Bulk water storage and supply report - 8 February 2007

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

  • Warragamba –               5 mm
  • Upper Nepean –             Less than  5 mm
  • Woronora -                     5 mm
  • Shoalhaven –                10 mm
  • Blue Mountains –          20 mm.

As at 3 p.m. Thursday, 8 February 2007, the inflow rate to Warragamba Dam was negligible and to Tallowa Dam was 20 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.

2.2.07

23°C

2.0 mm

1 417 ML

  885 500 ML

34.3%

Sat.

3.2.07

25°C

Nil

1 380 ML

  884 000 ML

34.2%

Sun.

4.2.07

25°C

Nil

1 649 ML

  882 500 ML

34.1%

Mon.

5.2.07

27°C

Nil

1 859 ML

  880 500 ML

34.1%

Tue.

6.2.07

25°C

Nil

1 543 ML

  878 500 ML

34.0%

Wed.

7.2.07

27°C

Nil

1 351 ML

  877 000 ML

33.9%

Thu.

8.2.07

26°C

1.0 mm

1 519 ML

  875 500 ML

33.9%

 

 

Total supply for the week

10 718 ML

Average daily supply during week

1 531 ML

Volume pumped from Shoalhaven for the week

0 ML

Net weekly storage change (megalitres)

  - 11 230ML

Net weekly storage change (percentage)

  - 0.4 %

 

Available Water Storage as at 8 February 2007

Storage

Full Operating Storage (ML)

Storage Level (m)

Available Storage (ML)

Available Storage (%)

Net Weekly Change (ML)

Cataract

94,300

- 12.13

23,370

24.8

-1,020

Cordeaux

93,640

- 11.36

31,370

33.5

-840

Avon

146,700

- 10.49

53,270

36.3

-510

Nepean

69,810

- 7.48

48,290

69.2

-280

Woronora

71,790

- 20.55

20,650

28.8

-260

Warragamba

2,027,000

- 24.48

658,740

32.5

-7,770

Prospect

8,870

- 0.97

4,040

45.5

240

Wingecarribee

24,100

- 2.22

14,930

62.0

-280

Fitzroy Falls

10,000

- 0.96

5,260

52.6

-740

Tallowa*

35,300*

- 2.97

13,740*

38.9*

240

Blue Mountains

2,790

 

2,000

71.7

-10

Total

2,584,300

 

875,660

33.9

-11,230


*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.