Bulk water storage and supply report - 8 March 2007

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

  • Warragamba –                 35   mm
  • Upper Nepean –               40 mm
  • Woronora -                       25 mm
  • Shoalhaven –                   15 mm
  • Blue Mountains –              45 mm.

As at 3 p.m. Thursday, 8 March 2007, the inflow rate to Warragamba Dam including Shoalhaven transfers was 2,350 megalitres per day and to Tallowa Dam was 970 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.

2.3.07

27°C

0.2 mm

1 340 ML

  975 000 ML

37.7%

Sat.

3.3.07

28°C

Nil

1 235 ML

  976 000 ML

37.8%

Sun.

4.3.07

31°C

Nil

1 330 ML

  977 000 ML

37.8%

Mon.

5.3.07

32°C

12.0 mm

1 614 ML

  978 000 ML

37.8%

Tue.

6.3.07

24°C

4.0 mm

1 420 ML

  980 000 ML

37.9%

Wed.

7.3.07

24°C

2.0 mm

1 227 ML

  983 500 ML

38.1%

Thu.

8.3.07

24°C

1.0 mm

1 208 ML

  985 000 ML

38.1%

 

Total supply for the week

9 374 ML

Average daily supply during week

1 339 ML

Volume pumped from Shoalhaven for the week

5 839 ML

Net weekly storage change (megalitres)

  + 12 650 ML

Net weekly storage change (percentage)

  + 0.5 %

 

Available Water Storage as at 8 March 2007

Storage

Full Operating Storage (ML)

Storage Level (m)

Available Storage (ML)

Available Storage (%)

Net Weekly Change (ML)

Cataract

94,300

- 11.03

27,380

29.0

450

Cordeaux

93,640

- 10.16

35,810

38.2

660

Avon

146,700

- 8.62

67,490

46.0

1,970

Nepean

69,810

- 3.60

58,820

84.3

370

Woronora

71,790

- 19.32

22,570

31.4

70

Warragamba

2,027,000

- 23.36

700,720

34.6

7,680

Prospect

8,870

- 0.41

6,790

76.6

1,240

Wingecarribee

24,100

- 1.23

18,870

78.3

140

Fitzroy Falls

10,000

- 0.18

9,150

91.5

130

Tallowa*

35,300*

- 0.01

35,230*

99.8*

-70

Blue Mountains

2,790

 

2,120

76.0

10

Total

2,584,300

 

984,950

38.1

12,650


*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.