Water Report
Detailed information on Melbourne's water supply system. Information on Melbourne's water storages is updated daily by around 2pm, seven days a week.
Melbourne's Water Storages
64.7% full at 22-May-2012
| Reservoir | Capacity at full supply (ML) | Current Volume (ML) | % Full | Change since Yesterday (ML) | Rainfall (mm)* to 8:00am | Rainfall Data |
|---|---|---|---|---|---|---|
| Thomson | 1,068,000 | 610,214 | 57.1 | +267 | 0.0 | Hourly data... |
| Cardinia | 286,911 | 213,481 | 74.4 | +321 | Hourly data... | |
| Upper Yarra | 200,579 | 123,711 | 61.7 | -390 | 0.0 | Hourly data... |
| Sugarloaf | 96,253 | 94,914 | 98.6 | -82 | Hourly data... | |
| Silvan | 40,445 | 36,279 | 89.7 | -95 | 0.0 | Hourly data... |
| Tarago | 37,580 | 20,562 | 54.7 | -26 | 0.0 | Hourly data... |
| Yan Yean | 30,266 | 27,162 | 89.7 | 0 | Hourly data... | |
| Greenvale | 26,839 | 20,352 | 75.8 | +31 | Hourly data... | |
| Maroondah | 22,179 | 22,199 | 100.0 | -10 | 0.0 | Hourly data... |
| O'Shannassy | 3,123 | 2,864 | 91.7 | -3 | 0.0 | Hourly data... |
| Total | 1,812,175 | 1,171,738 | 64.7 | +13 |
- Current volume results are preliminary and validated at the end of each month
- Validated rainfall provided for four major catchments only
- Access rainfall data (measured by field monitoring devices) for your area
Thomson Reservoir storage levels – April-June 2012
Environmental flows (above minimum levels) are scheduled to be released into the Thomson River on behalf of Western Gippsland Catchment Management Authority between April and June 2012. Visit
Western Gippsland Catchment Management Authority website for more information.
View an interactive map of Melbourne's water supply network.
Note: This map requires you have Flash installed.
Storage graph 2009 - 2011
Last Updated 17-May-2012
2009 - 10 2010 - 11 2011 - 12
100% capacity = 1,812,175 ML
NB: Prior to 1 July 2010, 100% capacity = 1,810,500 ML
What does this graph show?
Total storage level of Melbourne’s reservoirs. This shows a trend of decreasing storage levels during the first half of the year, and then increasing or stabilising during the second half of the year when inflows to the reservoirs are more frequent.
View interactive storage graph for 1997-2011 (opens in a new window)
Daily Water Consumption
994ML
- Melbourne's daily water consumption to 8am today (includes Western Water and total amount used by both business and households).
Water flowing into Melbourne's main water supply reservoirs (annual totals)
What does this graph show?
Annual inflows into Melbourne's 4 major reservoirs since 1913. While ups and downs are a constant feature, the average has dropped rapidly by almost 40% in the past 15 years. This included a devastating drop in 2006, which the CSIRO had forecast could occur under a 'severe' climate change scenario in 2050.
Weekly water report
Find out what impact rain and consumption has had on Melbourne's storage levels. Detailed storage data plus commentary from Melbourne Water. Updated each Friday.
Rainfall data
Monthly rainfall totals from a network of about 130 data stations across Melbourne.