The chart illustrates the water levels in six Australian cities in October 2009 and October 2010.
In general, the water levels in October 2010 shows a higher level in reservoirs. In October 2010, city 6 recorded the highest water level, followed by city 2. Meanwhile in October 2019 and 2010, city 4 recorded identical water levels, both standing at the same capacity.
In October 2009, city 2 and 6 shows the highest water levels without any difference, followed by city 4 that indicates a slight difference in water levels. City 4 and 1 shows a difference about 10% in water levels. City 3 shows the lowest water level with a slight huge gap with city 5 with a difference of 15%. The widest gap in the chart is between city 3 and city 2 or 6, with a difference of 50%.
In October 2010, the graph shows that city 6 had the highest water level, followed by city 2 with a difference of 17% compared to city 6. City 5 and city 4 has a small difference of 6%. City 3 and city 2 shows a difference 10% with city 3 having 39% and city 2 having 29%. Overall, city 2 had the highest water level and city 6 has the highest level of water reservoirs.