Water storage and supply-18 March 2010
During the week the following rainfall (approximately) was recorded in the catchments:
|
Catchment |
Rainfall |
|---|---|
|
Warragamba |
Negligible |
|
Upper Nepean |
Less than 5 mm |
|
Woronora |
9 mm |
|
Shoalhaven |
Less than 5 mm |
|
Blue Mountains |
Less than 5 mm |
Water supply
At 3 pm Thursday, 18 March 2010, the inflow rate to Warragamba Dam was 360 megalitres per day and to Tallowa Dam was 520 megalitres per day.
The available storage at 3 pm Thursday, 11 March 2010 was 59.0 %.
|
Date |
Maximum |
Sydney rainfall* |
Bulk water supply |
Available storage at 3 pm |
% storage at 3 pm |
|---|---|---|---|---|---|
|
Fri 12.3.10 |
24°C |
0.2 mm |
1 270 ML |
1 537 500 ML |
58.9% |
|
Sat 13.3.10 |
25°C |
Nil |
1 369 ML |
1 536 500 ML |
58.9% |
|
Sun 14.3.10 |
25°C |
5.6 mm |
1 387 ML |
1 535 500 ML |
58.9% |
|
Mon 15.3.10 |
25°C |
Nil |
1 233 ML |
1 534 000 ML |
58.8% |
|
Tue 16.3.10 |
25°C |
Nil |
1 342 ML |
1 533 000 ML |
58.8% |
|
Wed 17.3.10 |
25°C |
Nil |
1 316 ML |
1 532 000 ML |
58.7% |
|
Thu 18.3.10 |
26°C |
Nil |
1 333 ML |
1 531 500 ML |
58.7% |
*Figures refer to the 24 hours to 8 am.
Water supply summary
| Total supply for the week |
9 250 ML |
|
Average daily supply during week |
1 321 ML |
|
Net weekly storage change (ML) |
- 7 570 ML |
|
Net weekly storage change (%) |
- 0.3 % |
On 7 November 2008, Minister for Water Phil Costa announced the NSW Government would implement a three year moratorium on the transfer of water from the Shoalhaven River to augment Sydneys drinking water. Water is no longer being pumped from Tallowa Dam.
Available water storage at 18 March 2010
|
Storage |
Full operating storage (ML) |
Storage level (m) |
Available storage (ML) |
Available storage (%) |
Net weekly change (ML) |
|---|---|---|---|---|---|
|
Cataract |
94 300 |
- 6.26 |
50 070 |
53.1 |
- 350 |
|
Cordeaux |
93 640 |
- 6.90 |
50 240 |
53.7 |
- 1 400 |
|
Avon |
146 700 |
- 5.91 |
90 050 |
61.4 |
- 780 |
|
Nepean |
69 810 |
-5.79 |
52 720 |
75.5 |
130 |
|
Woronora |
71 790 |
- 17.38 |
25 860 |
36.0 |
- 340 |
|
Warragamba |
2 027 000 |
- 13.11 |
1 170 580 |
57.7 |
- 4 520 |
|
Prospect |
33 300 |
- 0.81 |
29 180 |
87.6 |
- 150 |
|
Wingecarribee |
24 100 |
- 1.41 |
18 110 |
75.1 |
0 |
|
Fitzroy Falls |
10 000 |
- 0.65 |
6 760 |
67.6 |
- 150 |
|
Tallowa |
35 300* |
+ 0.02 |
35 300* |
100.0* |
0 |
|
Blue Mountains |
2 790 |
|
2 250 |
80.6 |
- 10 |
|
Total |
2 608 730 |
|
1 531 120 |
58.7 |
- 7 570 |
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.
Available water storage
