Bulk water storage and supply report - 15 May 2008

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

Warragamba

7 mm

Upper Nepean

Less than 5 mm

Woronora

Less than 5 mm

Shoalhaven

Negligible

Blue Mountains

6 mm

As at 3 pm Thursday, 15 May 2008, the inflow rate to Warragamba Dam including Shoalhaven transfers was 1,050 megalitres per day and to Tallowa Dam was 210 megalitres per day.

The available storage as at 3 p.m. Thursday, 8 May 2008 was 65.5%.

Date

24 hours to 8 a.m.

As at 3 p.m.

Sydney Max. Temp.

Sydney Rainfall

Bulk Water Supply

Available Storage

% Storage

Fri.

9.5.08

22 °C

0 mm

1 369 ML

1 707 000 ML

65.4 %

Sat.

10.5.08

22 °C

0 mm

1 308 ML

1 706 000 ML

65.4 %

Sun.

11.5.08

21 °C

0 mm

1 355 ML

1 705 000 ML

65.4 %

Mon.

12.5.08

19 °C

0 mm

1 318 ML

1 704 000 ML

65.3 %

Tue.

13.5.08

19 °C

0 mm

1 330 ML

1 703 500 ML

65.3 %

Wed.

14.5.08

20 °C

0 mm

1 222 ML

1 702 500 ML

65.3 %

Thu.

15.5.08

21 °C

0 mm

1 270 ML

1 701 500 ML

65.2 %

 

Total supply for the week

9,172 ML

Average daily supply during week

1,310 ML

Volume pumped from Shoalhaven for the week

5,690 ML

Net weekly storage change (megalitres)

  - 6,810 ML

Net weekly storage change (percentage)

 -0.3 %

 

Available Water Storage as at 15 May 2008

Storage

Full Operating Storage (ML)

Storage Level (m)

Available Storage (ML)

Available Storage (%)

Net Weekly Change (ML)

Cataract

94,300

- 0.64

88,950

94.3

-410

Cordeaux

93,640

- 0.56

89,320

95.4

-770

Avon

146,700

- 1.65

129,740

88.4

-300

Nepean

69,810

- 5.69

52,990

75.9

-900

Woronora

71,790

- 9.20

43,230

60.2

 -380

Warragamba

2,027,000

- 12.27

1,216,750

60.0

-550

Prospect

33,300

- 0.80

29,220

87.7

-30

Wingecarribee

24,100

- 1.52

17,670

73.3

1,020

Fitzroy Falls

10,000

- 0.61

6,940

69.4

-1,260

Tallowa*

35,300*

- 1.44

24,600*

69.7*

 -3,200

Blue Mountains

2,790

 

2,270

81.4

-30

Total 

2,608,730 

 

1,701,680

65.2

-6,810


*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 15 May 2008