Water storage data

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

Dam storage levels


1454.7 billion litres today


Same as 20 September 2014

Avg. catchment rainfall

0 mm



Less than 20 September 2014

Flow into dams

1,379 ML



Less than 20 September 2014

Water use

994 ML

Melbourne today


More than 20 September 2014

Dam storage levels

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80.3% full at 21 September 2014

1,454,685 ML
Reservoir Total capacity (ML) Current volume (ML) % Full Rainfall recorded (mm)
Thomson 1,068,000 889,483
+432 since yesterday
83.3% 0 (verified)
View hourly unverified
Cardinia 286,911 187,301
-256 since yesterday
65.3% N/A
View hourly unverified
Upper Yarra 200,579 139,032
+122 since yesterday
69.3% 0 (verified)
View hourly unverified
Sugarloaf 96,253 94,209
+43 since yesterday
97.9% N/A
View hourly unverified
Silvan 40,445 35,838
+31 since yesterday
88.6% N/A
View hourly unverified
Tarago 37,580 37,849
-11 since yesterday
100.0% N/A
View hourly unverified
Yan Yean 30,266 27,620
0 since yesterday
91.3% N/A
View hourly unverified
Greenvale 26,839 18,145
-29 since yesterday
67.6% N/A
View hourly unverified
Maroondah 22,179 22,239
0 since yesterday
100.0% 0 (verified)
View hourly unverified
O'Shannassy 3,123 2,969
-46 since yesterday
95.1% 0 (verified)
View hourly unverified
Total 1,812,175 1,454,685
+286 since yesterday
80.3% 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 September Month to date (mm) September average (mm) Based on mean from previous 30 years
Thomson 0.0 3.9 47.2 116.0
Upper Yarra 0.0 4.0 76.6 120.0
Maroondah 0.0 3.8 77.4 114.0
O'Shannassy 0.0 5.3 82.0 158.0

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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 September Month to date (ML) September average (ML) Based on mean from previous 30 years
Thomson 542 1,199.9 12,339 35,996
Upper Yarra 343 815.9 7,291 24,477
Maroondah 250 371.0 4,631 11,130
O'Shannassy 244 479.1 5,964 14,373
Total 1,379 30,225 85,976

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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 Sep
Businesses & households 994 955

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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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