Water storage and supply report - 11 September 2008

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

Warragamba

30 mm

Upper Nepean

25 mm

Woronora

60 mm

Shoalhaven

15 mm

Blue Mountains

75 mm

As at 3 pm Thursday, 11 September 2008, the inflow rate to Warragamba Dam including Shoalhaven transfers was 2160 megalitres per day and to Tallowa Dam was 870  megalitres per day.

The available storage as at 3 p.m. Thursday, 4 September 2008 was 65.6%.

Date

24 hours to 8 a.m.

As at 3 p.m.

Sydney Max. Temp.

Sydney Rainfall

Bulk Water Supply

Available Storage

% Storage

Fri.

5.9.08

17 °C

2.0 mm

1 219 ML

1 712 000 ML

65.6 %

Sat.

6.9.08

15 °C

62.0 mm

1 197 ML

1 716 000 ML

65.8 %

Sun.

7.9.08

13 °C

22.0 mm

1 195 ML

1 722 000 ML

66.0 %

Mon.

8.9.08

 19 °C

Nil

1 462 ML

1 726 000 ML

66.2 %

Tue.

9.9.08

17 °C

Nil

1 404 ML

1 728 000 ML

66.2 %

Wed.

10.9.08

16 °C

Nil

1 047 ML

1 730 000 ML

66.3 %

Thu.

11.9.08

 17 °C

Nil

1 278 ML

1 730 500 ML

66.3 %

 

Total supply for the week

8 802 ML

Average daily supply during week

1 257  ML

Volume pumped from Shoalhaven for the week

2 331 ML

Net weekly storage change (megalitres)

18 290 ML

Net weekly storage change (percentage)

 + 0.7  %

 

Available Water Storage as at 11 September 2008

Storage

Full Operating Storage (ML)

Storage Level (m)

Available Storage (ML)

Available Storage (%)

Net Weekly Change (ML)

Cataract

94 300

- 1.32

83 490

88.5

710

Cordeaux

93 640

- 0.88

86 940

92.8

360

Avon

146 700

- 2.21

124 180

84.6

300

Nepean

69 810

- 5.20

54 320

77.8

730

Woronora

71 790

- 8.98

43 790

61.0

540

Warragamba

2 027 000

- 11.76

1 245 040

61.4

16 090

Prospect

33 300

- 0.52

30 620

92.0

280

Wingecarribee

24 100

- 1.86

16 310

67.7

290

Fitzroy Falls

10 000

- 0.40

8 000

80.0

-1 330

Tallowa*

35 300*

+ 0.03

35 300*

100.0*

100

Blue Mountains

2 790

 

2 320

83.2

220

Total 

2 608 730 

 

1 730 310

66.3

18 290


*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 11 September 2008