

124 180

84.6

-690

Nepean

69 810

- 5.31

54 020

77.4

-360

Woronora

71 790

- 9.06

43 580

60.7

-280

Warragamba

2 027 000

- 12.04

1 229 500

60.7

-560

Prospect

33 300

- 0.59

30 270

90.9

10

Wingecarribee

24 100

- 1.97

15 880

65.9

-90

Fitzroy Falls

10 000

- 0.55

7 240

72.4

-1 650

Tallowa*

35 300*

- 0.05

34 990*

99.1*

70

Blue Mountains

2 790

 

2 110

75.6

-30

Total 

2 608 730 

 

1 711 600

65.6

-4 580


*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 28 August 2008