Weekly water update

Data for week ending 26 May 2016
Last update at 6:00 PM 26 May 2016

Dam storage levels


1065.0 billion litres this week


Less than week ending 19 May 2016

Avg. catchment rainfall

19.8 mm

This week


More than week ending 19 May 2016

Flow into dams

2,874 ML

This week


Less than week ending 19 May 2016

Water use

150 L

Daily avg. per person this week


Less than week ending 19 May 2016

Dam levels continue to drop


Melbourne’s water storages are now 58.8% (1,065 billion litres) full, compared to 69.3% (1,256.1 billion litres) at the same time last year - a difference of 191.1 billion litres.

The 0.3% drop, equivalent to 6.6 billion litres, was three times higher than the average weekly decline for May last year, for the second week in a row.

The four major catchments received between 10.8 and 48.4 mm of rain this week.

The average amount (19.8mm) is slightly below (-1.5%) the long-term average for the period of 20.1 mm.

The resulting 2.9 billion litres of water flowing into dams is 46.9% below the 30-year average for the period (5.4 billion litres).

Melburnians used an average of 150 litres of water per person per day, three 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

Hide details [-]

58.8% full at 26 May 2016

1,064,951 ML
Reservoir Total capacity (ML) Current volume (ML) % Full Rainfall recorded (mm)
Thomson 1,068,000 605,823
-5,664 since last week
56.7% 10.8 (verified)
View hourly unverified
Cardinia 286,911 175,967
+1,730 since last week
61.3% N/A
View hourly unverified
Upper Yarra 200,579 101,241
-515 since last week
50.5% 22.2 (verified)
View hourly unverified
Sugarloaf 96,253 53,288
-1,257 since last week
55.4% N/A
View hourly unverified
Silvan 40,445 36,311
+191 since last week
89.8% N/A
View hourly unverified
Tarago 37,580 32,993
0 since last week
87.8% N/A
View hourly unverified
Yan Yean 30,266 23,813
-40 since last week
78.7% N/A
View hourly unverified
Greenvale 26,839 23,403
-248 since last week
87.2% N/A
View hourly unverified
Maroondah 22,179 9,678
-527 since last week
43.6% 21.2 (verified)
View hourly unverified
O'Shannassy 3,123 2,434
-280 since last week
77.9% 48.4 (verified)
View hourly unverified
Total 1,812,175 1,064,951
-6,610 since last week
58.8% N/A

Download this data (.CSV)

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 10.8 19.7 -45.2% 25.2mm
Upper Yarra 22.2 19.8 12.1% 37.0mm
O'Shannassy 48.4 23.5 106.0% 56.0mm
Maroondah 21.2 18.7 13.4% 34.2mm

Download this data (.CSV)

Rainfall data is a weighted average catchment figure that is validated and provided for four major catchments only.

Flow into dams

Show details [+]
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 1,382 2,270 -39.1% 2,148
Upper Yarra 143 1,010 -85.8% 413
O'Shannassy 702 1,060 -33.8% 977
Maroondah 647 1,070 -39.5% 886
Total 2,874 5,410 46.9% 4,424

Download this data (.CSV)

Flow into dams is a total of water flowing from our four major catchments into reservoirs.

Water use for Melbourne

Show details [+]
Daily water use This week's daily average (L) Last week's daily average (L)
Per Person Water Use 150 153

Download this data (.CSV)

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.

Copyright Melbourne Water