Bulk water storage and supply report - 30 November 2006


Negligible rainfall was recorded on the SCA’s catchments during the week.

As at 3 p.m. 30 November 2006, the inflow rate to Warragamba Dam was negligible and to Tallowa Dam was 35 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.

24.11.06

23°C

Nil

1 567 ML

  994 500 ML

38.5%

Sat.

25.11.06

24°C

Nil

1 410 ML

  992 000 ML

38.4%

Sun.

26.11.06

25°C

Nil

1 638 ML

  989 500 ML

38.3%

Mon.

27.11.06

24°C

Nil

1 716 ML

  987 500 ML

38.2%

Tue.

28.11.06

24°C

Nil

1 585 ML

  986 000 ML

38.2%

Wed.

29.11.06

29°C

Nil

1 495 ML

  984 500 ML

38.1%

Thu.

30.11.06

24°C

Nil

1 560 ML

  983 000 ML

38.0%

 

Total supply for the week

10 971 ML

Average daily supply during week

1 567 ML

Volume pumped from Shoalhaven for the week

159 ML

Net weekly storage change (megalitres)

- 14 360 ML

Net weekly storage change (percentage)

- 0.6%

 

Available Water Storage as at 30 November 2006

Storage

Full Operating Storage (ML)

Storage Level (m)

Available Storage (ML)

Available Storage (%)

Net Weekly Change (ML)

Cataract

94,300

- 9.94

31,770

33.7

-470

Cordeaux

93,640

- 8.87

41,060

43.8

-480

Avon

146,700

- 9.94

57,330

39.1

300

Nepean

69,810

- 6.78

50,100

71.8

-1,100

Woronora

71,790

- 19.15

22,850

31.8

-240

Warragamba

2,027,000

- 22.45

736,090

36.3

-11,560

Prospect

8,870

- 1.12

3,320

37.4

-140

Wingecarribee

24,100

- 1.57

17,460

72.4

-240

Fitzroy Falls

10,000

- 0.41

7,960

79.6

-260

Tallowa*

35,300*

- 3.09

12,870*

36.5*

-140

Blue Mountains

2,790

 

2,040

73.1

-30

Total

2,584,300

 

982,850

38.0

-14,360


*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.