Bulk Water Storage & Supply Report - 20 March 2008

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, 20 March 2008, the inflow rate to Warragamba Dam including Shoalhaven transfers was 650 megalitres per day and to Tallowa Dam was 290 megalitres per day.

The available storage as at 3 p.m. Thursday, 13 March 2008 was 66.4%.

Date

24 hours to 8 a.m.

As at 3 p.m.

Sydney Max. Temp.

Sydney Rainfall

Bulk Water Supply

Available Storage

% Storage

Fri.

14.3.08

26 °C

Nil

1 378 ML

1 730 500 ML

66.3 %

Sat.

15.3.08

26 °C

Nil

1 333 ML

1 729 500 ML

66.3 %

Sun.

16.3.08

26 °C

Nil

1 422 ML

1 728 500 ML

66.3 %

Mon.

17.3.08

26 °C

Nil

1 582 ML

1 727 500 ML

66.2 %

Tue.

18.3.08

25 °C

Nil

1 372 ML

1 726 000 ML

66.2 %

Wed.

19.3.08

27 °C

Nil

1 334 ML

1 725 000 ML

66.1 %

Thu.

20.3.08

27 °C

Nil

1 395 ML

1 724 000 ML

66.1 %

 

Total supply for the week

9,816 ML

Average daily supply during week

1,402 ML

Volume pumped from Shoalhaven for the week

2,335 ML

Net weekly storage change (megalitres)

-7,750 ML

Net weekly storage change (percentage)

-0.3 %

 

Available Water Storage as at 20 March 2008

Storage

Full Operating Storage (ML)

Storage Level (m)

Available Storage (ML)

Available Storage (%)

Net Weekly Change (ML)

Cataract

94,300

-0.41 

90,850

96.3

-840 

Cordeaux

93,640

-0.35 

90,930

97.1

-1,080 

Avon

146,700

-1.60

130,240

88.8

-290 

Nepean

69,810

-1.59

64,810

92.8

-1,230 

Woronora

71,790

-8.91

43,960

61.2

-410 

Warragamba

2,027,000

-12.39 

1,210,090 

59.7 

-2,780 

Prospect

33,300

-0.78

29,320

88.0

-90 

Wingecarribee

24,100

-1.29

18,620

77.3

-260 

Fitzroy Falls

10,000

-0.28

8,600

86.0

30 

Tallowa*

35,300*

-0.13

34,360*

97.3*

-730 

Blue Mountains

2,790

 

2,350 

84.2

-70 

Total 

2,608,730 

 

1,724,130

66.1 

-7,750  


*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.

 

Storage graph 20 March 2008