Bulk water storage and supply report - 19 October 2006

During the week approximately 25 millimetres of rainfall was recorded on the Blue Mountains Catchment and less than 5 millimetres on the Warragamba, Upper Nepean, Woronora and Shoalhaven catchments.

As at 3 p.m. 19 October 2006, the inflow rate to Warragamba Dam including Shoalhaven transfers was 270 megalitres per day and to Tallowa Dam was 100 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.

13.10.06

29°C

Nil

1 614 ML

1 058 500 ML

41.0%

Sat.

14.10.06

37°C

Nil

1 621 ML

1 056 500 ML

40.9%

Sun.

15.10.06

36°C

Nil

1 866 ML

1 054 500 ML

40.8%

Mon.

16.10.06

21°C

8.0 mm

1 541 ML

1 052 500 ML

40.7%

Tue.

17.10.06

18°C

Nil

1 370 ML

1 051 500 ML

40.7%

Wed.

18.10.06

22°C

Nil

1 261 ML

1 050 500 ML

40.6%

Thu.

19.10.06

30°C

Nil

1 403 ML

1 049 500 ML

40.6%

 

Total supply for the week

10 677 ML

Average daily supply during week

1 525 ML

Volume pumped from Shoalhaven for the week

5 600 ML

Net weekly storage change (megalitres)

- 10 520 ML

Net weekly storage change (percentage)

- 0.4%

 

Available Water Storage as at 19 October 2006

Storage

Full Operating Storage (ML)

Storage Level (m)

Available Storage (ML)

Available Storage (%)

Net Weekly Change (ML)

Cataract

94,300

- 9.42

34,020

36.1

-220

Cordeaux

93,640

- 8.32

43,530

46.5

-370

Avon

146,700

- 10.59

52,550

35.8

-800

Nepean

69,810

- 4.88

55,210

79.1

1,950

Woronora

71,790

- 18.37

24,150

33.6

-220

Warragamba

2,027,000

- 21.11

790,380

39.0

-5,780

Prospect

8,870

- 0.97

4,040

45.5

-50

Wingecarribee

24,100

- 1.44

18,000

74.7

540

Fitzroy Falls

10,000

- 0.25

8,780

87.8

1,050

Tallowa*

35,300*

- 2.52

16,860*

47.8*

-6,540

Blue Mountains

2,790

 

2,160

77.4

-80

Total

2,584,300

 

1,049,680

40.6

-10,520


*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.