Water storage and supply report - 11 June 2009
Rainfall
During the week the following rainfall (approximately) was recorded in the catchments:
|
Catchment |
Rainfall |
|---|---|
|
Warragamba |
6 mm |
|
Upper Nepean |
Negligible |
|
Woronora |
Negligible |
|
Shoalhaven |
Less than 5 mm |
|
Blue Mountains |
8 mm |
Water supply
At 3 pm Thursday, 11 June 2009, the inflow rate to Warragamba Dam was 2200 megalitres per day and to Tallowa Dam was 400 megalitres per day.
The available storage at 3 pm Thursday, 4 June 2009 was 61.1%.
|
Date |
Maximum |
Sydney rainfall* |
Bulk water supply |
Available storage at 3 pm |
% storage at 3 pm |
|---|---|---|---|---|---|
|
Fri 5.6.09 |
17°C |
0.6 mm |
1 168 ML |
1 596 000 ML |
61.2% |
|
Sat 6.6.09 |
19°C |
Nil |
1 287 ML |
1 597 000 ML |
61.2% |
|
Sun 7.6.09 |
19°C |
0.2 mm |
1 290 ML |
1 598 000 ML |
61.3% |
|
Mon 8.6.09 |
20°C |
Nil |
1 151 ML |
1 599 500 ML |
61.3% |
|
Tue 9.6.09 |
19°C |
Nil |
1 209 ML |
1 600 500 ML |
61.4% |
|
Wed 10.6.09 |
16°C |
Nil |
1 249 ML |
1 601 000 ML |
61.4% |
|
Thu 11.6.09 |
14°C |
Nil |
1 301 ML |
1 601 000 ML |
61.4% |
*Figures refer to the 24 hours to 8 am.
Water supply summary
| Total supply for the week |
8 654 ML |
|
Average daily supply during week |
1 236 ML |
|
Net weekly storage change (ML) |
+ 6 640 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 11 June 2009
|
Storage |
Full operating storage (ML) |
Storage level (m) |
Available storage (ML) |
Available storage (%) |
Net weekly change (ML) |
|---|---|---|---|---|---|
|
Cataract |
94 300 |
- 1.12 |
85 070 |
90.2 |
- 320 |
|
Cordeaux |
93 640 |
- 4.90 |
60 830 |
65.0 |
- 60 |
|
Avon |
146 700 |
- 4.05 |
106 670 |
72.7 |
- 470 |
|
Nepean |
69 810 |
- 10.75 |
40 350 |
57.8 |
730 |
|
Woronora |
71 790 |
- 11.05 |
38 720 |
53.9 |
50 |
|
Warragamba |
2 027 000 |
- 13.03 |
1 175 100 |
58.0 |
7 000 |
|
Prospect |
33 300 |
- 0.40 |
31 210 |
93.7 |
- 70 |
|
Wingecarribee |
24 100 |
- 1.77 |
16 650 |
69.1 |
- 260 |
|
Fitzroy Falls |
10 000 |
- 0.29 |
8 580 |
85.8 |
-10 |
|
Tallowa |
35 300* |
+ 0.02 |
35 300* |
100.0* |
0 |
|
Blue Mountains |
2 790 |
|
2 430 |
87.1 |
50 |
|
Total |
2 608 730 |
|
1 600 910 |
61.4 |
6 640 |
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 at 11 June
