The given chart demonstrates the storage capacity of 6 cities in Australia between October 2009 and October 2010.
Overall, the amount of water stored in reservoirs in 6 cities experienced an upward trend, while this figure for the second city decreased over the period. Additionally, the fourth city had remained the same percentage of water for two years.
In October 2009, the proportion of water level in the second and the sixth city recorded the same with 75% of their reservoirs being filled. These metropolises were followed by the fourth, first and fifth city with 55%, 45% and 40% respectively. Lastly, the third city had the least amount of water in its reservoir with just a fifth full.
After one year, the sixth city still took the lead with the highest increase of nearly 25%, which made it close to 100% of the total storage capacity. A similar trend was seen in the second, fifth and third city, albeit at lower rates, rising to over 80%, 60% and nearly 40% respectively. Conversely, there was a decline in the data for the first city, which experienced a fall to approximately 28%. In addition, the fourth city was unchanged in their water level.