Bulk water storage and supply report - 31 January 2008

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

Warragamba

5 mm  

Upper Nepean

Less than 5 mm

Woronora

Negligible

Shoalhaven

5 mm

Blue Mountains

15 mm

As at 3 p.m. Thursday, 31 January 2008, the inflow rate to Warragamba Dam including Shoalhaven transfers was 900 megalitres per day and to Tallowa Dam was 330 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.

25.1.08

25°C

Nil

1 407 ML

1 579 500 ML

61.1%

Sat.

26.1.08

25°C

Nil

1 331 ML

1 578 500 ML

61.1%

Sun.

27.1.08

26°C

Nil

1 269 ML

1 578 000 ML

61.1%

Mon.

28.1.08

27°C

Nil

1 438 ML

1 577 000 ML

61.0%

Tue.

29.1.08

27°C

Nil

1 392 ML

1 576 500 ML

61.0%

Wed.

30.1.08

27°C

Nil

1 417 ML

1 576 000 ML

61.0%

Thu.

31.1.08

28°C

Nil

1 479 ML

1 575 500 ML

61.0%

 

Total supply for the week

9 732 ML

Average daily supply during week

1 390 ML

Volume pumped from Shoalhaven for the week

4 408 ML

Net weekly storage change (megalitres)

-3 730 ML

Net weekly storage change (percentage)

- 0.1 %

 

Available Water Storage as at 31 January 2008

Storage

Full Operating Storage (ML)

Storage Level (m)

Available Storage (ML)

Available Storage (%)

Net Weekly Change (ML)

Cataract

94,300

-1.65

80,920

85.8

-540

Cordeaux

93,640

-2.33

76,710

81.9

60

Avon

146,700

-3.55

111,340

75.9

470

Nepean

69,810

-4.78

55,480

79.5

-2,310

Woronora

71,790

-11.76

37,100

51.7

-400

Warragamba

2,027,000

-13.53

1,148,170

56.6

1,070

Prospect

8,870

-0.83

4,720

53.2

-100

Wingecarribee

24,100

-1.49

17,180

73.9

-50

Fitzroy Falls

10,000

-0.31

8,460

84.6

-1,100

Tallowa*

35,300*

-0.40

32,340*

91.6*

-760

Blue Mountains

2,790

 

2,570

92.1

-70

Total

 

2,584,300

 

 

1,575,620

 

61.0

 

-3,730

 


*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.

 

   Available storage at 31 January 2008