Water storage and supply reports - 11 August 2011
During the week the following rainfall (approximately) was recorded in the catchments:
|
Catchment |
Rainfall |
|---|---|
|
Warragamba |
6 mm |
|
Upper Nepean |
6 mm |
|
Woronora |
18 mm |
|
Shoalhaven |
Less than 5 mm |
|
Blue Mountains |
17 mm |
Water supply
At 3 pm Thursday, 11 August 2011, the inflow rate to Warragamba Dam was 1 200 megalitres per day and to Tallowa Dam was 600 megalitres per day.
Total available storage as at 3pm Thursday, 11 August 2011 is 78.1%, a decrease of 0.2% since last Thursday.
|
Date |
Maximum |
Sydney rainfall |
Bulk water supply |
Available storage at 3 pm |
% storage at 3 pm |
|---|---|---|---|---|---|
|
Fri 5.8.11 |
24°C |
Nil |
1 050 ML |
2 020 000 ML |
78.2% |
|
Sat 6.8.11 |
25°C |
Nil |
1 089 ML |
2 019 000 ML |
78.2% |
|
Sun 7.8.11 |
24°C |
0.6 mm |
1 189 ML |
2 018 500 ML |
78.2% |
|
Mon 8.8.11 |
20°C |
4.4 mm |
972 ML |
2 018 000 ML |
78.2% |
|
Tue 9.8.11 |
18°C |
Nil |
1 007 ML |
2 018 500 ML |
78.2% |
|
Wed 10.8.11 |
16°C |
Nil |
989 ML |
2 018 000 ML |
78.2% |
|
Thu 11.8.11 |
18°C |
Nil |
925 ML |
2 017 500 ML |
78.1% |
Note: Maximum Sydney temperature and rainfall figures refer to the 24 hours to 8 am.
Water supply summary
| Total supply for the week |
7 220 ML |
|
Average daily supply during week |
1 031 ML |
|
Net weekly storage change (ML) |
- 3 330 ML |
|
Net weekly storage change (%) |
- 0.2% |
Available water storage at 11 August 2011
|
Storage |
Full operating storage (ML) |
Storage level (m) |
Available storage (ML) |
Available storage (%) |
Net weekly change (ML) |
|---|---|---|---|---|---|
|
Cataract |
97 190 |
- 1.78 |
83 030 |
85.4 |
- 830 |
|
Cordeaux |
93 640 |
- 1.65 |
81 390 |
86.9 |
0 |
|
Avon |
146 700 |
- 4.70 |
100 720 |
68.7 |
- 270 |
|
Nepean |
67 730 |
- 3.35 |
57 670 |
85.1 |
- 710 |
|
Woronora |
71 790 |
- 10.35 |
40 380 |
56.2* |
- 120 |
|
Warragamba |
2 027 000 |
- 6.17 |
1 588 940 |
78.4 |
670 |
|
Prospect |
33 330 |
- 0.38 |
31 330 |
94.0 |
0 |
|
Wingecarribee |
24 130 |
- 1.62 |
17 270 |
71.6 |
- 620 |
|
Fitzroy Falls |
9 950 |
- 0.68 |
6 720 |
67.5 |
- 1 440 |
|
Tallowa |
7 500** |
+ 0.05 |
7 500** |
100.0** |
0 |
|
Blue Mountains |
2 890 |
|
2 370 |
82.0 |
- 10 |
|
Total |
2 581 850 |
|
2 017 320 |
78.1 |
- 3 330 |
* As with all dams, the storage level in Woronora Dam is affected by a number of factors including rainfall, catchment size, dam capacity, demand and the amount of water released for the environment. View more information about Woronora Dam levels.
** 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
