Weekly water update

Data for week ending 28 April 2016
Last update at 5:00 PM 28 April 2016

Dam storage levels


1087.5 billion litres this week


Less than week ending 21 April 2016

Avg. catchment rainfall

15.9 mm

This week


More than week ending 21 April 2016

Flow into dams

1,834 ML

This week


More than week ending 21 April 2016

Water use

159 L

Daily avg. per person this week


Less than week ending 21 April 2016

Storages drop to 60% as warm, dry weather continues

Melbourne’s water storages have experienced another autumn week with little rainfall, with reservoir levels decreasing by 0.6%.

The four major catchments received between 15.0 to 22.4 mm of rain, the average being 15.9 mm.

This was 35.9% below the long-term average for the period of 24.8 mm.

The 1.8 billion litres of stream flow was 64.6% below the 30-year average for the period (5.2 billion litres).

Environmental water was released from the Thomson Reservoir down the Thomson River to support migration and spawning of Australian grayling.

Water storages are now 60.0% (1,087.5 billion litres) full, compared with 69.7% (1,263.0 billion litres) at the same time last year - a difference of 175.5 billion litres.

Melbournians used an average of 159 litres of water per person per day, 18 litres less than the previous week.

Permanent water use rules are currently in place and Target 155 has been launched to encourage Melburnians to reduce water consumption.

Information on Target 155 is available on the Department of Environment, Land, Water and Planning’s website or by contacting your local water retailer.

Dam storage levels

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60.0% full at 28 April 2016

1,087,527 ML
Reservoir Total capacity (ML) Current volume (ML) % Full Rainfall recorded (mm)
Thomson 1,068,000 628,108
-8,854 since last week
58.8% 15.2 (verified)
View hourly unverified
Cardinia 286,911 171,557
+406 since last week
59.8% N/A
View hourly unverified
Upper Yarra 200,579 102,731
-369 since last week
51.2% 15 (verified)
View hourly unverified
Sugarloaf 96,253 58,660
-1,451 since last week
60.9% N/A
View hourly unverified
Silvan 40,445 35,467
+248 since last week
87.7% N/A
View hourly unverified
Tarago 37,580 32,696
+162 since last week
87.0% N/A
View hourly unverified
Yan Yean 30,266 23,813
-25 since last week
78.7% N/A
View hourly unverified
Greenvale 26,839 24,434
+16 since last week
91.0% N/A
View hourly unverified
Maroondah 22,179 8,065
+340 since last week
36.4% 22.4 (verified)
View hourly unverified
O'Shannassy 3,123 1,996
-265 since last week
63.9% 16 (verified)
View hourly unverified
Total 1,812,175 1,087,527
-9,792 since last week
60.0% N/A

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Dam storage levels includes all of Melbourne's water storage areas that receive water from catchments and the desalination plant.


Monthly average storage levels of Melbourne's reservoirs over the years. Data is updated at the end of each month. View our interactive storage graph, displaying data from 1940 - present.

Rainfall at dams

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Catchment This week (mm) This week's long term average (ML) based on mean from previous 30 years Variation
(to the average)
Same time last year
Thomson 15.2 28.8 -47.2% 7.8mm
Upper Yarra 15.0 19.8 -24.2% 11.8mm
O'Shannassy 16.0 23.3 -31.3% 17.8mm
Maroondah 22.4 23.5 -4.7% 8.8mm

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Rainfall data is a weighted average catchment figure that is validated and provided for four major catchments only.

Flow into dams

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Catchment This week (ML) This week's long term average (ML) based on mean from previous 30 years Variation
(to the average)
Same time last year (ML)
Thomson 1,114 2,380 -53.2% 1,071
Upper Yarra 54 1,000 -94.6% 177
O'Shannassy 237 870 -72.8% 423
Maroondah 429 930 -53.9% 620
Total 1,834 5,180 64.6% 2,291

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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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Daily water use This week's daily average (L) Last week's daily average (L)
Per Person Water Use 159 177

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

All figures include non-metropolitan supply for Western Water (supplied since March 2000), which are not included in annual Melbourne metropolitan consumption figures.

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