Bulk water storage and supply report - 11 October 2007

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

Warragamba –

Less than 5mm

Upper Nepean –

Negligible

Woronora –

Less than 5mm

Shoalhaven –

Negligible

Blue Mountains –

Negligible.

As at 3 p.m. Thursday, 11 October 2007, the inflow rate to Warragamba Dam including Shoalhaven transfers was 500 megalitres per day and to Tallowa Dam was 170 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.

5.10.07

23°C

Nil

1 378 ML

1 512 000 ML

58.5%

Sat.

6.10.07

24°C

Nil

1 389 ML

1 510 000 ML

58.4%

Sun.

7.10.07

32°C

Nil

1 402 ML

1 508 000 ML

58.4%

Mon.

8.10.07

21°C

Nil

1 560 ML

1 506 000 ML

58.3%

Tue.

9.10.07

21°C

Nil

1 352 ML

1 505 000 ML

58.2%

Wed.

10.10.07

21°C

Nil

1 226 ML

1 503 500 ML

58.2%

Thu.

11.10.07

22°C

Nil

1 342 ML

1 502 500 ML

58.1%

 

Total supply for the week

      9 648 ML

Average daily supply during week

      1 378 ML

Volume pumped from Shoalhaven for the week

      4 942 ML

Net weekly storage change (megalitres)

   - 10 380 ML

Net weekly storage change (percentage)

- 0.4 %

 

Available Water Storage as at 11 October 2007

Storage

Full Operating Storage (ML)

Storage Level (m)

Available Storage (ML)

Available Storage (%)

Net Weekly Change (ML)

Cataract

94,300

- 1.60

81,310

86.2

-1,470

Cordeaux

93,640

- 3.69

67,970

72.6

-60

Avon

146,700

- 3.92

107,880

73.5

-660

Nepean

69,810

- 4.00

57,680

82.6

290

Woronora

71,790

- 10.56

39,870

55.5

-220

Warragamba

2,027,000

- 14.71

1,086,370

53.6

-3,630

Prospect

8,870

- 0.33

7,190

81.1

-50

Wingecarribee

24,100

- 1.47

17,870

74.1

200

Fitzroy Falls

10,000

- 0.40

7,990

79.9

-690

Tallowa*

35,300*

- 1.23

26,090*

73.9*

-4,010

Blue Mountains

2,790

 

2,260

81.0

-80

Total

2,584,300

 

1,502,480

58.1

-10,380


*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.