Water storage and supply report - 17 July 2008

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

Warragamba

Less than 5 mm

Upper Nepean

Negligible

Woronora

Negligible

Shoalhaven

Negligible

Blue Mountains

Negligible

As at 3 pm Thursday, 17 July 2008, the inflow rate to Warragamba Dam including Shoalhaven transfers was 780 megalitres per day and to Tallowa Dam was 270 megalitres per day.

The available storage as at 3 p.m. Thursday, 10 July 2008 was 66.4%.

Date

24 hours to 8 a.m.

As at 3 p.m.

Sydney Max. Temp.

Sydney Rainfall

Bulk Water Supply

Available Storage

% Storage

Fri.

11.7.08

16 °C

0 mm

1 198 ML

1 733 000 ML

66.4 %

Sat.

12.7.08

17 °C

0 mm

1 265 ML

1 732 000 ML

66.4 %

Sun.

13.7.08

16 °C

0 mm

1 295 ML

1 731 500 ML

66.4 %

Mon.

14.7.08

17 °C

0 mm

1 390 ML

1 730 500 ML

66.3 %

Tue.

15.7.08

23 °C

0 mm

1 222 ML

1 729 500 ML

66.3 %

Wed.

16.7.08

20 °C

0 mm

1 282 ML

1 728 500 ML

66.3 %

Thu.

17.7.08

18 °C

0 mm

1 239 ML

1 727 500 ML

66.2 %

 

Total supply for the week

8 892 ML

Average daily supply during week

1 270 ML

Volume pumped from Shoalhaven for the week

2 781 ML

Net weekly storage change (megalitres)

-5 790 ML

Net weekly storage change (percentage)

 -0.2 %

 

Available Water Storage as at 17 July 2008

Storage

Full Operating Storage (ML)

Storage Level (m)

Available Storage (ML)

Available Storage (%)

Net Weekly Change (ML)

Cataract

94 300

- 0.69

88 540

93.9

-1 150

Cordeaux

93 640

- 0.54

89 490

95.6

-1 060

Avon

146 700

- 1.80

128 250

87.4

-690

Nepean

69 810

- 4.62

55 930

80.1

80

Woronora

71 790

- 8.35

45 400

63.2

 -370

Warragamba

2 027 000

- 11.99

1 232 270

60.8

- 560

Prospect

33 300

- 0.55

30 490

91.6

-70

Wingecarribee

24 100

- 1.69

16 990

70.5

-260

Fitzroy Falls

10 000

- 0.47

7 660

76.6

- 940

Tallowa*

35 300*

- 0.66

30 380*

86.1*

 -740

Blue Mountains

2 790

 

2 260

81.0

-30

Total 

2 608 730 

 

1 727 660

66.2

-5 790


*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 17 July 2008