Bulk water storage and supply report - 19 June 2008

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

Warragamba

Less than 5 mm

Upper Nepean

Less than 5 mm

Woronora

5 mm

Shoalhaven

10 mm

Blue Mountains

5 mm

As at 3 pm Thursday, 19 June 2008, the inflow rate to Warragamba Dam including Shoalhaven transfers was 1,200 megalitres per day and to Tallowa Dam was 700 megalitres per day.

The available storage as at 3 p.m. Thursday, 12 June 2008 was 66.3%.

Date

24 hours to 8 a.m.

As at 3 p.m.

Sydney Max. Temp.

Sydney Rainfall

Bulk Water Supply

Available Storage

% Storage

Fri.

13.6.08

22 °C

0 mm

1 235 ML

1 729 500 ML

66.3 %

Sat.

14.6.08

19 °C

0 mm

1 245 ML

1 730 500 ML

66.3 %

Sun.

15.6.08

15 °C

0 mm

1 309 ML

1 731 500 ML

66.4 %

Mon.

16.6.08

15 °C

7.0 mm

1 298 ML

1 732 000 ML

66.4 %

Tue.

17.6.08

17 °C

3.4 mm

1 205 ML

1 732 500 ML

66.4 %

Wed.

18.6.08

17 °C

0 mm

1 222 ML

1 733 500 ML

66.4 %

Thu.

19.6.08

19 °C

0 mm

1 214 ML

1 734 000 ML

66.5 %

 

Total supply for the week

8 727 ML

Average daily supply during week

1 247 ML

Volume pumped from Shoalhaven for the week

4 949 ML

Net weekly storage change (megalitres)

  5 300 ML

Net weekly storage change (percentage)

 +0.2 %

 

Available Water Storage as at 19 June 2008

Storage

Full Operating Storage (ML)

Storage Level (m)

Available Storage (ML)

Available Storage (%)

Net Weekly Change (ML)

Cataract

94,300

- 0.08

93,620

99.3

-680

Cordeaux

93,640

- 0.22

91,930

98.2

610

Avon

146,700

- 1.59

130,340

88.8

-190

Nepean

69,810

- 5.93

52,350

75.0

1,250

Woronora

71,790

- 7.82

46,800

65.2

 -50

Warragamba

2,027,000

- 12.06

1,228,390

60.6

2,770

Prospect

33,300

- 0.54

30,510

91.6

-110

Wingecarribee

24,100

- 1.44

17,990

74.6

-330

Fitzroy Falls

10,000

- 0.19

9,060

90.6

670

Tallowa*

35,300*

- 0.62

30,660*

86.9*

 1,400

Blue Mountains

2,790

 

2,330

83.5

-40

Total 

2,608,730 

 

1,733,980

66.5

5,300


*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.

 

 Graph of available storage at 19 June 2008