Greater Sydney Catchment

1

How much rain have we had?


Warragamba (24hrs to 9am)
mm for past week
2

How much water is in our dams?


Total Storage  
Weekly Change %
3

How much water have we used?


Daily Supply  
for past week

Catchment rainfall Water Storage Water Supply 1 0.0 2 0.0 3 0

Additional information

As at 31 August 2021, the total available water held in Greater Sydney storages was 96.4%, an increase of 0.6 % from the previous month.

Approximately 220 GL of water flowed into our dams this August compared to 1236 GL for the same time last year.

Due to high autumn rainfall, our total inflow this calendar year (August 31) has reached 3,776 GL, which is already 152% of the annual long-term average.

View dam levels and information on other Greater Sydney supply dams.


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94.0
Monday 18 October
0.1
2,426,169 ML
2,581,850 ML
9,030 ML
1,290 ML
3,065 ML
Monday 18 October
96.6
Warragamba Dam
Warragamba
Monday 18 October
1,957,979
2,027,000
1,951,338
1,952,076
1,955,027
6,641
5,903
2,952
96.3
96.3
96.4
0.3
0.3
0.1
77.1
Woronora Dam
Woronora
Monday 18 October
55,363
71,790
54,607
56,951
55,636
756
-1,588
-273
76.1
79.3
77.5
1.1
-2.2
-0.4
90.7
Avon Dam
Upper Nepean
Monday 18 October
133,034
146,700
125,961
135,152
133,336
7,073
-2,118
-302
85.9
92.1
90.9
4.8
-1.4
-0.2
69.2
Cataract Dam
Upper Nepean
Monday 18 October
67,224
97,190
82,127
68,315
67,156
-14,903
-1,091
68
84.5
70.3
69.1
-15.3
-1.1
0.1
91.9
Cordeaux Dam
Upper Nepean
Monday 18 October
86,060
93,640
79,439
85,767
85,914
6,621
293
146
84.8
91.6
91.7
7.1
0.3
0.2
87.4
Nepean Dam
Upper Nepean
Monday 18 October
59,181
67,730
62,955
61,576
59,382
-3,774
-2,395
-201
92.9
90.9
87.7
-5.6
-3.5
-0.3
92.6
Prospect Dam
Monday 18 October
30,869
33,330
28,811
31,380
29,808
2,058
-511
1,061
86.4
94.1
89.4
6.2
-1.5
3.2
82.6
Wingecarribee Reservoir
Shoalhaven
Monday 18 October
19,925
24,130
19,593
20,176
19,842
332
-251
83
81.2
83.6
82.2
1.4
-1.0
0.3
68.0
Fitzroy Falls Reservoir
Shoalhaven
Monday 18 October
6,765
9,950
7,187
6,999
7,281
-422
-234
-516
72.2
70.3
73.2
-4.2
-2.4
-5.2
100.0
Tallowa Dam
Shoalhaven
The ‘capacity’ for Tallowa Dam only refers to the water available to be transferred to Sydney, when the total system storage is below 75%. The dam can hold 90,000 ML but 7,500 ML is available for transfers.
Monday 18 October
7,500
7,500
7,430
7,500
7,500
70
0
0
99.1
100.0
100.0
0.9
0.0
0.0
78.5
Blue Mountains Dams
Blue Mountains
Monday 18 October
2,269
2,890
2,486
2,206
2,222
-217
63
47
86.0
76.3
76.9
-7.5
2.2
1.6
Warragamba Catchment
0.0
36.4
1,065
Nepean Catchment
0.0
39.9
1,281
Woronora Catchment
0.0
31.2
1,108
Shoalhaven Catchment
0.0
38.2
1,234
Blue Mountains Catchments
0.0
43.2
1,719
Avon Dam
3
23
5,808
Nepean Dam
23
183
10,109
Cataract Dam
13
154
11,190
Cordeaux Dam
3
41
4,251
Woronora Dam
1
10
4,812
Broughtons Pass Weir
17
175
11,184
Pheasants Nest Weir
32
247
25,875
Tallowa Dam
1,388
5,031
472,079