The provided bar chart compares water levels in the reservoirs of six Australian cities (Darwin, Sydney, Melbourne, Brisbane, Perth, and Canberra) between October 2009 and October 2010. The figures are expressed as percentages of total capacity.
Overall, water levels increased across the majority of cities over the year. However, Brisbane’s capacity remained unchanged, and Darwin was the only city to record a decline in its reservoir levels.
Focusing on the highest figures, Canberra and Sydney were the leaders in capacity in October 2010. Canberra recorded a substantial rise, jumping from approximately 75% to 97% capacity, while Sydney reached 81%, up from 75%. Perth and Brisbane both stood at the mid-point, with Perth’s capacity increasing slightly to 61% and Brisbane’s level remaining static at 55% in both years.
In contrast, Melbourne and Darwin had the lowest reservoir levels. Melbourne saw an increase from 25% to 38% over the period, making it the city with the lowest capacity in 2010. Uniquely, Darwin’s levels fell marginally from 45% to 38% by October 2010, the only city to register a decline.