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

Rainfall during the first week in May generated a minor spill event at Warragamba Dam.

The volume of water spilling from Warragamba dam during the May event peaked at 23 GL/day as opposed to the March 2021 rain event, which peaked at 500 GL/day.

Other Sydney supply dams also received inflows in March, with Nepean, Cataract, Cordeaux and Avon dams all spilling


Loading

98.9
Wednesday 12 May
3.4
2,553,775 ML
2,581,850 ML
9,233 ML
1,319 ML
87,879 ML
Wednesday 12 May
99.8
Warragamba Dam
Warragamba
Wednesday 12 May
2,022,441
2,027,000
1,688,314
1,958,716
1,957,241
334,127
63,725
65,200
83.3
96.6
96.6
16.5
3.1
3.2
86.9
Woronora Dam
Woronora
Wednesday 12 May
62,415
71,790
45,611
63,058
61,239
16,804
-643
1,176
63.5
87.8
85.3
23.4
-0.9
1.6
100.0
Avon Dam
Upper Nepean
Wednesday 12 May
146,700
146,700
127,752
146,164
143,193
18,948
536
3,507
87.1
99.6
97.6
12.9
0.4
2.4
95.1
Cataract Dam
Upper Nepean
Wednesday 12 May
92,415
97,190
68,110
91,140
85,848
24,305
1,275
6,567
70.1
93.8
88.3
25.0
1.3
6.8
100.0
Cordeaux Dam
Upper Nepean
Wednesday 12 May
93,640
93,640
70,776
93,640
93,328
22,864
0
312
75.6
100.0
99.7
24.4
0.0
0.3
100.0
Nepean Dam
Upper Nepean
Wednesday 12 May
67,730
67,730
49,964
67,730
65,500
17,766
0
2,230
73.8
100.0
96.7
26.2
0.0
3.3
82.5
Prospect Dam
Wednesday 12 May
27,491
33,330
29,158
22,702
25,743
-1,667
4,789
1,748
87.5
68.1
77.2
-5.0
14.4
5.2
86.4
Wingecarribee Reservoir
Shoalhaven
Wednesday 12 May
20,852
24,130
18,973
18,442
16,634
1,879
2,410
4,218
78.6
76.4
68.9
7.8
10.0
17.5
100.0
Fitzroy Falls Reservoir
Shoalhaven
Wednesday 12 May
9,950
9,950
7,376
8,131
7,187
2,574
1,819
2,763
74.1
81.7
72.2
25.9
18.3
27.8
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.
Wednesday 12 May
7,500
7,500
20,540
7,500
7,500
-13,040
0
0
94.2
100.0
100.0
5.8
0.0
0.0
91.4
Blue Mountains Dams
Blue Mountains
Wednesday 12 May
2,641
2,890
2,540
2,634
2,483
101
7
158
87.9
91.1
85.9
3.5
0.2
5.5
Warragamba Catchment
0.0
86.4
1,149
Nepean Catchment
0.0
163.4
1,515
Woronora Catchment
0.0
70.6
1,326
Shoalhaven Catchment
0.0
135.6
1,465
Blue Mountains Catchments
0.0
100.1
1,887
Avon Dam
49
209
8,410
Nepean Dam
124
334
11,903
Cataract Dam
44
724
15,128
Cordeaux Dam
48
116
7,751
Woronora Dam
75
981
7,407
Broughtons Pass Weir
59
872
15,111
Pheasants Nest Weir
169
789
34,182
Tallowa Dam
0
61,245
491,793