The bar chart delineates the water levels, expressed as a percentage of maximum capacity, in six Australian cities for the months of October in 2009 and 2010.
A notable fluctuation in water levels is observed across the cities, with Canberra exhibiting the highest levels, particularly in 2010, while Melbourne consistently recorded the lowest capacity over the specified period.
In detail, Canberra’s water level exhibited a remarkable increase from approximately 85% in October 2009 to a full capacity of 100% in October 2010. Similarly, Sydney experienced a positive change, rising from about 58% in 2009 to approximately 70% in 2010. Conversely, Brisbane’s water levels demonstrated relative stability, declining slightly from around 55% in 2009 to 50% in 2010.
Melbourne and Perth showed significant upward trends in their water levels. Specifically, Melbourne increased from approximately 35% in 2009 to 60% in 2010, indicating a substantial improvement. Perth’s levels also rose, from 25% in 2009 to about 50% in the subsequent year. In sharp contrast, Darwin experienced a substantial decrease in water capacity, dropping from approximately 65% in 2009 to about 25% in 2010. This decline distinguishes Darwin as the city with the most notable decrease in water levels during the observed period.