Bulk water storage and supply report - 29 March 2007

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

  • Warragamba –                 15   mm
  • Upper Nepean –               20   mm
  • Woronora -                       20   mm
  • Shoalhaven –                   20   mm
  • Blue Mountains –             25   mm.

As at 3 p.m. Thursday, 29 March 2007, the inflow rate to Warragamba Dam including Shoalhaven transfers was 1050 megalitres per day and to Tallowa Dam was 775 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.

23.3.07

27°C

Nil

1 289 ML

  994 000 ML

38.5%

Sat.

24.3.07

27°C

Nil

1 394 ML

  993 000 ML

38.4%

Sun.

25.3.07

35°C

19.0 mm

1 477 ML

  993 500 ML

38.4%

Mon.

26.3.07

22°C

1.0 mm

1 341 ML

  994 500 ML

38.5%

Tue.

27.3.07

24°C

1.0 mm

1 281 ML

  995 000 ML

38.5%

Wed.

28.3.07

23°C

Nil

1 177 ML

  995 000 ML

38.5%

Thu.

29.3.07

25°C

Nil

1 463 ML

  994 500 ML

38.5%

 

Total supply for the week

9 421 ML

Average daily supply during week

1 346 ML

Volume pumped from Shoalhaven for the week

7 322 ML

Net weekly storage change (megalitres)

- 550 ML

Net weekly storage change (percentage)

0.0 %

 

Available Water Storage as at 29 March 2007

Storage

Full Operating Storage (ML)

Storage Level (m)

Available Storage (ML)

Available Storage (%)

Net Weekly Change (ML)

Cataract

94,300

- 9.85

32,150

34.1

880

Cordeaux

93,640

- 9.61

37,990

40.6

530

Avon

146,700

- 8.02

72,300

49.3

1,130

Nepean

69,810

- 3.66

58,650

84.0

200

Woronora

71,790

- 19.52

22,250

31.0

-160

Warragamba

2,027,000

- 23.25

704,950

34.8

-770

Prospect

8,870

- 0.37

6,990

78.8

-150

Wingecarribee

24,100

- 1.23

18,870

78.3

60

Fitzroy Falls

10,000

- 0.20

9,030

90.3

700

Tallowa*

35,300*

- 0.84

29,060*

82.3*

-3,000

Blue Mountains

2,790

 

2,230

79.9

30

Total

2,584,300

 

994,470

38.5

-550


*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.