Weekly water update

Data for week ending 20 October 2016
Last update at 7:00 AM 24 October 2016

Dam storage levels


1277.9 billion litres this week


More than week ending 13 October 2016

Avg. catchment rainfall

37.8 mm

This week


More than week ending 13 October 2016

Flow into dams

17,602 ML

This week


Less than week ending 13 October 2016

Water use

139 L

Daily avg. per person this week


More than week ending 13 October 2016

More rain sees slight storage gain

Melbourne’s storage levels increased by 0.5% of capacity this week, representing a net gain of 10.1 billion litres over the week.

The four major catchments received between 26.4 and 65.0 mm of rain, the average being 37.8 mm. This was 47.1% above the long-term average for the period of 25.7 mm.

The 17.6 billion litres of stream flow was 22.1% above the 30-year average for the period (14.4 billion litres).

Water storages are now 70.5% (1,277.9 billion litres) full.

This is compared with 73.8% (1,338.0 billion litres) at the same time last year, and represents a difference of 60.1 billion litres.

Melburnians used an average of 139 litres of water per person per day, 8 litres more 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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70.5% full at 20 October 2016

1,277,858 ML
Reservoir Total capacity (ML) Current volume (ML) % Full Rainfall recorded (mm)
Thomson 1,068,000 712,202
+6,467 since last week
66.7% 26.4 (verified)
View hourly unverified
Cardinia 286,911 180,007
+242 since last week
62.7% N/A
View hourly unverified
Upper Yarra 200,579 139,554
+3,528 since last week
69.6% 47.2 (verified)
View hourly unverified
Sugarloaf 96,253 94,253
+696 since last week
97.9% N/A
View hourly unverified
Silvan 40,445 35,467
-1,002 since last week
87.7% N/A
View hourly unverified
Tarago 37,580 37,781
+36 since last week
100.0% N/A
View hourly unverified
Yan Yean 30,266 27,422
+182 since last week
90.6% N/A
View hourly unverified
Greenvale 26,839 25,724
+154 since last week
95.9% N/A
View hourly unverified
Maroondah 22,179 22,259
-201 since last week
100.0% 29.2 (verified)
View hourly unverified
O'Shannassy 3,123 3,189
-14 since last week
100.0% 65 (verified)
View hourly unverified
Total 1,812,175 1,277,858
+10,088 since last week
70.5% 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 26.4 26.1 1.1% 26.2mm
Upper Yarra 47.2 24.4 93.4% 22.6mm
O'Shannassy 65.0 31.3 107.7% 15.0mm
Maroondah 29.2 22.1 32.1% 25.0mm

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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 6,894 6,180 11.6% 3,740
Upper Yarra 5,020 3,700 35.7% 2,065
O'Shannassy 3,839 2,600 47.7% 1,471
Maroondah 1,849 1,940 -4.7% 1,612
Total 17,602 14,420 22.1% 8,888

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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 139 131

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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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