Bulk water storage and supply report - 30 August 2007

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

Warragamba –

Less than 5 mm

Upper Nepean –

Less than 5 mm

Woronora -

5 mm

Shoalhaven –

Less than 5 mm

Blue Mountains –

Less than 5 mm

As at 3 p.m. Thursday, 30 August 2007, the inflow rate to Warragamba Dam including Shoalhaven transfers was 1,480 megalitres per day and to Tallowa Dam was 675 megalitres per day.

Date

24 hours to 8 a.m.

As at 3 p.m.

Sydney Max. Temp.

Sydney Rainfall

Bulk Water Supply

Available Storage

% Storage

Fri.

24.8.07

16°C

2.0 mm

1 323 ML

1 511 500 ML

58.5%

Sat.

25.8.07

17°C

11.0 mm

1 138 ML

1 514 500 ML

58.6%

Sun.

26.8.07

19°C

0.2 mm

1 461 ML

1 516 000 ML

58.7%

Mon.

27.8.07

24°C

Nil

1 415 ML

1 517 500 ML

58.7%

Tue.

28.8.07

28°C

Nil

1 292 ML

1 518 000 ML

58.7%

Wed.

29.8.07

27°C

Nil

1 218 ML

1 519 000 ML

58.8%

Thu.

30.8.07

20°C

Nil

1 195 ML

1 519 500 ML

58.8%

 

Total supply for the week

      9 042 ML

Average daily supply during week

      1 292 ML

Volume pumped from Shoalhaven for the week

      4 462 ML

Net weekly storage change (megalitres)

   + 11 280 ML

Net weekly storage change (percentage)

+ 0.4 %

 

Available Water Storage as at 30 August 2007

Storage

Full Operating Storage (ML)

Storage Level (m)

Available Storage (ML)

Available Storage (%)

Net Weekly Change (ML)

Cataract

94,300

- 0.73

88,160

93.5

760

Cordeaux

93,640

- 3.89

66,750

71.3

900

Avon

146,700

- 3.80

109,000

74.3

1,120

Nepean

69,810

- 5.10

54,600

78.2

-860

Woronora

71,790

- 10.44

40,160

55.9

380

Warragamba

2,027,000

- 14.68

1,087,920

53.7

9,140

Prospect

8,870

- 0.30

7,330

82.6

300

Wingecarribee

24,100

- 1.19

19,000

78.8

-90

Fitzroy Falls

10,000

- 0.18

9,120

91.2

-260

Tallowa*

35,300*

- 0.03

35,130*

99.5*

-170

Blue Mountains

2,790

 

2,520

90.3

60

Total

2,584,300

 

1,519,690

58.8

11,280


*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.