Bulk water storage and supply report - 24 May 2007

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

  • Warragamba –                 35  mm 
  • Upper Nepean –               35  mm 
  • Woronora -                       20 mm 
  • Shoalhaven –                   20  mm 
  • Blue Mountains –             40  mm .

As at 3 p.m. Thursday, 24 May 2007, the inflow rate to Warragamba Dam including Shoalhaven transfers was 450 megalitres per day and to Tallowa Dam was 185 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.

18.5.07

23°C

3.0 mm

1 259 ML

  973 000 ML

37.7%

Sat.

19.5.07

19°C

6.0 mm

1 278 ML

  973 000 ML

37.7%

Sun.

20.5.07

22°C

Nil

1 404 ML

  973 000 ML

37.7%

Mon.

21.5.07

22°C

Nil

1 258 ML

  973 000 ML

37.7%

Tue.

22.5.07

22°C

Nil

1 292 ML

  972 500 ML

37.6%

Wed.

23.5.07

18°C

Nil

1 198 ML

  971 500 ML

37.6%

Thu.

24.5.07

20°C

Nil

1 376 ML

  970 500 ML

37.6%

 

Total supply for the week

9 064 ML

Average daily supply during week

1 295 ML

Volume pumped from Shoalhaven for the week

1 740 ML

Net weekly storage change (megalitres)

-2 340 ML

Net weekly storage change (percentage)

0.0 %

 

Available Water Storage as at 24 May 2007

Storage

Full Operating Storage (ML)

Storage Level (m)

Available Storage (ML)

Available Storage (%)

Net Weekly Change (ML)

Cataract

94,300

- 7.51

43,220

45.8

520

Cordeaux

93,640

- 9.16

39,840

42.5

-210

Avon

146,700

- 7.86

73,600

50.2

80

Nepean

69,810

- 5.78

52,750

75.6

110

Woronora

71,790

- 17.96

24,850

34.6

-80

Warragamba

2,027,000

- 23.71

687,280

33.9

-2,300

Prospect

8,870

- 1.04

3,730

42.1

-20

Wingecarribee

24,100

- 1.31

18,520

76.8

-160

Fitzroy Falls

10,000

- 0.21

8,950

89.5

580

Tallowa*

35,300*

- 2.70

15,600*

44.2*

-840

Blue Mountains

2,790

 

2,160

77.4

-20

Total

2,584,300

 

970,500

37.6

-2,340


*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.