Water storage data

Data for 21 December 2014
Last update at 11:00 AM 21 December 2014

Dam storage levels


1407.8 billion litres today


Same as 20 December 2014

Avg. catchment rainfall

0 mm



Less than 20 December 2014

Flow into dams

386 ML



More than 20 December 2014

Water use

1,243 ML

Melbourne today


More than 20 December 2014

Dam storage levels

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77.7% full at 21 December 2014

1,407,829 ML
Reservoir Total capacity (ML) Current volume (ML) % Full Rainfall recorded (mm)
Thomson 1,068,000 844,417
-957 since yesterday
79.1% 0 (verified)
View hourly unverified
Cardinia 286,911 181,893
-375 since yesterday
63.4% N/A
View hourly unverified
Upper Yarra 200,579 154,237
+206 since yesterday
76.9% 0 (verified)
View hourly unverified
Sugarloaf 96,253 90,679
-84 since yesterday
94.2% N/A
View hourly unverified
Silvan 40,445 36,025
+249 since yesterday
89.1% N/A
View hourly unverified
Tarago 37,580 37,706
-47 since yesterday
100.0% N/A
View hourly unverified
Yan Yean 30,266 27,282
-26 since yesterday
90.1% N/A
View hourly unverified
Greenvale 26,839 17,878
+21 since yesterday
66.6% N/A
View hourly unverified
Maroondah 22,179 15,856
-85 since yesterday
71.5% 0 (verified)
View hourly unverified
O'Shannassy 3,123 1,856
+21 since yesterday
59.4% 0 (verified)
View hourly unverified
Total 1,812,175 1,407,829
-1,077 since yesterday
77.7% 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 December Month to date (mm) December average (mm) Based on mean from previous 30 years
Thomson 0.0 2.9 79.4 90.0
Upper Yarra 0.0 2.8 32.6 87.0
Maroondah 0.0 3.0 35.2 94.0
O'Shannassy 0.0 3.2 43.0 98.0

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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 December Month to date (ML) December average (ML) Based on mean from previous 30 years
Thomson 161 455.4 7,171 14,117
Upper Yarra 15 251.6 836 7,799
Maroondah 111 195.6 2,565 6,063
O'Shannassy 99 219.4 2,459 6,800
Total 386 13,031 34,779

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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 Dec
Businesses & households 1,243 1,060

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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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