Flood Return Periods
Flood Return Periods : "Return periods are based on statistical analysis of information gathered about previous floods in the region. Most experts agree that for a flood record length of 100 years, the flood estimates extrapolated from the data should not exceed 200 years. The confidence in the accuracy of a larger-than-200-year flood elevation that is based on a short 100- year record of weather and storm data is lower than it is for estimates of 200-year or less. It should be noted that the period of record is often less than 100 years in the U.S". (Galloway, A California Challenge?, 2007, 14)
No records Found