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

95.4
Saturday 24 July
0.6
2,462,667 ML
2,581,850 ML
9,217 ML
1,317 ML
14,647 ML
Saturday 24 July
97.0
Warragamba Dam
Warragamba
Saturday 24 July
1,966,095
2,027,000
1,649,503
1,970,564
1,947,649
316,592
-4,469
18,446
81.4
97.2
96.1
15.6
-0.2
0.9
82.3
Woronora Dam
Woronora
Saturday 24 July
59,088
71,790
44,628
60,438
59,448
14,460
-1,350
-360
62.2
84.2
82.8
20.1
-1.9
-0.5
94.6
Avon Dam
Upper Nepean
Saturday 24 July
138,824
146,700
122,211
141,412
139,442
16,613
-2,588
-618
83.3
96.4
95.1
11.3
-1.8
-0.4
80.1
Cataract Dam
Upper Nepean
Saturday 24 July
77,897
97,190
69,762
79,739
78,190
8,135
-1,842
-293
71.8
82.0
80.5
8.4
-1.9
-0.3
97.7
Cordeaux Dam
Upper Nepean
Saturday 24 July
91,469
93,640
67,787
92,860
91,931
23,682
-1,391
-462
72.4
99.2
98.2
25.3
-1.5
-0.5
90.7
Nepean Dam
Upper Nepean
Saturday 24 July
61,427
67,730
43,199
64,603
62,382
18,228
-3,176
-955
63.8
95.4
92.1
26.9
-4.7
-1.4
82.1
Prospect Dam
Saturday 24 July
27,354
33,330
30,920
32,360
28,417
-3,566
-5,006
-1,063
92.8
97.1
85.3
-10.7
-15.0
-3.2
85.9
Wingecarribee Reservoir
Shoalhaven
Saturday 24 July
20,725
24,130
20,051
21,021
20,767
674
-296
-42
83.1
87.1
86.1
2.8
-1.2
-0.2
99.5
Fitzroy Falls Reservoir
Shoalhaven
Saturday 24 July
9,902
9,950
6,719
9,854
9,902
3,183
48
0
67.5
99.0
99.5
32.0
0.5
0.0
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.
Saturday 24 July
7,500
7,500
7,010
7,500
7,500
490
0
0
93.5
100.0
100.0
6.5
0.0
0.0
82.6
Blue Mountains Dams
Blue Mountains
Saturday 24 July
2,386
2,890
2,285
2,461
2,392
101
-75
-6
79.1
85.2
82.8
3.5
-2.6
-0.2
Warragamba Catchment
4.3
14.2
1,144
Nepean Catchment
3.7
5.5
1,453
Woronora Catchment
2.5
3.0
1,275
Shoalhaven Catchment
2.1
4.6
1,464
Blue Mountains Catchments
2.0
12.2
1,845
Avon Dam
1
55
8,953
Nepean Dam
21
206
12,819
Cataract Dam
12
119
16,934
Cordeaux Dam
1
24
8,082
Woronora Dam
1
8
8,051
Broughtons Pass Weir
14
157
16,939
Pheasants Nest Weir
24
332
37,316
Tallowa Dam
569
4,733
561,580