Weekly water update

Data for week ending 25 August 2016
Last update at 5:00 PM 25 August 2016

Dam storage levels


1188.6 billion litres this week


More than week ending 18 August 2016

Avg. catchment rainfall

34.2 mm

This week


More than week ending 18 August 2016

Flow into dams

16,641 ML

This week


More than week ending 18 August 2016

Water use

135 L

Daily avg. per person this week


Less than week ending 18 August 2016

Rainfall leads to storage rise

Melbourne’s water storage levels increased by 0.7% of capacity during the past week, a net gain of 12.4 billion litres.

The four major catchments received an average of 34.2mm of rain which is 43.7% above the long-term average for the period.

In total 16.6 billion litres of water flowed into storages which is 7.7% below the 30 year average for the period.

Water storages are now 65.6% (1,188.6 billion litres) full, compared with 71.9% (a difference of 114 billion litres) at the same time last year.

Melburnians used an average of 135 litres of water per person per day, five 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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65.6% full at 25 August 2016

1,188,632 ML
Reservoir Total capacity (ML) Current volume (ML) % Full Rainfall recorded (mm)
Thomson 1,068,000 658,571
+5,937 since last week
61.7% 16.4 (verified)
View hourly unverified
Cardinia 286,911 183,369
-113 since last week
63.9% N/A
View hourly unverified
Upper Yarra 200,579 113,996
-254 since last week
56.8% 45.4 (verified)
View hourly unverified
Sugarloaf 96,253 87,389
+3,366 since last week
90.8% N/A
View hourly unverified
Silvan 40,445 36,089
+2,158 since last week
89.2% N/A
View hourly unverified
Tarago 37,580 37,019
+204 since last week
98.5% N/A
View hourly unverified
Yan Yean 30,266 25,063
+185 since last week
82.8% N/A
View hourly unverified
Greenvale 26,839 24,041
+37 since last week
89.6% N/A
View hourly unverified
Maroondah 22,179 19,914
+900 since last week
89.8% 31.6 (verified)
View hourly unverified
O'Shannassy 3,123 3,181
+29 since last week
100.0% 77.8 (verified)
View hourly unverified
Total 1,812,175 1,188,632
+12,449 since last week
65.6% 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 16.4 22.0 -25.5% 34.4mm
Upper Yarra 45.4 24.1 88.4% 3.8mm
O'Shannassy 77.8 32.1 142.4% 6.4mm
Maroondah 31.6 21.4 47.7% 13.8mm

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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 6,451 7,430 -13.2% 6,447
Upper Yarra 3,892 5,150 -24.4% 3,769
O'Shannassy 4,000 3,090 29.4% 2,535
Maroondah 2,298 2,360 -2.6% 1,790
Total 16,641 18,030 7.7% 14,541

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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 135 140

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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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