Bulk water storage and supply report - 3 May 2007

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

  • Warragamba -                 15  mm 
  • Upper Nepean -               10  mm  
  • Woronora -                        5  mm 
  • Shoalhaven  -                   20 mm 
  • Blue Mountains -              10 mm 

As at 3 p.m. Thursday, 3 May 2007, the inflow rate to Warragamba Dam including Shoalhaven transfers was 690 megalitres per day and to Tallowa Dam was 415 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.

27.4.07

22°C

Nil

1 086 ML

  987 500 ML

38.2%

Sat.

28.4.07

19°C

9.0 mm

1 231 ML

  988 000 ML

38.2%

Sun.

29.4.07

20°C

Nil

1 288 ML

  988 000 ML

38.2%

Mon.

30.4.07

24°C

Nil

1 449 ML

  988 500 ML

38.3%

Tue.

1.5.07

23°C

Nil

1 320 ML

  988 000 ML

38.2%

Wed.

2.5.07

23°C

Nil

1 223 ML

  987 000 ML

38.2%

Thu.

3.5.07

27°C

Nil

1 298 ML

  986 000 ML

38.2%

 

Total supply for the week

8 895 ML

Average daily supply during week

1 271 ML

Volume pumped from Shoalhaven for the week

4 353 ML

Net weekly storage change (megalitres)

-2 110 ML

Net weekly storage change (percentage)

0.0 %

 

Available Water Storage as at 3 May 2007

Storage

Full Operating Storage (ML)

Storage Level (m)

Available Storage (ML)

Available Storage (%)

Net Weekly Change (ML)

Cataract

94,300

- 7.72

42,140

44.7

1,720

Cordeaux

93,640

- 8.96

40,680

43.4

630

Avon

146,700

- 7.81

74,010

50.4

0

Nepean

69,810

- 5.68

53,020

75.9

-980

Woronora

71,790

- 17.72

25,260

35.2

290

Warragamba

2,027,000

- 23.47

696,490

34.4

-2,700

Prospect

8,870

- 1.00

3,900

44.0

-60

Wingecarribee

24,100

- 1.24

18,830

78.1

360

Fitzroy Falls

10,000

- 0.46

7,680

76.8

-970

Tallowa*

35,300*

- 1.83

21,760*

61.6*

-380

Blue Mountains

2,790

 

2,280

81.7

-20

Total

2,584,300

 

986,050

38.2

-2,110


*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.