Choosing which floods are the “most memorable” in the last 100 years in the US is tricky. If you lived through a flood, that’s going to be what you remember. Every state has experienced significant flooding in the last century. So which do you choose?The following five floods have things that are unique in size, deadliness, or circumstances, and so they make my list of most memorable floods in the past century. Here they are in chronological order.