Bulk water storage and supply report - 4 October 2007

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

Warragamba –

Nil

Upper Nepean –

Nil

Woronora –

Nil

Shoalhaven –

Nil

Blue Mountains –

Nil.

As at 3 p.m. Thursday, 4 October 2007, the inflow rate to Warragamba Dam including Shoalhaven transfers was 540 megalitres per day and to Tallowa Dam was 230 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.

28.9.07

28°C

Nil

1 254 ML

1 521 500 ML

58.9%

Sat.

29.9.07

29°C

Nil

1 354 ML

1 520 000 ML

58.8%

Sun.

30.9.07

23°C

Nil

1 354 ML

1 518 500 ML

58.8%

Mon.

1.10.07

27°C

Nil

1 544 ML

1 517 000 ML

58.7%

Tue.

2.10.07

30°C

Nil

1 428 ML

1 515 500 ML

58.6%

Wed.

3.10.07

24°C

Nil

1 478 ML

1 514 000 ML

58.6%

Thu.

4.10.07

35°C

Nil

1 538 ML

1 513 000 ML

58.5%

 

Total supply for the week

      9 950 ML

Average daily supply during week

      1 421 ML

Volume pumped from Shoalhaven for the week

      3 634ML

Net weekly storage change (megalitres)

   - 9 480 ML

Net weekly storage change (percentage)

- 0.4 %

 

Available Water Storage as at 4 October 2007

Storage

Full Operating Storage (ML)

Storage Level (m)

Available Storage (ML)

Available Storage (%)

Net Weekly Change (ML)

Cataract

94,300

- 1.41

82,780

87.8

-1,660

Cordeaux

93,640

- 3.68

68,030

72.7

-60

Avon

146,700

- 3.85

108,540

74.0

-560

Nepean

69,810

- 4.10

57,390

82.2

80

Woronora

71,790

- 10.47

40,090

55.8

-210

Warragamba

2,027,000

- 14.64

1,090,000

53.8

-3,650

Prospect

8,870

- 0.32

7,240

81.6

-110

Wingecarribee

24,100

- 1.52

17,670

73.3

-690

Fitzroy Falls

10,000

- 0.27

8,680

86.8

1,340

Tallowa*

35,300*

- 0.70

30,100*

85.3*

-3,860

Blue Mountains

2,790

 

2,340

83.9

-100

Total

2,584,300

 

1,512,860

58.5

-9,480


*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.