Water storage and supply report - 10 July 2008

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

Warragamba

10 mm

Upper Nepean

10 mm

Woronora

15 mm

Shoalhaven

6 mm

Blue Mountains

15 mm

As at 3 pm Thursday, 10 July 2008, the inflow rate to Warragamba Dam including Shoalhaven transfers was 930 megalitres per day and to Tallowa Dam was 350 megalitres per day.

The available storage as at 3 p.m. Thursday, 3 July 2008 was 66.5%.

Date

24 hours to 8 a.m.

As at 3 p.m.

Sydney Max. Temp.

Sydney Rainfall

Bulk Water Supply

Available Storage

% Storage

Fri.

4.7.08

18 °C

1.0 mm

1 239 ML

1 735 000 ML

66.5 %

Sat.

5.7.08

15 °C

14.0 mm

1 253 ML

1 734 500 ML

66.5 %

Sun.

6.7.08

17 °C

0 mm

1 346 ML

1 734 000 ML

66.5 %

Mon.

7.7.08

18 °C

0 mm

1 364 ML

1 733 500 ML

66.4 %

Tue.

8.7.08

20 °C

0.2 mm

1 221 ML

1 733 500 ML

66.4 %

Wed.

9.7.08

17 °C

0 mm

1 183 ML

1 733 500 ML

66.4 %

Thu.

10.7.08

13 °C

2.0 mm

1 234 ML

1 733 500 ML

66.4 %

 

Total supply for the week

8 841 ML

Average daily supply during week

1 263 ML

Volume pumped from Shoalhaven for the week

2 760 ML

Net weekly storage change (megalitres)

-2 220 ML

Net weekly storage change (percentage)

 -0.1 %

 

Available Water Storage as at 10 July 2008

Storage

Full Operating Storage (ML)

Storage Level (m)

Available Storage (ML)

Available Storage (%)

Net Weekly Change (ML)

Cataract

94 300

- 0.55

89 690

95.1

-1 000

Cordeaux

93 640

- 0.40

90 550

96.7

-840

Avon

146 700

- 1.73

128 940

87.9

-700

Nepean

69 810

- 4.65

55 850

80.0

950

Woronora

71 790

- 8.21

45 770

63.8

 -310

Warragamba

2 027 000

- 11.98

1 232 830

60.8

560

Prospect

33 300

- 0.53

30 560

91.8

50

Wingecarribee

24 100

- 1.63

17 250

71.6

-680

Fitzroy Falls

10 000

- 0.28

8 600

86.0

380

Tallowa*

35 300*

- 0.56

31 120*

88.2*

 -620

Blue Mountains

2 790

 

2 290

82.1

-10

Total 

2 608 730 

 

1 733 450

66.4

-2 220


*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 10 July 2008