Bulk water storage and supply report - 29 May 2008

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

Warragamba

Less than 5 mm

Upper Nepean

Less than 5 mm

Woronora

Less than 5 mm

Shoalhaven

8 mm

Blue Mountains

Less than 5 mm

As at 3 pm Thursday, 29 May 2008, the inflow rate to Warragamba Dam including Shoalhaven transfers was 800 megalitres per day and to Tallowa Dam was 170 megalitres per day.

The available storage as at 3 p.m. Thursday, 22 May 2008 was 65.0%.

Date

24 hours to 8 a.m.

As at 3 p.m.

Sydney Max. Temp.

Sydney Rainfall

Bulk Water Supply

Available Storage

% Storage

Fri.

23.5.08

19 °C

0 mm

1 315 ML

1 694 000 ML

64.9 %

Sat.

24.5.08

18 °C

0 mm

1 271 ML

1 692 500 ML

64.9 %

Sun.

25.5.08

20 °C

0 mm

1 393 ML

1 691 500 ML

64.8 %

Mon.

26.5.08

18 °C

0.4 mm

1 385 ML

1 690 500 ML

64.8 %

Tue.

27.5.08

21 °C

0 mm

1 323 ML

1 689 500 ML

64.8 %

Wed.

28.5.08

22 °C

0 mm

1 255 ML

1 689 000 ML

64.7 %

Thu.

29.5.08

19 °C

1.0 mm

1 316 ML

1 688 500 ML

64.7 %

 

Total supply for the week

9,257 ML

Average daily supply during week

1,322 ML

Volume pumped from Shoalhaven for the week

3,766 ML

Net weekly storage change (megalitres)

  - 6,580 ML

Net weekly storage change (percentage)

 -0.3 %

 

Available Water Storage as at 29 May 2008

Storage

Full Operating Storage (ML)

Storage Level (m)

Available Storage (ML)

Available Storage (%)

Net Weekly Change (ML)

Cataract

94,300

- 0.84

87,220

92.5

-940

Cordeaux

93,640

- 0.81

87,460

93.4

-900

Avon

146,700

- 1.71

129,140

88.0

-300

Nepean

69,810

- 6.40

51,100

73.2

-950

Woronora

71,790

- 9.51

42,440

59.1

 -410

Warragamba

2,027,000

- 12.29

1,215,640

60.0

-550

Prospect

33,300

- 0.82

29,110

87.4

-50

Wingecarribee

24,100

- 1.57

17,460

72.4

90

Fitzroy Falls

10,000

- 0.33

8,340

83.4

-450

Tallowa*

35,300*

- 2.31

18,330*

51.9*

 -2,080

Blue Mountains

2,790

 

2,170

77.8

-40

Total 

2,608,730 

 

1,688,410

64.7

-6,580


*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 storage at 29 May 2008