A flood recurrence interval of 100 years means that floods of that size will occur only once every 100 years.

Question

Quizplus · Accepted Answer

A flood recurrence interval of 100 years means that there is a 1% chance of a flood of that size occurring in any given year. It is possible for multiple floods of that size to occur within a 100-year timeframe, or for no floods of that size to occur for more than 100 years. Therefore, it is more accurate to say that a flood with a recurrence interval of 100 years has a 1% chance of occurring in any given year.

A Flood Recurrence Interval of 100 Years Means That Floods