Weekly water update

Data for week ending 19 January 2017
Last update at 5:00 PM 19 January 2017

Dam storage levels


1271.7 billion litres this week


Less than week ending 12 January 2017

Avg. catchment rainfall

8.7 mm

This week


More than week ending 12 January 2017

Flow into dams

3,551 ML

This week


More than week ending 12 January 2017

Water use

189 L

Daily avg. per person this week


Less than week ending 12 January 2017

Summer sunshine sees storages dip

Melbourne's water storages decreased by 0.4% of capacity this week, representing a net loss of 8.6 billion litres.

The four major catchments received between 4.4 and 22 mm of rain, the average being 8.7 mm. This was 7.4% above the long-term average for the period of 8.1 mm.

The 3.6 billion litres of stream flow was 15.5% below the 30-year average for the period (4.2 billion litres).

Water storages are now 70.2% (1,271.7 billion litres) full. This is compared with 67.3% (1,218.7 billion litres) at the same time last year. This represents a difference of 53 billion litres.

Melburnians used an average of 189 litres of water per person per day. This is 26 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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70.2% full at 19 January 2017

1,271,686 ML
Reservoir Total capacity (ML) Current volume (ML) % Full Rainfall recorded (mm)
Thomson 1,068,000 738,055
-998 since last week
69.1% 4.4 (verified)
View hourly unverified
Cardinia 286,911 178,475
-1,150 since last week
62.2% N/A
View hourly unverified
Upper Yarra 200,579 118,852
-4,400 since last week
59.3% 10.6 (verified)
View hourly unverified
Sugarloaf 96,253 89,917
-1,184 since last week
93.4% N/A
View hourly unverified
Silvan 40,445 35,064
-217 since last week
86.7% N/A
View hourly unverified
Tarago 37,580 36,704
-279 since last week
97.7% N/A
View hourly unverified
Yan Yean 30,266 27,162
-198 since last week
89.7% N/A
View hourly unverified
Greenvale 26,839 25,485
+91 since last week
95.0% N/A
View hourly unverified
Maroondah 22,179 19,424
-643 since last week
87.6% 7.4 (verified)
View hourly unverified
O'Shannassy 3,123 2,548
+367 since last week
81.6% 22 (verified)
View hourly unverified
Total 1,812,175 1,271,686
-8,611 since last week
70.2% 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 4.4 7.0 -39.7% 17.2mm
Upper Yarra 10.6 9.0 17.8% 14.8mm
O'Shannassy 22.0 9.0 144.4% 10.4mm
Maroondah 7.4 8.0 -5.1% 13.4mm

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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 742 1,400 -47.0% 898
Upper Yarra 1,100 880 25.0% 35
O'Shannassy 894 1,020 -12.4% 365
Maroondah 815 900 -9.4% 373
Total 3,551 4,200 15.5% 1,671

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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 189 215

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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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