Bulk water storage and supply report - 6 March 2008

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

Warragamba

10 mm  

Upper Nepean

5 mm

Woronora

20 mm

Shoalhaven

Less than 5 mm

Blue Mountains

15 mm

As at 3 p.m. Thursday, 6 March 2008, the inflow rate to Warragamba Dam including Shoalhaven transfers was 800 megalitres per day and to Tallowa Dam was x 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.

29.2.08

21 °C

33.0 mm 

1 260 ML

1 736 000 ML

66.5 %

Sat.

1.3.08

21 °C

 0.2 mm

1 152 ML

1 737 000 ML

66.6 %

Sun.

2.3.08

22 °C

 5.0 mm

1 366 ML

1 736 500 ML

66.6 %

Mon.

3.3.08

23 °C

 0.2 mm

1 309 ML

1 736 500 ML

66.6 %

Tue.

4.3.08

23 °C

 Nil 

1 303 ML

1 736 500 ML

66.6 %

Wed.

5.3.08

25 °C

Nil

1 305 ML

1 735 500 ML

66.5 %

Thu.

6.3.08

26 °C

 Nil 

1 233 ML

1 734 500 ML

66.5 %

 

Total supply for the week

8 928 ML

Average daily supply during week

 1 275 ML

Volume pumped from Shoalhaven for the week

 2 715 ML

Net weekly storage change (megalitres)

 1 450 ML

Net weekly storage change (percentage)

+ 0.1 %

 

Available Water Storage as at 6 March 2008

Storage

Full Operating Storage (ML)

Storage Level (m)

Available Storage (ML)

Available Storage (%)

Net Weekly Change (ML)

Cataract

94,300

-0.25 

92,190 

97.8 

-500

Cordeaux

93,640

-0.16 

92,400 

98.7 

-150

Avon

146,700

-1.57 

130,530 

89.0 

-500

Nepean

69,810

-0.85 

67,100 

96.1 

-230

Woronora

71,790

-8.63 

44,680 

62.2 

-210

Warragamba

2,027,000

-12.34 

1,212,870 

59.8 

3,890

Prospect#

33,300

-0.80 

29,220 

87.7 

-40

Wingecarribee

24,100

-1.19 

19,010 

78.9 

-280

Fitzroy Falls

10,000

-0.27 

8,650 

86.5 

-470

Tallowa*

35,300*

+0.01 

35,300* 

100* 

0

Blue Mountains

2,790

 

2,470 

88.5 

-60

Total

 

2,608,730

 

 

1,734,420 

 

66.5 

 

1,450 

 


*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.

#NOTE: With the completion and commissioning of the new Prospect Raw Water Pumping Station, an additional 24,400 megalitres of water can now be accessed from Prospect Reservoir. This previously inaccessible water has now been added to the full operating storage for Prospect Reservoir.

 

 Graph of available storage at 6 March 2008