Water storage and supply report - 14 August 2008

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

Warragamba

5 mm

Upper Nepean

Less than 5 mm

Woronora

Negligible

Shoalhaven

Less than 5 mm

Blue Mountains

5 mm

As at 3 pm Thursday, 14 August 2008, the inflow rate to Warragamba Dam including Shoalhaven transfers was 900 megalitres per day and to Tallowa Dam was 640 megalitres per day.

The available storage as at 3 p.m. Thursday, 7 August 2008 was 66.0 %.

Date

24 hours to 8 a.m.

As at 3 p.m.

Sydney Max. Temp.

Sydney Rainfall

Bulk Water Supply

Available Storage

% Storage

Fri.

8.8.08

17 °C

5.0 mm

1 222 ML

1 723 000 ML

66.0 %

Sat.

9.8.08

19 °C

Nil

1 295 ML

1 724 000 ML

66.1 %

Sun.

10.8.08

17 °C

Nil

1 383 ML

1 724 000 ML

66.1 %

Mon.

11.8.08

16 °C

0.2 mm

1 331 ML

1 723 000 ML

66.0 %

Tue.

12.8.08

16 °C

Nil

1 294 ML

1 722 500 ML

66.0  %

Wed.

13.8.08

16 °C

Nil

1 264 ML

1 722 000 ML

66.0  %

Thu.

14.8.08

15 °C

0.4 mm

1 347 ML

1 721 500 ML

66.0 %

 

Total supply for the week

9 136 ML

Average daily supply during week

1 305 ML

Volume pumped from Shoalhaven for the week

2 749 ML

Net weekly storage change (megalitres)

+ 160 ML

Net weekly storage change (percentage)

0.0  %

 

Available Water Storage as at 14 August 2008

Storage

Full Operating Storage (ML)

Storage Level (m)

Available Storage (ML)

Available Storage (%)

Net Weekly Change (ML)

Cataract

94 300

- 1.12

85 070

90.2

-960

Cordeaux

93 640

- 0.83

87 320

93.3

-370

Avon

146 700

- 2.06

125 660

85.7

-900

Nepean

69 810

- 4.98

54 930

78.7

-750

Woronora

71 790

- 8.81

44 930

61.6

-410

Warragamba

2 027 000

- 12.00

1 231 720

60.8

560

Prospect

33 300

- 0.58

30 310

91.0

-120

Wingecarribee

24 100

- 1.87

16 290

67.6

-200

Fitzroy Falls

10 000

- 0.27

8 660

86.6

-150

Tallowa*

35 300*

+ 0.01

35 300*

100.0*

3 490 

Blue Mountains

2 790

 

2 170

77.8

-30 

Total 

2 608 730 

 

1 721 650

66.0

160


*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 14 August 2008