The provided bar chart depicts data on the water levels of different six Australian cities during the months of October in both 2009 and 2010.
Overall, it is clear that the level of water in reservoirs of six cities were saw a fluctuation over the period of time. Although most cities experienced an upward trend, only one city, Darwin, experienced a downward trend.
According to bar chart, Canberra had the highest level water, at over 75% in 2009 and nearly 100% in 2010. This was followed by water capacity in Sydney city, which increased slightly to just over the 80% in 2010. Next to Brisbane, this city remained unchanged at around 58% in both years.
Moreover, water capacity in Perth witnessed a sharp increase, rising from approximately 40% in 2009 to 70% in 2010. Contrary to the other five cities, Darwin saw a falling tendency, decreasing from about 40% in 2009 to 20% in 2010; this figure was the lowest in 2010. Next to Melbourne, the water level rose by 20% in 2010; however, in 2009, it was at 20%, making it the lowest that year.