Bulk water storage and supply report - 26 October 2006

Less than 5 millimetres of rainfall was recorded on the SCA’s catchments during the week.

As at 3 p.m. 26 October 2006, the inflow rate to Warragamba Dam including Shoalhaven transfers was 130 megalitres per day and to Tallowa Dam was 75 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.

20.10.06

25°C

Nil

1 520 ML

1 048 500 ML

40.6%

Sat.

21.10.06

29°C

5.0 mm

1 375 ML

1 046 500 ML

40.5%

Sun.

22.10.06

16°C

Nil

1 436 ML

1 044 500 ML

40.4%

Mon.

23.10.06

18°C

0.2 mm

1 606 ML

1 043 000 ML

40.4%

Tue.

24.10.06

21°C

Nil

1 411 ML

1 041 500 ML

40.3%

Wed.

25.10.06

23°C

Nil

1 425 ML

1 040 500 ML

40.3%

Thu.

26.10.06

26°C

0.6 mm

1 493 ML

1 039 000 ML

40.2%

 

Total supply for the week

10 266 ML

Average daily supply during week

1 467 ML

Volume pumped from Shoalhaven for the week

2 450 ML

Net weekly storage change (megalitres)

- 10 480ML

Net weekly storage change (percentage)

- 0.4%

 

Available Water Storage as at 26 October 2006

Storage

Full Operating Storage (ML)

Storage Level (m)

Available Storage (ML)

Available Storage (%)

Net Weekly Change (ML)

Cataract

94,300

- 9.51

33,620

35.7

-400

Cordeaux

93,640

- 8.41

43,120

46.0

-410

Avon

146,700

- 10.46

53,490

36.5

940

Nepean

69,810

- 4.64

55,870

80.0

660

Woronora

71,790

- 18.51

23,910

33.3

-240

Warragamba

2,027,000

- 21.30

782,530

38.6

-7,850

Prospect

8,870

- 1.00

3,900

44.0

-140

Wingecarribee

24,100

- 1.56

17,520

72.7

-480

Fitzroy Falls

10,000

- 0.57

7,150

71.5

-1,630

Tallowa*

35,300*

- 2.65

15,950*

45.2*

-910

Blue Mountains

2,790

 

2,140

76.7

-20

Total

2,584,300

 

1,039,200

40.2

-10,480


*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.