Bulk water storage and supply report - 13 March 2008

During the week the following average rainfall was recorded in the catchments:

Warragamba

10 mm  

Upper Nepean

15 mm

Woronora

10 mm

Shoalhaven

20 mm

Blue Mountains

15 mm

As at 3 p.m. Thursday, 13 March 2008, the inflow rate to Warragamba Dam including Shoalhaven transfers was 700 megalitres per day and to Tallowa Dam was 400 megalitres per day.

The available storage as at 3pm Thursday 6 March 2008 was 66.5%.

 

Date

24 hours to 8 a.m.

As at 3 p.m.

Sydney Max. Temp.

Sydney Rainfall

Bulk Water Supply

Available Storage

% Storage

Fri.

7.3.08

25 °C

Nil

1 341 ML

1 734 000 ML

66.5 %

Sat.

8.3.08

25 °C

17.0 mm

1 328 ML

1 735 500 ML

66.5 %

Sun.

9.3.08

25 °C

Nil

1 296 ML

1 734 500 ML

66.5 %

Mon.

10.3.08

24 °C

Nil

1 456 ML

1 734 000 ML

66.5 %

Tue.

11.3.08

26 °C

Nil

1 321 ML

1 733 500 ML

66.4 %

Wed.

12.3.08

26 °C

Nil

1 293 ML

1 732 500 ML

66.4 %

Thu.

13.3.08

26 °C

Nil

1 777 ML

1 732 000 ML

66.4 %

 

Total supply for the week

9 813 ML

Average daily supply during week

1 402 ML

Volume pumped from Shoalhaven for the week

2 966 ML

Net weekly storage change (megalitres)

-2 540 ML

Net weekly storage change (percentage)

-0.1 %

 

Available Water Storage as at 13 March 2008

Storage

Full Operating Storage (ML)

Storage Level (m)

Available Storage (ML)

Available Storage (%)

Net Weekly Change (ML)

Cataract

94,300

-0.31 

91 690

97.2

-500 

Cordeaux

93,640

-0.21 

92 010

98.3

-390 

Avon

146,700

-1.57

130 530

89.0

0 

Nepean

69,810

-1.19

66 040

94.6

-1 060 

Woronora

71,790

-8.75

44 370

61.8

-310 

Warragamba

2,027,000

 -12.34

 1 212 870

 59.8

0 

Prospect

33,300

-0.76

29 410

88.3

190 

Wingecarribee

24,100

-1.22

18 880

78.3

-130 

Fitzroy Falls

10,000

-0.29

8 570

85.7

-80 

Tallowa*

35,300*

-0.03

35 090*

99.4*

-210 

Blue Mountains

2,790

 

 2 420

86.7

-50 

Total

 

2,608,730

 

 

1 731 880

 

 66.4

 

-2 540 

 


*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 13 March 2008