Weekly water update

Data for week ending 30 October 2014
Last update at 4:00 PM 30 October 2014

Dam storage levels


1445.3 billion litres this week


Same as week ending 23 October 2014

Avg. catchment rainfall

24.9 mm

This week


More than week ending 23 October 2014

Flow into dams

6,951 ML

This week


More than week ending 23 October 2014

Water use

171 L

Daily avg. per person this week


Less than week ending 23 October 2014

Storms save storages from decline

Melbourne storage levels held steady this week, mirroring last Thursday’s result of 79.8% full.

The storms in Melbourne on Monday provided a short respite for thirsty catchments, and stopped storage levels declining this week.

The four major catchments received between 21 to 35.6 mm of rain, the average being 24.9mm. This was 38.2% above the long-term average for the period, 18mm.

The 7 billion litres of stream flow that ran into reservoirs was only half of the 30-year average for the period (13.8 billion litres).

Around 450 million litres of environmental water was released to support native migratory fish in the Yarra and Thomson Rivers.

Water storages are now 79.8% (1,445.3 billion litres) full, compared with 80.1% (1,452.0 billion litres) at the same time last year – a difference of 6.7 billion litres.

Melburnians used an average of 171 litres of water per person per day. This is 7 litres less 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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79.8% full at 30 October 2014

1,445,332 ML
Reservoir Total capacity (ML) Current volume (ML) % Full Rainfall recorded (mm)
Thomson 1,068,000 893,752
-5,214 since last week
83.7% 21 (verified)
View hourly unverified
Cardinia 286,911 184,076
-926 since last week
64.2% N/A
View hourly unverified
Upper Yarra 200,579 134,809
+4,128 since last week
67.2% 25.6 (verified)
View hourly unverified
Sugarloaf 96,253 92,079
-391 since last week
95.7% N/A
View hourly unverified
Silvan 40,445 36,247
+904 since last week
89.6% N/A
View hourly unverified
Tarago 37,580 37,853
+54 since last week
100.0% N/A
View hourly unverified
Yan Yean 30,266 27,786
+52 since last week
91.8% N/A
View hourly unverified
Greenvale 26,839 17,754
+34 since last week
66.2% N/A
View hourly unverified
Maroondah 22,179 18,790
+182 since last week
84.7% 35.6 (verified)
View hourly unverified
O'Shannassy 3,123 2,186
-44 since last week
70.0% 29.4 (verified)
View hourly unverified
Total 1,812,175 1,445,332
-1,221 since last week
79.8% 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

Show details [+]
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 19.0 11.1% 26.8mm
Upper Yarra 25.6 16.0 63.1% 21.0mm
O'Shannassy 29.4 21.0 43.4% 27.2mm
Maroondah 35.6 19.0 92.4% 20.4mm

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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 2,930 6,050 -51.6% 6,024
Upper Yarra 1,232 3,530 -65.1% 3,804
O'Shannassy 1,327 2,360 -43.8% 2,310
Maroondah 1,462 1,900 -23.1% 2,231
Total 6,951 13,840 49.8% 14,369

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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 171 178

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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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