Weekly water update

Data for week ending 16 October 2014
Last update at 3:00 PM 16 October 2014

Dam storage levels


1451.1 billion litres this week


Less than week ending 09 October 2014

Avg. catchment rainfall

20.4 mm

This week


More than week ending 09 October 2014

Flow into dams

8,526 ML

This week


Less than week ending 09 October 2014

Water use

163 L

Daily avg. per person this week


More than week ending 09 October 2014

Spring storage decline continues

Melbourne dam levels continued their unseasonal downward trend, decreasing by 6.2 billion litres over the past week.

The decline, equivalent to 0.3% of capacity, was well below the average weekly spring performance which usually sees storages gain 0.5%.

The four major catchments received between 11.4 to 28.8 mm of rain, the average being 20.4mm. This was 21.1% below the long-term average for the period of 25.9 mm.

Streamflow struggled again this week without adequate rain to feed it. The 8.5 billion litres of stream flow was 45.4 % below the 30-year average for the period (15.6 billion litres).

Water storages are now 80.1% (1,451.1 billion litres) full, compared with 79.5% (1,441.5 billion litres) at the same time last year – a difference of 9.6 billion litres.

Melburnians used an average of 163 litres of water per person per day. This is 7 litres more than the 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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80.1% full at 16 October 2014

1,451,072 ML
Reservoir Total capacity (ML) Current volume (ML) % Full Rainfall recorded (mm)
Thomson 1,068,000 899,801
+2,427 since last week
84.3% 21 (verified)
View hourly unverified
Cardinia 286,911 186,776
-1,068 since last week
65.1% N/A
View hourly unverified
Upper Yarra 200,579 131,419
-3,035 since last week
65.5% 20.2 (verified)
View hourly unverified
Sugarloaf 96,253 93,035
-1,174 since last week
96.7% N/A
View hourly unverified
Silvan 40,445 34,878
-1,116 since last week
86.2% N/A
View hourly unverified
Tarago 37,580 37,871
+11 since last week
100.0% N/A
View hourly unverified
Yan Yean 30,266 27,760
0 since last week
91.7% N/A
View hourly unverified
Greenvale 26,839 17,907
-108 since last week
66.7% N/A
View hourly unverified
Maroondah 22,179 19,536
-1,965 since last week
88.1% 28.8 (verified)
View hourly unverified
O'Shannassy 3,123 2,089
-246 since last week
66.9% 11.4 (verified)
View hourly unverified
Total 1,812,175 1,451,072
-6,274 since last week
80.1% 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 21.0 26.0 -17.6% 31.0mm
Upper Yarra 20.2 25.0 -18.5% 22.2mm
O'Shannassy 11.4 32.0 -64.6% 29.8mm
Maroondah 28.8 24.0 20.5% 25.6mm

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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 3,368 6,570 -48.7% 5,414
Upper Yarra 2,160 4,060 -46.8% 3,459
O'Shannassy 1,478 2,820 -47.6% 2,403
Maroondah 1,520 2,160 -29.6% 1,898
Total 8,526 15,610 45.4% 13,174

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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 163 156

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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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