Water storage data

Data for 20 April 2014
Last update at 12:00 PM 20 April 2014

Dam storage levels


1326.4 billion litres today


Same as 19 April 2014

Avg. catchment rainfall

0.3 mm



Less than 19 April 2014

Flow into dams

417 ML



Less than 19 April 2014

Water use

887 ML

Melbourne today


Less than 19 April 2014

Dam storage levels

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73.2% full at 20 April 2014

1,326,419 ML
Reservoir Total capacity (ML) Current volume (ML) % Full Rainfall recorded (mm)
Thomson 1,068,000 820,337
-471 since yesterday
76.8% 0 (verified)
View hourly unverified
Cardinia 286,911 174,420
+274 since yesterday
60.8% N/A
View hourly unverified
Upper Yarra 200,579 122,108
-356 since yesterday
60.9% 0 (verified)
View hourly unverified
Sugarloaf 96,253 83,324
-12 since yesterday
86.6% N/A
View hourly unverified
Silvan 40,445 35,343
+62 since yesterday
87.4% N/A
View hourly unverified
Tarago 37,580 35,929
+77 since yesterday
95.6% N/A
View hourly unverified
Yan Yean 30,266 26,310
-15 since yesterday
86.9% N/A
View hourly unverified
Greenvale 26,839 17,799
+15 since yesterday
66.3% N/A
View hourly unverified
Maroondah 22,179 8,815
-82 since yesterday
39.7% 3.2 (verified)
View hourly unverified
O'Shannassy 3,123 2,034
-4 since yesterday
65.1% 0 (verified)
View hourly unverified
Total 1,812,175 1,326,419
-512 since yesterday
73.2% N/A

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Dam storage

Dam storage levels includes all of Melbourne's water storage areas that receive water from catchments and the desalination plant. Melbourne’s water storage levels are expressed as a percentage of the combined capacity of all storage reservoirs. This is more accurate than looking at individual reservoirs because of their vast differences in storage capacity.

Volumes are measured over a 24 hour period to 8am each day and are validated at the end of each week.


Storages over the years graph 

Total storage levels of Melbourne's reservoirs over the years.  
View our interactive storage graph, displaying data from 1940 - present.

Rainfall at dams

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Catchment 24 hours to 8am Today (mm) Daily average for April Month to date (mm) April average (mm) Based on mean from previous 30 years
Thomson 0.0 2.7 90.6 81.0
Upper Yarra 0.0 2.4 64.8 73.0
Maroondah 3.2 2.8 80.6 83.0
O'Shannassy 0.0 2.8 73.2 83.0

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Rainfall data is a weighted average figure provided for four major catchments only. This rainfall data has been verified - for more frequent unverified data, visit our rainfall and river level section.

Rainfall provided for the four major catchments only.

Flow into dams

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Catchment 24 hours to 8am today (ML) Daily average for April Month to date (ML) April average (ML) Based on mean from previous 30 years
Thomson 196 232.7 5,963 6,980
Upper Yarra 34 118.3 1,045 3,548
Maroondah 114 120.2 2,174 3,607
O'Shannassy 73 118.6 1,600 3,559
Total 417 10,782 17,694

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Flow into dams is a total of water flowing from our four major catchments into reservoirs.

Water use for Melbourne

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Melbourne's total daily water use 24 hours to 8am today (ML) Daily average (ML)
5 year average for Apr
Businesses & households 887 987

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Water use

Water use shows Melbourne's total usage each day and includes Western Water.  The total amount used by all Melbournians - both business and households.







While all due skill and attention has been taken in collecting, validating and providing data, Melbourne Water Corporation shall not be liable in any way for loss of any kind including damages, costs, interest, loss of profits or special loss or damage, arising from any error, inaccuracy, incompleteness or other defect in this information.
In utilising this information the recipient acknowledges that Melbourne Water Corporation makes no representations as to the accuracy or completeness of this information and the recipient should therefore carry out their own investigations if appropriate.
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