Bulk water storage and supply report - 15 February 2007

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

  • Warragamba –                 70 mm
  • Upper Nepean –            175 mm
  • Woronora -                    140 mm
  • Shoalhaven –                 145 mm
  • Blue Mountains –           130 mm.

As at 3 p.m. Thursday, 15 February 2007, the inflow rate to Warragamba Dam including Shoalhaven transfers was 1,750 megalitres per day and to Tallowa Dam was 1,800 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.

9.2.07

27°C

0.2 mm

1 445 ML

  874 000 ML

33.8%

Sat.

10.2.07

28°C

Nil

1 454 ML

  872 500 ML

33.8%

Sun.

11.2.07

28°C

Nil

1 447 ML

  877 000 ML

33.9%

Mon.

12.2.07

26°C

33.0 mm

1 584 ML

  913 000 ML

35.3%

Tue.

13.2.07

23°C

22.0 mm

1 212 ML

  946 000 ML

36.6%

Wed.

14.2.07

25°C

Nil

1 277 ML

  953 500 ML

36.9%

Thu.

15.2.07

27°C

Nil

1 392 ML

  955 500 ML

37.0%

 

Total supply for the week

9 810 ML

Average daily supply during week

1 401 ML

Volume pumped from Shoalhaven for the week

3 360 ML

Net weekly storage change (megalitres)

  + 79 740ML

Net weekly storage change (percentage)

  + 3.1 %

 

Available Water Storage as at 15 February 2007

Storage

Full Operating Storage (ML)

Storage Level (m)

Available Storage (ML)

Available Storage (%)

Net Weekly Change (ML)

Cataract

94,300

- 11.17

26,850

28.5

3,480

Cordeaux

93,640

- 10.62

34,060

36.4

2,690

Avon

146,700

- 9.50

60,650

41.3

7,380

Nepean

69,810

- 3.81

58,220

83.4

9,930

Woronora

71,790

- 19.69

21,980

30.6

1,330

Warragamba

2,027,000

- 23.74

686,160

33.9

27,420

Prospect

8,870

- 0.83

4,740

53.4

700

Wingecarribee

24,100

- 1.46

17,900

74.3

2,970

Fitzroy Falls

10,000

- 0.52

7,390

73.9

2,130

Tallowa*

35,300*

+ 0.02

35,300*

100.0*

21,560

Blue Mountains

2,790

 

2,150

77.1

150

Total

2,584,300

 

955,400

37.0

79,740


*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.