Bulk water storage and supply report - 17 January 2008

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

Warragamba

20 mm  

Upper Nepean

35 mm

Woronora

15 mm

Shoalhaven

25 mm

Blue Mountains

30 mm

As at 3 p.m. Thursday, 17 January 2008, the inflow rate to Warragamba Dam including Shoalhaven transfers was 900 megalitres per day and to Tallowa Dam was 480 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.

11.1.08

26°C

Nil

1 421 ML

1 566 000 ML

60.6%

Sat.

12.1.08

27°C

Nil

1 505 ML

1 564 500 ML

60.5%

Sun.

13.1.08

27°C

Nil

1 440 ML

1 564 500 ML

60.5%

Mon.

14.1.08

31°C

3.0 mm

1 548 ML

1 565 000 ML

60.6%

Tue.

15.1.08

23°C

1.0 mm

1 322 ML

1 564 000 ML

60.5%

Wed.

16.1.08

25°C

Nil

1 241 ML

1 564 500 ML

60.5%

Thu.

17.1.08

29°C

Nil

1 404 ML

1 565 000 ML

60.6%

 

Total supply for the week

9 881ML

Average daily supply during week

1 412 ML

Volume pumped from Shoalhaven for the week

5 120 ML

Net weekly storage change (megalitres)

- 1 700 ML

Net weekly storage change (percentage)

- 0.0 %

 

Available Water Storage as at 17 January 2008

Storage

Full Operating Storage (ML)

Storage Level (m)

Available Storage (ML)

Available Storage (%)

Net Weekly Change (ML)

Cataract

94,300

- 1.72

80,380

85.2

-150

Cordeaux

93,640

- 2.49

75,110

81.3

470

Avon

146,700

- 3.73

109,660

74.8

750

Nepean

69,810

- 3.19

60,010

86.0

-1,120

Woronora

71,790

- 11.62

37,410

52.1

-370

Warragamba

2,027,000

- 13.75

1,136,400

56.1

530

Prospect

8,870

- 0.84

4,670

52.6

-50

Wingecarribee

24,100

- 1.52

17,660

73.3

100

Fitzroy Falls

10,000

- 0.16

9,210

92.1

1,210

Tallowa*

35,300*

-0.55

31,200*

88.4*

-3,080

Blue Mountains

2,790

 

2,410

86.4

10

Total

2,584,300

 

1,565,120

60.6

-1,700


*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 of available storage at 17 January 2008