Bulk water storage and supply report - 23 November 2006

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

  • Warragamba – Nil
  • Upper Nepean – Nil
  • Woronora - 10 mm
  • Shoalhaven – 5 mm
  • Blue Mountains - Nil.

As at 3 p.m. 23 November 2006, the inflow rate to Warragamba Dam including Shoalhaven transfers was 25 megalitres per day and to Tallowa Dam was 55 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.

17.11.06

17°C

5.0 mm

1 438 ML

1 008 500 ML

39.0%

Sat.

18.11.06

20°C

Nil

1 305 ML

1 007 000 ML

39.0%

Sun.

19.11.06

22°C

Nil

1 653 ML

1 005 000 ML

38.9%

Mon.

20.11.06

23°C

Nil

1 776 ML

1 003 000 ML

38.8%

Tue.

21.11.06

27°C

Nil

1 618 ML

1 001 000 ML

38.7%

Wed.

22.11.06

35°C

Nil

1 633 ML

  999 000 ML

38.7%

Thu.

23.11.06

38°C

Nil

1 793 ML

  997 000 ML

38.6%

 

Total supply for the week

11 215 ML

Average daily supply during week

1 602 ML

Volume pumped from Shoalhaven for the week

0 ML

Net weekly storage change (megalitres)

- 12 750ML

Net weekly storage change (percentage)

- 0.5%

 

Available Water Storage as at 23 November 2006

Storage

Full Operating Storage (ML)

Storage Level (m)

Available Storage (ML)

Available Storage (%)

Net Weekly Change (ML)

Cataract

94,300

- 9.83

32,240

34.2

-510

Cordeaux

93,640

- 8.76

41,540

44.4

-520

Avon

146,700

- 9.98

57,030

38.9

520

Nepean

69,810

- 6.36

51,200

73.3

-1,200

Woronora

71,790

- 19.00

23,090

32.2

-230

Warragamba

2,027,000

- 22.16

747,650

36.9

-9,560

Prospect

8,870

- 1.09

3,460

39.0

-200

Wingecarribee

24,100

- 1.51

17,700

73.4

-350

Fitzroy Falls

10,000

- 0.36

8,220

82.2

-250

Tallowa*

35,300*

- 3.07

13,010*

36.9*

-390

Blue Mountains

2,790

 

2,070

74.2

-60

Total

2,584,300

 

997,210

38.6

-12,750


*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.