Bulk water storage and supply report - 17 May 2007

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

  • Warragamba –              Negligible
  • Upper Nepean –            Negligible
  • Woronora -                    Negligible
  • Shoalhaven –                 Negligible
  • Blue Mountains –           Negligible.  

As at 3 p.m. Thursday, 17 May 2007, the inflow rate to Warragamba Dam including Shoalhaven transfers was 650 megalitres per day and to Tallowa Dam was 200 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.

11.5.07

19°C

0.2 mm

1 220 ML

  979 000 ML

37.9%

Sat.

12.5.07

22°C

Nil

1 333 ML

  978 000 ML

37.8%

Sun.

13.5.07

21°C

Nil

1 331 ML

  977 000 ML

37.8%

Mon.

14.5.07

23°C

Nil

1 464 ML

  976 000 ML

37.8%

Tue.

15.5.07

25°C

Nil

1 241 ML

  975 000 ML

37.7%

Wed.

16.5.07

22°C

Nil

1 346 ML

  974 000 ML

37.7%

Thu.

17.5.07

23°C

Nil

1 262 ML

  972 500 ML

37.6%

 

Total supply for the week

9 197 ML

Average daily supply during week

1 314 ML

Volume pumped from Shoalhaven for the week

3 700 ML

Net weekly storage change (megalitres)

-6 990 ML

Net weekly storage change (percentage)

- 0.3 %

 

Available Water Storage as at 17 May 2007

Storage

Full Operating Storage (ML)

Storage Level (m)

Available Storage (ML)

Available Storage (%)

Net Weekly Change (ML)

Cataract

94,300

- 7.61

42,700

45.3

360

Cordeaux

93,640

- 9.11

40,050

42.8

-460

Avon

146,700

- 7.87

73,520

50.1

-330

Nepean

69,810

- 5.82

52,640

75.4

-160

Woronora

71,790

- 17.91

24,930

34.7

-160

Warragamba

2,027,000

- 23.65

689,580

34.0

-3,460

Prospect

8,870

- 1.03

3,750

42.3

-60

Wingecarribee

24,100

- 1.27

18,680

77.5

0

Fitzroy Falls

10,000

- 0.33

8,370

83.7

-260

Tallowa*

35,300*

- 2.58

16,440*

46.6*

-2,420

Blue Mountains

2,790

 

2,180

78.1

-40

Total

2,584,300

 

972,840

37.6

-6,990


*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.