The bar chart compares the percentage of maximum water capacity in reservoirs across six different Australian cities during October of two consecutive years, 2009 and 2010. Overall, it is obvious that Sydney and Canberra consistently maintained the highest peak, while Melbourne and Darwin recorded the lowest levels. Brisbane was the only city where water level remained entirely unchanged.
In October 2009, Canberra’s reservoirs were at 74% capacity, which experienced a significant rise to peak at 97% by October 2010, making it the highest recorded figure on the chart. Similarly, Sydney started at a high of 75% and saw a marginal increase to 78%. Peth and Melbourne both experienced substantial growth in their water storage; Peth’s level nearly doubled from 38% to 69%, while Melbourne’s figure rose from low of 21% to 38%.
Conversely, Darwin was the only city to register a decline, with its water levels dropping significantly from 43% in 2009 to 24% in 2010. Meanwhile, Brisbane’s reservoir levels showed absolute stability, holding steady at exactly 55% in both years.