The provided chart illustrates figures for water levels in reservoirs of six Australian cities in October 2009 and 2010.
Overall, it was noticeable that most cities saw an increase in water levels in reservoirs, while the opposite was true for Darwin. In addition, Brisbane’s water levels remained stable. Also, Canberra had the highest water levels compared to other cities.
A closer examination of the data revealed that starting at nearly 80% in Oct 2009, Canberra saw a significant increase in water levels, reaching the highest peak at 100% in Oct 2010. Following this city, Sydney’s water levels also began at 80% in 2009; however, after one year, these levels just rose slightly, at 82% in Oct 2010. In terms of Melbourne and Perth, the two cities experienced more than a double increase in the percentage of water levels, at 40% and 65%, respectively, in Oct 2010.
In contrast, Darwin’s water level in reservoirs declined drastically in Oct 2010, ranging from 45% down to 25%. It was noticeable that Brisbane’s water levels remained unchangeable between 2009 and 2010, nearly 60%.