Water storage and supply report - 22 October 2009
During the week the following rainfall (approximately) was recorded in the catchments:
|
Catchment |
Rainfall |
|---|---|
|
Warragamba |
Less than 5 mm |
|
Upper Nepean |
Negligible |
|
Woronora |
Negligible |
|
Shoalhaven |
Less than 5 mm |
|
Blue Mountains |
Negligible |
Water supply
At 3 pm Thursday, 22 October 2009, the inflow rate to Warragamba Dam was 170 megalitres per day and to Tallowa Dam was 120 megalitres per day.
The available storage at 3 pm Thursday, 15 October 2009 was 57.3 %.
|
Date |
Maximum |
Sydney rainfall* |
Bulk water supply |
Available storage at 3 pm |
% storage at 3 pm |
|---|---|---|---|---|---|
|
Fri 16.10.09 |
23°C |
Nil |
1 348 ML |
1 493 000 ML |
57.2% |
|
Sat 17.10.09 |
21°C |
Nil |
1 412 ML |
1 492 000 ML |
57.2% |
|
Sun 18.10.09 |
21°C |
7.0 mm |
1 420 ML |
1 490 000 ML |
57.1% |
|
Mon 19.10.09 |
19°C |
1.0 mm |
1 355 ML |
1 488 500 ML |
57.1% |
|
Tue 20.10.09 |
21°C |
Nil |
1 452 ML |
1 487 000 ML |
57.0% |
|
Wed 21.10.09 |
23°C |
Nil |
1 403 ML |
1 485 500 ML |
56.9% |
|
Thu 22.10.09 |
35°C |
Nil |
1 598 ML |
1 483 500 ML |
56.9% |
*Figures refer to the 24 hours to 8 am.
Water supply summary
| Total supply for the week |
9 987 ML |
|
Average daily supply during week |
1 427 ML |
|
Net weekly storage change (ML) |
- 10 950 ML |
|
Net weekly storage change (%) |
- 0.4 % |
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 22 October 2009
|
Storage |
Full operating storage (ML) |
Storage level (m) |
Available storage (ML) |
Available storage (%) |
Net weekly change (ML) |
|---|---|---|---|---|---|
|
Cataract |
94 300 |
- 4.19 |
62 780 |
66.6 |
- 3 010 |
|
Cordeaux |
93 640 |
- 4.77 |
61 570 |
65.6 |
- 170 |
|
Avon |
146 700 |
- 5.25 |
95 820 |
65.3 |
- 710 |
|
Nepean |
69 810 |
- 9.92 |
42 290 |
60.6 |
-70 |
|
Woronora |
71 790 |
- 12.66 |
35 110 |
48.9 |
- 390 |
|
Warragamba |
2 027 000 |
- 14.40 |
1 102 510 |
54.4 |
- 8 020 |
|
Prospect |
33 300 |
- 2.09 |
23 390 |
70.2 |
2 120 |
|
Wingecarribee |
24 100 |
- 1.88 |
16 260 |
67.5 |
- 40 |
|
Fitzroy Falls |
10 000 |
- 0.46 |
7 680 |
76.8 |
- 250 |
|
Tallowa |
35 300* |
- 0.15 |
34 200* |
96.9* |
- 400 |
|
Blue Mountains |
2 790 |
|
1 850 |
66.3 |
- 10 |
|
Total |
2 608 730 |
|
1 483 460 |
56.9 |
- 10 950 |
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
