Water storage data

Data for 1 August 2014
Last update at 1:00 PM 01 August 2014

Dam storage levels


1404.7 billion litres today


More than 31 July 2014

Avg. catchment rainfall

14.2 mm



More than 31 July 2014

Flow into dams

3,365 ML



More than 31 July 2014

Water use

982 ML

Melbourne today


Less than 31 July 2014

Dam storage levels

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77.5% full at 1 August 2014

1,404,705 ML
Reservoir Total capacity (ML) Current volume (ML) % Full Rainfall recorded (mm)
Thomson 1,068,000 852,857
+1,338 since yesterday
79.9% 10.6 (verified)
View hourly unverified
Cardinia 286,911 187,348
-95 since yesterday
65.3% N/A
View hourly unverified
Upper Yarra 200,579 128,507
+737 since yesterday
64.1% 14 (verified)
View hourly unverified
Sugarloaf 96,253 92,688
+261 since yesterday
96.3% N/A
View hourly unverified
Silvan 40,445 36,057
+95 since yesterday
89.2% N/A
View hourly unverified
Tarago 37,580 37,927
0 since yesterday
100.0% N/A
View hourly unverified
Yan Yean 30,266 27,084
+26 since yesterday
89.5% N/A
View hourly unverified
Greenvale 26,839 17,642
-35 since yesterday
65.7% N/A
View hourly unverified
Maroondah 22,179 21,384
+255 since yesterday
96.4% 21 (verified)
View hourly unverified
O'Shannassy 3,123 3,211
+33 since yesterday
100.0% 23.4 (verified)
View hourly unverified
Total 1,812,175 1,404,705
+2,615 since yesterday
77.5% 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 10.6 3.5 10.6 107.0
Upper Yarra 14.0 4.0 14.0 123.0
Maroondah 21.0 3.5 21.0 107.0
O'Shannassy 23.4 5.3 23.4 164.0

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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 1,405 1,104.2 1,405 34,231
Upper Yarra 847 765.3 847 23,724
Maroondah 464 354.0 464 10,974
O'Shannassy 649 445.8 649 13,820
Total 3,365 3,365 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 982 944

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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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