Bulk water storage and supply report - 3 April 2008

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

Warragamba

Less than 5 mm

Upper Nepean

10 mm

Woronora

25 mm

Shoalhaven

Less than 5 mm

Blue Mountains

Less than 5 mm

As at 3 p.m. Thursday, 3 April 2008, the inflow rate to Warragamba Dam including Shoalhaven transfers was 800 megalitres per day and to Tallowa Dam was 250 megalitres per day.

The available storage as at 3 p.m. Thursday, 27 March 2008 was 66.0%.

Date

24 hours to 8 a.m.

As at 3 p.m.

Sydney Max. Temp.

Sydney Rainfall

Bulk Water Supply

Available Storage

% Storage

Fri.

28.3.08

24°C

Nil

1 256 ML

1 722 000 ML

66.0 %

Sat.

29.3.08

22°C

0.2 mm

1 301 ML

1 721 500 ML

66.0 %

Sun.

30.3.08

23°C

0.4 mm

1 260 ML

1 721 000 ML

66.0 %

Mon.

31.3.08

27°C

Nil

1 444 ML

1 719 500 ML

65.9 %

Tue.

1.4.08

26°C

Nil

1 431 ML

1 718 500 ML

65.9 %

Wed.

2.4.08

24°C

Nil

1 266 ML

1 717 500 ML

65.8 %

Thu.

3.4.08

29°C

Nil

1 349 ML

1 716 500 ML

65.8 %

 

Total supply for the week

9,306 ML

Average daily supply during week

1,329 ML

Volume pumped from Shoalhaven for the week

2,558 ML

Net weekly storage change (megalitres)

- 6,300 ML

Net weekly storage change (percentage)

- 0.2 %

 

Available Water Storage as at 3 April 2008

Storage

Full Operating Storage (ML)

Storage Level (m)

Available Storage (ML)

Available Storage (%)

Net Weekly Change (ML)

Cataract

94,300

- 0.59

83,360

94.8

- 910

Cordeaux

93,640

- 0.59

89,110

95.2

- 1,140

Avon

146,700

- 1.65

129,740

88.4

-600

Nepean

69,810

- 2.40

62,350

89.3

- 1,210

Woronora

71,790

- 9.12

43,430

60.5

- 280

Warragamba

2,027,000

- 12.37

1,211,200

59.8

0

Prospect

33,300

- 0.79

29,280

87.9

- 150

Wingecarribee

24,100

- 1.58

17,410

72.2

- 890

Fitzroy Falls

10,000

- 0.14

9,350

93.5

720

Tallowa*

35,300*

- 0.28

33,240*

94.2*

- 1,780 

Blue Mountains

2,790

 

2,270

81.4

- 60

Total 

2,608,730 

 

1,716,740

65.8

- 6,300


*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 3 April 2008