The bar chart compares six Australian cities in terms of the percentage of water storage in reservoirs in two separated years: 2009 and 2010. Overall, the percentage of water storage in all cities increased. Notably, almost every city experienced upward trend, while Darwin showed the opposite. Additionally, Brisbane , throughout the period, did not changed at all.
Regarding the cities which experienced rising trend, namely Sydney, Melbourne, Perth, and Canberra. Initially, Sydney and Canberra had sizeable level of water with both possessing just under 80%, while the rest counterparts were less than 60%. In the following year(2010), the Perth and Canberra experienced dramatic increase, where the former city had almost doubled its initial level of water storage, while the latter peaked at approximately 100%. Additionally, the that of rest cities(Melbourne and Sydney) increased relatively lesser.
Moving on to cities with disproportionated trends, the Darwin , although, in 2009 having about 40% halved in the following year. When it comes to Brisbane, its water storage level remained unchanged at just under 60%.