The chart illustrates the water levels in the reservoirs of six Australian cities in October 2009 and October 2010. Overall, there were significant changes between these two years, with some cities experiencing an increase while others saw a decrease in water levels.
Darwin and Canberra both recorded notable increases in their reservoir water levels. In Darwin, the water level rose from 75% to 80%, while Canberra saw an increase from 50% to 73%. Brisbane had the most impressive increase, from 75% to 100%.
Conversely, Perth and Melbourne experienced a decrease in their water levels. Perth saw a sharp decline from 51% to 26%, while Melbourne’s water level dropped from 45% to 35%. Sydney was the only city that remained unchanged, maintaining a stable water level of 49% in both years.
In summary, between 2009 and 2010, three cities—Darwin, Canberra, and Brisbane—saw an increase in their reservoir water levels, whereas Perth and Melbourne experienced a decline, and Sydney’s water level remained constant.