Bulk water storage and supply report - 13 April 2006


Negligible rainfall was recorded on the SCA’s catchments during the week.

As at 3 p.m. Thursday 13 April 2006, the inflow rates to Warragamba Dam including Shoalhaven transfers was 70 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.

7.4.06

23°C

Nil

1 583 ML

  972 500 ML

40.8%

Sat.

8.4.06

26°C

Nil

1 569 ML

  970 500 ML

40.7%

Sun.

9.4.06

24°C

Nil

1 524 ML

  968 500 ML

40.6%

Mon.

10.4.06

23°C

Nil

1 850 ML

  966 500 ML

40.5%

Tue.

11.4.06

23°C

Nil

1 574 ML

  964 500 ML

40.4%

Wed.

12.4.06

30°C

Nil

1 446 ML

  962 500 ML

40.4%

Thu.

13.4.06

33°C

Nil

1 739 ML

  960 500 ML

40.3%

 

Total supply for the week

11 286 ML

Average daily supply during week

1 612 ML

Volume pumped from Shoalhaven for the week

100 ML

Net weekly storage change (megalitres)

-14 000 ML

Net weekly storage change (percentage)

-0.6%

 

Available Water Storage as at 

  13 April 2006

Storage

Full Operating Storage (ML)

Storage Level (m)

Available Storage (ML)

Available Storage (%)

Net Weekly Change (ML)

Cataract

94,300

- 9.21

34,950

37.1

-2,010

Cordeaux

93,640

- 6.66

51,440

54.9

-500

Avon

146,700

- 9.62

59,740

40.7

-1,290

Nepean

40,810

- 12.52

7,440

18.2

890

Woronora

71,790

- 18.59

23,770

33.1

-270

Warragamba

1,857,000

- 18.33

741,450

39.9

-8,700

Prospect

8,870

- 1.05

3,680

41.5

-190

Wingecarribee

24,100

- 2.14

15,230

63.2

-1,380

Fitzroy Falls

10,000

- 0.32

8,430

84.3

-260

Tallowa*

35,300*

- 3.18

12,320*

34.9*

-200

Blue Mountains

2,790

 

2,030

72.8

-90

Total

2,385,300

 

960,480

40.3

-14,000


*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.