At 8 December 2011, the reservoirs in the Brisbane water collection area were 78.3% full, holding approximately 1737.7 GL. At the same time in 2010, these reservoirs were 99.9% full, holding 2067.7 GL. Although the amount of water stored fell by 330.1 GL, or 16%, over the year, this decrease may not be fully reflected in the 'percentage full' figure for 2011 owing to a change in the holding capacity of Brisbane's reservoirs during the same period.
At 8 December 2011, the reservoirs servicing Hobart and Canberra were both near 100% capacity while Perth had the lowest reservoir levels, at 28.5% full.
Information on reservoir levels is collected, standardised and disseminated by the Bureau of Meteorology (BOM). This information includes the total volume of accessible water stored in public water storage facilities (e.g. dams) with a capacity over one gigalitre (GL) as well as the total capacity of water storage facilities in the region (% full).
For more details, including daily updates of reservoir data, go to the BOM website linked above.
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