Weekly water update

Data for week ending 18 August 2016
Last update at 3:00 PM 18 August 2016

Dam storage levels


1176.2 billion litres this week


More than week ending 11 August 2016

Avg. catchment rainfall

5.4 mm

This week


Less than week ending 11 August 2016

Flow into dams

12,796 ML

This week


Less than week ending 11 August 2016

Water use

140 L

Daily avg. per person this week


Same as week ending 11 August 2016

Average storage gain despite low rain, streamflow

Melbourne’s water storage levels increased by 0.5% of capacity over the past week, representing a net gain of 9 billion litres.

The increase in dam levels was a legacy of wetter conditions in previous weeks, and came despite lower than average rainfall and streamflow.

The four major catchments received between 0.8 to 13.6 mm of rain, the average being 5.4 mm.

This was 80.6% below the long-term average for the period of 27.8 mm.

The 12.8 billion litres of runoff that flowed in Melbourne’s reservoirs was 33.2% below the 30-year average for the period (19.2 billion litres).

Water storages are now 64.9% (1,176.2 billion litres) full, compared with 71.4% (1,294.4 billion litres) at the same time last year - a difference of 118.2 billion litres.

Melbournians used an average of 140 litres of water per person per day, the same as 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 [-]

64.9% full at 18 August 2016

1,176,183 ML
Reservoir Total capacity (ML) Current volume (ML) % Full Rainfall recorded (mm)
Thomson 1,068,000 652,634
+4,462 since last week
61.1% 0.8 (verified)
View hourly unverified
Cardinia 286,911 183,482
+19 since last week
64.0% N/A
View hourly unverified
Upper Yarra 200,579 114,250
+1,371 since last week
57.0% 9.8 (verified)
View hourly unverified
Sugarloaf 96,253 84,023
+2,520 since last week
87.3% N/A
View hourly unverified
Silvan 40,445 33,931
-545 since last week
83.9% N/A
View hourly unverified
Tarago 37,580 36,815
+144 since last week
98.0% N/A
View hourly unverified
Yan Yean 30,266 24,878
+65 since last week
82.2% N/A
View hourly unverified
Greenvale 26,839 24,004
+452 since last week
89.4% N/A
View hourly unverified
Maroondah 22,179 19,014
+588 since last week
85.7% 3.2 (verified)
View hourly unverified
O'Shannassy 3,123 3,152
-56 since last week
100.0% 13.6 (verified)
View hourly unverified
Total 1,812,175 1,176,183
+9,020 since last week
64.9% 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 0.8 25.3 -96.8% 10.6mm
Upper Yarra 9.8 28.6 -65.7% 1.0mm
O'Shannassy 13.6 38.1 -64.3% 0.8mm
Maroondah 3.2 24.9 -87.1% 1.4mm

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 4,858 7,980 -39.1% 6,564
Upper Yarra 3,263 5,550 -41.2% 5,315
O'Shannassy 2,909 3,160 -7.9% 3,051
Maroondah 1,766 2,480 -28.8% 1,962
Total 12,796 19,170 33.2% 16,892

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 140 140

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