Bulk water storage and supply report - 6 April 2006

During the week approximately 5 millimetres of rainfall was recorded on the Warragamba, Shoalhaven and Blue Mountains catchments. The Woronora and Upper Nepean catchments recorded negligible rainfall during the week.

As at 3 p.m. Thursday 6 April 2006, the inflow rates to Warragamba Dam including Shoalhaven transfers was 60 megalitres per day and to Tallowa Dam was 70 megalitres per day.

 

Date

24 hours to 8 a.m.

As at 3 p.m.

Sydney Max. Temp.

Sydney Rainfall

Bulk Water Supply

Available Storage

% Storage

Fri.

31.3.06

29°C

1.0 mm

1 494 ML

  984 500 ML

41.3%

Sat.

1.4.06

25°C

Nil

1 412 ML

  983 000 ML

41.2%

Sun.

2.4.06

21°C

Nil

1 487 ML

  981 000 ML

41.1%

Mon.

3.4.06

23°C

Nil

1 607 ML

  979 500 ML

41.1%

Tue.

4.4.06

25°C

Nil

1 471 ML

  978 000 ML

41.0%

Wed.

5.4.06

28°C

Nil

1 426 ML

  976 500 ML

40.9%

Thu.

6.4.06

31°C

Nil

1 595 ML

  974 500 ML

40.9%

 

Total supply for the week

10 492 ML

Average daily supply during week

1 499 ML

Volume pumped from Shoalhaven for the week

50 ML

Net weekly storage change (megalitres)

-11 070 ML

Net weekly storage change (percentage)

-0.4%

 

Available Water Storage as at 

  6 April 2006

Storage

Full Operating Storage (ML)

Storage Level (m)

Available Storage (ML)

Available Storage (%)

Net Weekly Change (ML)

Cataract

94,300

- 8.77

36,960

39.2

-1,210

Cordeaux

93,640

- 6.56

51,940

55.5

-1,020

Avon

146,700

- 9.45

61,030

41.6

-850

Nepean

40,810

- 12.94

6,550

16.0

-100

Woronora

71,790

- 18.43

24,040

33.5

-240

Warragamba

1,857,000

- 18.14

750,150

40.4

-6,410

Prospect

8,870

- 1.01

3,870

43.6

-100

Wingecarribee

24,100

- 1.78

16,610

68.9

-230

Fitzroy Falls

10,000

- 0.26

8,690

86.9

-260

Tallowa*

35,300*

- 3.15

12,520*

35.5*

-600

Blue Mountains

2,790

 

2,120

76.0

-50

Total

2,385,300

 

974,480

40.9

-11,070


*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.