Bulk water storage and supply report - 10 April 2008

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

Warragamba

10 mm

Upper Nepean

15 mm

Woronora

45 mm

Shoalhaven

5 mm

Blue Mountains

50 mm

As at 3 p.m. Thursday, 10 April 2008, the inflow rate to Warragamba Dam including Shoalhaven transfers was 900 megalitres per day and to Tallowa Dam was 250 megalitres per day.

The available storage as at 3 p.m. Thursday, 3 April 2008 was 65.8%.

Date

24 hours to 8 a.m.

As at 3 p.m.

Sydney Max. Temp.

Sydney Rainfall

Bulk Water Supply

Available Storage

% Storage

Fri.

4.4.08

22°C

Nil

1 329 ML

1 715 000 ML

65.7 %

Sat.

5.4.08

22°C

Nil

1 373 ML

1 714 000 ML

65.7 %

Sun.

6.4.08

21°C

Nil

1 379 ML

1 713 000 ML

65.7 %

Mon.

7.4.08

23°C

12.0 mm

1 525 ML

1 711 500 ML

65.6 %

Tue.

8.4.08

22°C

10.0 mm

1 261 ML

1 711 000 ML

65.6 %

Wed.

9.4.08

22°C

23.0 mm

1 226 ML

1 711 500 ML

65.6 %

Thu.

10.4.08

22°C

2.0 mm

1 196 ML

1 711 000 ML

65.6 %

 

Total supply for the week

9,289 ML

Average daily supply during week

1,327 ML

Volume pumped from Shoalhaven for the week

54 ML

Net weekly storage change (megalitres)

- 5,740 ML

Net weekly storage change (percentage)

- 0.2 %

 

Available Water Storage as at 10 April 2008

Storage

Full Operating Storage (ML)

Storage Level (m)

Available Storage (ML)

Available Storage (%)

Net Weekly Change (ML)

Cataract

94,300

- 0.76

87,870

93.2

- 1,490

Cordeaux

93,640

- 0.56

89,340

95.4

230

Avon

146,700

- 1.68

129,440

88.2

-300

Nepean

69,810

- 2.90

60,870

87.2

- 1,480

Woronora

71,790

- 9.20

43,230

60.2

- 200

Warragamba

2,027,000

- 12.38

1,210,650

59.7

- 550

Prospect

33,300

- 0.80

29,210

87.7

- 70

Wingecarribee

24,100

- 2.36

14,380

59.7

- 3,030

Fitzroy Falls

10,000

- 0.15

9,300

93.0

- 50

Tallowa*

35,300*

- 0.12

34,480*

97.7*

 1,240

Blue Mountains

2,790

 

2,230

79.9

- 40

Total 

2,608,730 

 

1,711,000

65.6

- 5,740


*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 10 April 2008