Water storage data

Data for 20 August 2014
Last update at 1:00 PM 20 August 2014

Dam storage levels


1436.4 billion litres today


More than 19 August 2014

Avg. catchment rainfall

0 mm



Less than 19 August 2014

Flow into dams

2,380 ML



Less than 19 August 2014

Water use

971 ML

Melbourne today


Less than 19 August 2014

Dam storage levels

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79.3% full at 20 August 2014

1,436,421 ML
Reservoir Total capacity (ML) Current volume (ML) % Full Rainfall recorded (mm)
Thomson 1,068,000 872,273
+1,080 since yesterday
81.7% 0 (verified)
View hourly unverified
Cardinia 286,911 187,853
+171 since yesterday
65.5% N/A
View hourly unverified
Upper Yarra 200,579 138,574
+407 since yesterday
69.1% 0 (verified)
View hourly unverified
Sugarloaf 96,253 93,775
+87 since yesterday
97.4% N/A
View hourly unverified
Silvan 40,445 35,405
-247 since yesterday
87.5% N/A
View hourly unverified
Tarago 37,580 37,897
-11 since yesterday
100.0% N/A
View hourly unverified
Yan Yean 30,266 27,110
0 since yesterday
89.6% N/A
View hourly unverified
Greenvale 26,839 18,102
-7 since yesterday
67.4% N/A
View hourly unverified
Maroondah 22,179 22,259
+20 since yesterday
100.0% 0 (verified)
View hourly unverified
O'Shannassy 3,123 3,173
-3 since yesterday
100.0% 0 (verified)
View hourly unverified
Total 1,812,175 1,436,421
+1,497 since yesterday
79.3% 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 

Monthly average 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 August Month to date (mm) August average (mm) Based on mean from previous 30 years
Thomson 0.0 3.5 76.8 107.0
Upper Yarra 0.0 4.0 58.0 123.0
Maroondah 0.0 3.5 53.4 107.0
O'Shannassy 0.0 5.3 77.4 164.0

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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 August Month to date (ML) August average (ML) Based on mean from previous 30 years
Thomson 1,137 1,104.2 21,997 34,231
Upper Yarra 604 765.3 16,024 23,724
Maroondah 265 354.0 6,629 10,974
O'Shannassy 374 445.8 9,646 13,820
Total 2,380 54,296 82,749

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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 Aug
Businesses & households 971 944

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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.

Help ensure we always have plenty of fresh water to drink and choose the right water for the job.







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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