Weekly water update

Data for week ending 17 April 2014
Last update at 4:00 PM 17 April 2014

Dam storage levels


1328.4 billion litres this week


Less than week ending 10 April 2014

Avg. catchment rainfall

35.9 mm

This week


More than week ending 10 April 2014

Flow into dams

5,882 ML

This week


More than week ending 10 April 2014

Water use

154 L

Daily avg. per person this week


Less than week ending 10 April 2014

Storages go close to breaking even

Water storages have ended the week almost where they started, declining by the barest of margins.
Storages declined by 0.1%, a net decrease of 1.2 billion litres, over the week.

The positive result came on the back of substantial rainfall at the catchments. The four major catchments received between 20.4 to 51.6mm of rain, the average being 35.9mm.

This was almost double the long-term average for the period (18.2mm).
With the catchments already benefitting from previous rain, the weekly falls resulted in a relatively high rate of streamflow into the reservoirs.

The 5.9 billion litres of streamflow was 54% above the 30-year average for the period (3.8 billion litres).

Water storages are now 73.3% (1,328.4 billion litres) full, compared with 72.6% (1,316.5 billion litres) at the same time last year – a difference of 11.9 billion litres.

Melburnians used an average of 154 litres of water each a day in the past week, 14 litres a day less than previous week.

Permanent water use rules are currently in place. Visit water.vic.gov.au for information on water use rules and tips on how to save water.

The Victorian Government is helping everyone choose the right water for the job.

Using alternative water sources, such as rainwater from our roofs, reduces our reliance on drinking water supplies. Visit rightwater.vic.gov.au for more information.

Dam storage levels

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73.3% full at 17 April 2014

1,328,368 ML
Reservoir Total capacity (ML) Current volume (ML) % Full Rainfall recorded (mm)
Thomson 1,068,000 821,750
-1,018 since last week
76.9% 51.6 (verified)
View hourly unverified
Cardinia 286,911 173,781
+1,988 since last week
60.6% N/A
View hourly unverified
Upper Yarra 200,579 123,202
-1,920 since last week
61.4% 22.4 (verified)
View hourly unverified
Sugarloaf 96,253 83,352
-28 since last week
86.6% N/A
View hourly unverified
Silvan 40,445 35,250
-279 since last week
87.2% N/A
View hourly unverified
Tarago 37,580 35,817
+363 since last week
95.3% N/A
View hourly unverified
Yan Yean 30,266 26,335
+10 since last week
87.0% N/A
View hourly unverified
Greenvale 26,839 17,777
+7 since last week
66.2% N/A
View hourly unverified
Maroondah 22,179 9,047
-490 since last week
40.8% 20.4 (verified)
View hourly unverified
O'Shannassy 3,123 2,057
+180 since last week
65.9% 23.6 (verified)
View hourly unverified
Total 1,812,175 1,328,368
-1,187 since last week
73.3% 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.


Total 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 51.6 15.0 244.0% 2.0mm
Upper Yarra 22.4 19.9 12.6% 1.8mm
O'Shannassy 23.6 22.0 7.3% 2.2mm
Maroondah 20.4 23.7 -13.9% 6.4mm

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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 3,613 1,350 167.6% 465
Upper Yarra 636 760 -16.3% 385
O'Shannassy 719 850 -15.4% 400
Maroondah 914 860 6.3% 537
Total 5,882 3,820 54% 1,787

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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 154 168

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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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