Water storage and supply report - 2 December 2010
During the week the following rainfall (approximately) was recorded in the catchments:
|
Catchment |
Rainfall |
|---|---|
|
Warragamba |
100 mm |
|
Upper Nepean |
100 mm |
|
Woronora |
80 mm |
|
Shoalhaven |
120 mm |
|
Blue Mountains |
140 mm |
Water supply
At 3 pm Thursday, 2 December 2010, the inflow rate to Warragamba Dam was 43 000 megalitres per day and to Tallowa Dam was 14 500 megalitres per day.
The available storage at 3 pm Thursday, 25 November 2010 was 59.3 %.
|
Date |
Maximum |
Sydney rainfall |
Bulk water supply |
Available storage at 3 pm |
% storage at 3 pm |
|---|---|---|---|---|---|
|
Fri 26.11.10 |
26°C |
Nil |
1 351 ML |
1 531 000 ML |
59.3% |
|
Sat 27.11.10 |
24°C |
Nil |
1 276 ML |
1 530 000 ML |
59.3% |
|
Sun 28.11.10 |
26°C |
Nil |
1 451 ML |
1 529 000 ML |
59.2% |
|
Mon 29.11.10 |
23°C |
6.0 mm |
1 139 ML |
1 530 500 ML |
59.3% |
|
Tue 30.11.10 |
22°C |
6.0 mm |
1 107 ML |
1 533 000 ML |
59.4% |
|
Wed 1.12.10 |
21°C |
28.0 mm |
1 024 ML |
1 541 000 ML |
59.7% |
|
Thu 2.12.10 |
20°C |
21.0 mm |
998 ML |
1 591 500 ML |
61.6% |
Note: Maximum Sydney temperature and rainfall figures refer to the 24 hours to 8 am.
Water supply summary
| Total supply for the week |
8 354 ML |
|
Average daily supply during week |
1 192 ML |
|
Net weekly storage change (ML) |
+ 59 789 ML |
|
Net weekly storage change (%) |
+ 2.3 % |
Available water storage at 2 December 2010
|
Storage |
Full operating storage* (ML) |
Storage level (m) |
Available storage (ML) |
Available storage (%) |
Net weekly change (ML) |
|---|---|---|---|---|---|
|
Cataract |
97 190 |
- 3.39 |
71 297 |
73.4 |
4 617 |
|
Cordeaux |
93 640 |
- 5.22 |
59 040 |
63.0 |
2 720 |
|
Avon |
146 700 |
- 6.49 |
85 052 |
58.0 |
3 902 |
|
Nepean |
67 730 |
- 4.94 |
53 277 |
78.7 |
4 017 |
|
Woronora |
71 790 |
- 17.61 |
25 454 |
35.5 |
224 |
|
Warragamba |
2 027 000 |
- 12.08 |
1 227 282 |
60.5 |
41 412 |
|
Prospect |
33 330 |
- 0.35 |
31 482 |
94.5 |
562 |
|
Wingecarribee |
24 130 |
- 1.14 |
19 221 |
79.7 |
1 851 |
|
Fitzroy Falls |
9 950 |
- 0.07 |
9 604 |
96.5 |
254 |
|
Tallowa |
7 500** |
+ 0.43 |
7 500** |
100.0** |
0 |
|
Blue Mountains |
2 890 |
|
2 480 |
85.8 |
230 |
|
Total |
2 581 850 |
|
1 591 689 |
61.6 |
59 789 |
* Due to recent surveys of some of the lakes formed by our dams and changed operational rules for Tallowa Dam, the total system’s operating storage capacity has been revised from 2,608,730 to 2,581,850 megalitres.
** 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 7,500 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
