Bulk water storage and supply report - 1 March 2007

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

  • Warragamba –                    55 mm
  • Upper Nepean –                 60 mm
  • Woronora -                       110 mm
  • Shoalhaven –                     65 mm
  • Blue Mountains –               70 mm.

As at 3 p.m. Thursday, 1 March 2007, the inflow rate to Warragamba Dam including Shoalhaven transfers was 3,200 megalitres per day and to Tallowa Dam was 3,100 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.

23.2.07

27°C

1.0 mm

1 409 ML

  960 500 ML

37.2%

Sat.

24.2.07

27°C

Nil

1 419 ML

  960 000 ML

37.1%

Sun.

25.2.07

27°C

5.0 mm

1 491 ML

  962 000 ML

37.2%

Mon.

26.2.07

23°C

13.0 mm

1 385 ML

  964 000 ML

37.3%

Tue.

27.2.07

24°C

29.0 mm

1 302 ML

  966 500 ML

37.4%

Wed.

28.2.07

26°C

0.2 mm

1 369 ML

  968 000 ML

37.5%

Thu.

1.3.07

27°C

8.0 mm

1 302 ML

  972 500 ML

37.6%

 

Total supply for the week

9 678 ML

Average daily supply during week

1 383 ML

Volume pumped from Shoalhaven for the week

5 926 ML

Net weekly storage change (megalitres)

  + 13 040 ML

Net weekly storage change (percentage)

  + 0.5 %

 

Available Water Storage as at 1 March 2007

Storage

Full Operating Storage (ML)

Storage Level (m)

Available Storage (ML)

Available Storage (%)

Net Weekly Change (ML)

Cataract

94,300

- 11.15

26,930

28.6

940

Cordeaux

93,640

- 10.33

35,150

37.5

930

Avon

146,700

- 8.87

65,520

44.7

3,030

Nepean

69,810

- 3.73

58,450

83.7

340

Woronora

71,790

- 19.36

22,500

31.3

730

Warragamba

2,027,000

- 23.56

693,040

34.2

4,620

Prospect

8,870

- 0.66

5,550

62.6

570

Wingecarribee

24,100

- 1.26

18,730

77.7

450

Fitzroy Falls

10,000

- 0.20

9,020

90.2

570

Tallowa*

35,300*

+ 0.12

35,300*

100.0*

840

Blue Mountains

2,790

 

2,110

75.6

20

Total

2,584,300

 

972,300

37.6

13,040


*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.