Here’s what the syllabus says you need to know:
“Rivers flood due to a number of physical and human causes. Flooding appears to be an increasingly frequent event.”
“The effects of and responses to floods vary between areas of contrasting levels of wealth…..A case study of flooding in a rich part of the world and one from a poorer area – the different effects of and responses to flooding.”
So the 3 key things are that you know what causes the flooding, what effects the flooding has and how people respond to the flooding
Here’s a short video about the issue
If all else fails in your research type in Bangladesh floods 2004 on the bbc website
There are too many slides in this powerpoint but it is good!!