Water storage and supply report - 11 December 2008


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

 

Warragamba

Neglible

Upper Nepean

Less than 5 mm

Woronora

8 mm

Shoalhaven

Less than 5 mm

Blue Mountains

10 mm

As at 3 pm Thursday, 11 December 2008, the inflow rate to Warragamba Dam including Shoalhaven transfers was 170 megalitres per day and to Tallowa Dam was 145 megalitres per day.

The available storage as at 3 pm Thursday, 4 December 2008 was 63.8%.

Date

24 hours to 8 a.m.

As at 3 p.m.

Sydney Max. Temp.

Sydney Rainfall

Bulk Water Supply

Available Storage

% Storage

Fri

5.12.08 

22°C

 Nil

1 399 ML

 1 663 000 ML

63.7%

Sat

6.12.08 

27°C

 Nil

1 306 ML

1 661 500 ML

63.7%

Sun

7.12.08 

 35°C

 Nil

1 755 ML

1 660 000 ML

 63.6%

Mon

8.12.08 

 26°C

7.0 mm

1 245 ML

 1 658 500 ML

 63.6%

Tue

9.12.08 

 22°C

2.0 mm

1 376 ML

 1 657 000 ML

 63.5%

Wed

10.12.08 

 26°C

Nil

 1 251 ML

 1 655 500 ML

 63.5%

Thu

11.12.08 

23°C

3.0 mm

1 405 ML

 1 653 500 ML

63.4%

 

Total supply for the week

9 738 ML

Average daily supply during week

 1 391 ML

Volume pumped from Shoalhaven for the week

658 ML

Net weekly storage change (megalitres)

-11 430 ML

Net weekly storage change (percentage)

 -0.4%

 

Available water storage as at 11 December 2008

Storage

Full operating storage (ML)

Storage level (m)

Available storage (ML)

Available storage (%)

Net weekly change (ML)

Cataract

94 300

-2.31 

75 930 

80.5 

-820 

Cordeaux

93 640

-1.50 

82 450 

88.0 

-1 220 

Avon

146 700

-3.21 

114 530 

78.1 

-750 

Nepean

69 810

-7.56 

48 090 

68.9 

-760 

Woronora

71 790

-11.00 

38 830 

54.1 

-450 

Warragamba

2 027 000

-12.47 

1 205 660 

59.5 

-6 650 

Prospect

33 300

-0.31 

31 690 

95.2 

-160 

Wingecarribee

24 100

-2.04 

15 610 

64.8 

-80 

Fitzroy Falls

10 000

-0.27 

8 660 

86.6 

-250 

Tallowa*

35 300*

-0.75 

 29 740*

84.2 *

-240 

Blue Mountains

2 790

 

2 180 

78.1 

-50 

Total 

2 608 730 

 

1 653 370 

63.4 

-11 430 

 

*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 water storage as at 11December 2008