Bulk water storage and supply report - 29 November 2007

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

Warragamba –

40 mm  

Upper Nepean –

15 mm 

Woronora -

40 mm  

Shoalhaven –

35 mm  

Blue Mountains –

110 mm.

As at 3 p.m. Thursday, 29 November 2007, the inflow rate to Warragamba Dam including Shoalhaven transfers was 3,450 megalitres per day and to Tallowa Dam was 1,700 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.

23.11.07

22°C

0.4 mm

1 322 ML

1 507 000 ML

58.3%

Sat.

24.11.07

21°C

0.2 mm

1 124 ML

1 513 000 ML

58.5%

Sun.

25.11.07

26°C

4 mm

1 269 ML

1 515 500 ML

58.6%

Mon.

26.11.07

26°C

Nil

1 432 ML

1 517 000 ML

58.7%

Tue.

27.11.07

25°C

63 mm

1 441 ML

1 517 500 ML

58.7%

Wed.

28.11.07

23°C

5 mm

1 285 ML

1 519 000 ML

58.8%

Thu.

29.11.07

24°C

Nil

1 210 ML

1 520 000 ML

58.8%

 

Total supply for the week

       9 082 ML

Average daily supply during week

       1 297 ML

Volume pumped from Shoalhaven for the week

       3 560 ML

Net weekly storage change (megalitres)

  16 960 ML

Net weekly storage change (percentage)

       + 0.6 %

 

Available Water Storage as at 29 November 2007

Storage

Full Operating Storage (ML)

Storage Level (m)

Available Storage (ML)

Available Storage (%)

Net Weekly Change (ML)

Cataract

94,300

- 1.87

79,270

84.1

-40

Cordeaux

93,640

- 3.19

71,090

75.9

880

Avon

146,700

- 4.03

106,860

72.8

-370

Nepean

69,810

- 4.07

57,480

82.3

-90

Woronora

71,790

- 10.85

39,190

54.6

-40

Warragamba

2,027,000

- 14.52

1,096,260

54.1

14,960

Prospect

8,870

- 0.81

4,810

54.2

-920

Wingecarribee

24,100

- 1.28

18,660

77.4

-170

Fitzroy Falls

10,000

- 0.29

8,560

85.6

-360

Tallowa*

35,300*

+ 0.05

35,300*

100.0*

2,760

Blue Mountains

2,790

 

2,490

89.2

170

Total

2,584,300

 

1,519,970

58.8

16,960


*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.

 

 Graph showing available storage at 29 November 2007