View daily and weekly water storage levels for Melbourne, as well as summaries of catchment rainfall, reservoir inflow and water usage data – updated each afternoon.
Note: the graph below is indicative and not to scale. Learn how to select and compare data.
Current volumes at our 10 major reservoirs were recorded at 8am on the selected date, and can be viewed as a table or chart. Recorded rainfall over the total period (daily or weekly) is provided below as verified data for the four main catchments only. Learn how data is calculated.
Our storages received 50 gigalites of water from the Victorian Desalination Plant from July to December 2025, completing the 2025-26 water order. Water orders are placed by Minister for Water on 1 April each year.
Monthly storage levels are available for 1948 onwards. Add multiple years to compare levels, or select ‘all years’ to view changes over time.
Note: the current storage capacity (1,812 GL) has applied since July 2010, but has changed over the years. See historical changes.
Total (verified) rainfall recorded at the four major catchments that contribute most to Melbourne’s storage levels. Rainfall elsewhere has no significant impact, but is provided as hourly unverified data.
Daily data includes the 24 hours to 8am; weekly includes the 7 days to Thursday 8am. Monthly and long-term averages are based on the past 30 years.
Inflows into the four major reservoirs from rivers, streams and rainfall. Flows into other reservoirs are used to calculate changes to total water storage levels, but usually have little impact.
Daily data includes the 24 hours to 8am; weekly includes the 7 days to Thursday 8am. Weekly and monthly averages are based on the past 30 years.
Total usage across Melbourne and non-metropolitan areas serviced by Greater Western Water, recorded over the 24 hours to 8am. Per person usage is calculated at the end of each week (Thursdays). The average for the month is based on the previous 5 years.
Note: changes to storage levels also factor in environmental water releases and other water losses.
Install a rainwater tank. Capturing rainwater to use in your garden is an excellent way to reduce the amount of drinking water you use.
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Disclaimer
While all due skill and attention has been taken in collecting, validating and providing data, Melbourne Water Corporation shall not be liable in any way for loss of any kind including damages, costs, interest, loss of profits or special loss or damage, arising from any error, inaccuracy, incompleteness or other defect in this information.
In utilising this information the recipient acknowledges that Melbourne Water Corporation makes no representations as to the accuracy or completeness of this information and the recipient should therefore carry out their own investigations if appropriate.