Weekly water update

Data for week ending 08 December 2016
Last update at 5:00 PM 08 December 2016

Dam storage levels


1310.9 billion litres this week


Less than week ending 01 December 2016

Avg. catchment rainfall

6.5 mm

This week


More than week ending 01 December 2016

Flow into dams

6,078 ML

This week


Less than week ending 01 December 2016

Water use

173 L

Daily avg. per person this week


More than week ending 01 December 2016

Start of summer sees storage levels dip

Melbourne's water storages decreased by 0.3% of capacity this week, representing a net loss of 5.5 billion litres.

The four major catchments received between 0.4 to 15.6 mm of rain, the average being 6.5 mm. This was 68.3% below the long-term average for the period of 20.5 mm.

The 6.1 billion litres of stream flow was 21.9% below the 30-year average for the period (7.8 billion litres).

Water storages are now 72.3% (1,309.9 billion litres) full, compared with 70.8% (1,283.4 billion litres) at the same time last year - a difference of 26.5 billion litres.

Melburnians used an average of 173 litres of water per person per day. This is 23 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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72.3% full at 08 December 2016

1,310,928 ML
Reservoir Total capacity (ML) Current volume (ML) % Full Rainfall recorded (mm)
Thomson 1,068,000 741,557
-1,101 since last week
69.4% 0.4 (verified)
View hourly unverified
Cardinia 286,911 186,163
+1,076 since last week
64.9% N/A
View hourly unverified
Upper Yarra 200,579 141,729
-1,152 since last week
70.7% 15.6 (verified)
View hourly unverified
Sugarloaf 96,253 93,470
-1,305 since last week
97.1% N/A
View hourly unverified
Silvan 40,445 32,315
-1,676 since last week
79.9% N/A
View hourly unverified
Tarago 37,580 37,484
-143 since last week
99.7% N/A
View hourly unverified
Yan Yean 30,266 28,046
0 since last week
92.7% N/A
View hourly unverified
Greenvale 26,839 25,430
-125 since last week
94.8% N/A
View hourly unverified
Maroondah 22,179 22,059
+10 since last week
99.5% 5.8 (verified)
View hourly unverified
O'Shannassy 3,123 2,675
-118 since last week
85.7% 6.2 (verified)
View hourly unverified
Total 1,812,175 1,310,928
-4,534 since last week
72.3% 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 0.4 23.0 -98.3% 3.6mm
Upper Yarra 15.6 17.0 -7.1% 3.6mm
O'Shannassy 6.2 22.0 -71.8% 4.2mm
Maroondah 5.8 18.0 -68.0% 2.8mm

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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 2,318 3,170 -26.9% 1,150
Upper Yarra 1,446 1,750 -17.4% 65
O'Shannassy 1,191 1,580 -24.6% 533
Maroondah 1,123 1,280 -12.3% 645
Total 6,078 7,780 21.9% 2,393

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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 173 150

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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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