Water storage and supply report - 23 December 2010
During the week the following rainfall (approximately) was recorded in the catchments:
|
Catchment |
Rainfall |
|---|---|
|
Warragamba |
15 mm |
|
Upper Nepean |
14 mm |
|
Woronora |
10 mm |
|
Shoalhaven |
20 mm |
|
Blue Mountains |
17 mm |
Water supply
At 3 pm Thursday, 23 December 2010, the inflow rate to Warragamba Dam was 2 200 megalitres per day and to Tallowa Dam was 1 300 megalitres per day.
The available storage at 3 pm Thursday, 16 December 2010 was 72.0 %. The next weekly report on water storage and supply will be published on Thursday 13 January 2011.
|
Date |
Maximum |
Sydney rainfall |
Bulk water supply |
Available storage at 3 pm |
% storage at 3 pm |
|---|---|---|---|---|---|
|
Fri 17.12.10 |
26°C |
8.0 mm |
1 413 ML |
1 860 000 ML |
72.0% |
|
Sat 18.12.10 |
26°C |
Nil |
1 164 ML |
1 861 000 ML |
72.1% |
|
Sun 19.12.10 |
26°C |
Nil |
1 217 ML |
1 861 500 ML |
72.1% |
|
Mon 20.12.10 |
27°C |
5.0 mm |
1 176 ML |
1 862 500 ML |
72.1% |
|
Tue 21.12.10 |
22°C |
Nil |
1 237 ML |
1 863 500 ML |
72.2% |
|
Wed 22.12.10 |
28°C |
Nil |
1 259 ML |
1 864 000 ML |
72.2% |
|
Thu 23.12.10 |
26°C |
Nil |
1 344 ML |
1 863 500 ML |
72.2% |
Note: Maximum Sydney temperature and rainfall figures refer to the 24 hours to 8 am.
Water supply summary
| Total supply for the week |
8 810 ML |
|
Average daily supply during week |
1 259 |
|
Net weekly storage change (ML) |
+ 5 770 ML |
|
Net weekly storage change (%) |
+ 0.2% |
Available water storage at 23 December 2010
|
Storage |
Full operating storage* (ML) |
Storage level (m) |
Available storage (ML) |
Available storage (%) |
Net weekly change (ML) |
|---|---|---|---|---|---|
|
Cataract |
97 190 |
- 3.44 |
70 950 |
73.0 |
- 280 |
|
Cordeaux |
93 640 |
- 4.89 |
60 890 |
65.0 |
110 |
|
Avon |
146 700 |
- 6.16 |
87 880 |
59.9 |
- 260 |
|
Nepean |
67 730 |
- 3.20 |
58 090 |
85.8 |
- 750 |
|
Woronora |
71 790 |
- 17.82 |
25 090 |
34.9 |
- 290 |
|
Warragamba |
2 027 000 |
- 7.63 |
1 493 320 |
73.7 |
9 600 |
|
Prospect |
33 330 |
- 0.64 |
30 010 |
90.0 |
- 1 250 |
|
Wingecarribee |
24 130 |
- 1.47 |
17 870 |
74.1 |
- 1 060 |
|
Fitzroy Falls |
9 950 |
- 0.11 |
9 420 |
94.7 |
- 30 |
|
Tallowa |
7 500** |
+ 0.08 |
7 500** |
100.0** |
0 |
|
Blue Mountains |
2 890 |
|
2 510 |
86.9 |
- 20 |
|
Total |
2 581 850 |
|
1 863 530 |
72.2 |
5 770 |
* 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
