The bar chart illustrate the difference of water levels of six big cities in Australia between October 2009 and October 2010.
Overall, the most significant number of water levels can be seen in Canberra in Oct 2010 while there was the fewest figure in Melbourne in Oct 2009. In addition, the biggest disparity was seen in Perth city.
Firstly, the figure for Darwin stood at under 50% in 2009, then it declined by significantly two times in 2010. Moreover, it can be seen that the proportion of water in Brisbane remain unchanged under 60% from 2009 to 2010.
Secondly, there was a slight increase from under 80% to blow 80% in the figure for Sydney over the period. Similarly, the percentage of water levels in Melbourne experienced a two-fold rise to 40% and that of water levels in Perth climbed considerably from 40% to approximately 70% in 2010. After one year, the figure for Canberra rose gradually from 75% to under 100%.
