The bar chart illustrates information about the percentages of water levels stored across 6 different Australian cities from October 2009 to October 2010.
Overall, the majority of cities witnessed an increase or stability in terms of water levels over the two years, with Sydney and Canberra accounted for the highest percentages. Conversely, Darwin was the only city to show a significant decline in water rates.
Sydney and Canberra had the highest water storage in 2009, each at approximately 75%. However, the water levels of the former rose drastically to nearly 100%, while the latter reached to about 80%. Similarly, Melbourne and Perth also recorded notable improvements. Melbourne almost doubled the water rates from 20% in 2009 to 40% in 2010, whereas the figure for Perth increased about 1.5 times, starting at just 50% in 2009 and ending with roughly 75% in 2010.
On the other hand, Brisbane remained stable over the two years, with water levels standing at nearly 58% each. In contrast, there was a stark difference in the reservoir levels of Darwin over time. The proportions of this metropolis experienced a sharp decline, dropping from 42% in 2009 to about half of it in 2010, making this city the one with the lowest water storage by the end of the period.