Natural Causes
Heavy Rainfall
Heavy rainfall raises the water level. When the water level is higher than the river banks or the dams, the water comes out from the river, there will have flooding.
The areas near Chang Jiang have heavy rainfall. It is because the areas near Chang Jiang is the southeast of China and is closed to the sea, so the on shore wind may push the rain to the areas near Chang Jiang
Rainfall Chart of Wuhan
Source: Living Geography 2A
Wuhan
is a city along Changjiang. From the rainfall chart, we can see that in
May, June and July, there is a high level of rainfall. Therefore, flooding
would more likely to occur in summer.