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

On Friday 31 December 2021 the total available water held in Greater Sydney dams was 94.8%, a decrease of 1.8% from the previous month.

Approximately 700 GL of water flowed into our dams in December 2021 compared to 67 GL for the same time last year.

Total inflows for the 2021 calendar year reached 5,505 GL, which is more than double the annual long-term average.

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


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96.7
Tuesday 18 January
-0.1
2,497,329 ML
2,581,850 ML
9,342 ML
1,335 ML
-3,171 ML
Tuesday 18 January
99.6
Warragamba Dam
Warragamba
Tuesday 18 January
2,017,882
2,027,000
1,951,338
2,009,020
2,027,000
66,544
8,862
-9,118
96.3
99.1
100.0
3.3
0.4
-0.4
78.9
Woronora Dam
Woronora
Tuesday 18 January
56,613
71,790
52,700
54,908
55,060
3,913
1,705
1,553
73.4
76.5
76.7
5.5
2.4
2.2
92.2
Avon Dam
Upper Nepean
Tuesday 18 January
135,253
146,700
119,771
131,732
133,839
15,482
3,521
1,414
81.6
89.8
91.2
10.6
2.4
1.0
64.7
Cataract Dam
Upper Nepean
Tuesday 18 January
62,910
97,190
79,000
57,679
60,798
-16,090
5,231
2,112
81.3
59.3
62.6
-16.6
5.4
2.2
94.4
Cordeaux Dam
Upper Nepean
Tuesday 18 January
88,433
93,640
78,478
86,870
86,281
9,955
1,563
2,152
83.8
92.8
92.1
10.6
1.7
2.3
100.0
Nepean Dam
Upper Nepean
Tuesday 18 January
67,730
67,730
56,153
63,136
67,730
11,577
4,594
0
82.9
93.2
100.0
17.1
6.8
0.0
91.2
Prospect Dam
Tuesday 18 January
30,412
33,330
30,514
29,858
31,175
-102
554
-763
91.6
89.6
93.5
-0.3
1.7
-2.3
86.2
Wingecarribee Reservoir
Shoalhaven
Tuesday 18 January
20,809
24,130
20,218
21,234
20,682
591
-425
127
83.8
88.0
85.7
2.4
-1.8
0.5
72.2
Fitzroy Falls Reservoir
Shoalhaven
Tuesday 18 January
7,187
9,950
8,702
8,893
7,658
-1,515
-1,706
-471
87.5
89.4
77.0
-15.2
-17.1
-4.7
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.
Tuesday 18 January
7,500
7,500
7,150
7,500
7,500
350
0
0
95.3
100.0
100.0
4.7
0.0
0.0
90.0
Blue Mountains Dams
Blue Mountains
Tuesday 18 January
2,600
2,890
2,309
2,572
2,777
291
28
-177
79.9
89.0
96.1
10.1
1.0
-6.1
Warragamba Catchment
0.2
22.8
1,240
Nepean Catchment
0.0
17.3
1,354
Woronora Catchment
0.0
20.9
1,155
Shoalhaven Catchment
0.0
25.1
1,413
Blue Mountains Catchments
1.0
39.0
1,899
Avon Dam
49
645
5,975
Nepean Dam
55
607
12,963
Cataract Dam
34
592
12,036
Cordeaux Dam
18
457
4,561
Woronora Dam
34
326
5,539
Broughtons Pass Weir
50
741
12,026
Pheasants Nest Weir
117
2,137
29,721
Tallowa Dam
1,946
14,152
616,486