100-year flood definition

100-year flood means a flood that has a 1-percent or greater chance of recurring in any given year or a flood of a magnitude equalled or exceeded once in 100 years on the average over a significantly long period.
100-year flood means a flood that has a one percent chance of being equalled or exceeded in any given year.
100-year flood means a flood, the magnitude of which has a one percent (1%) chance of being equaled or exceeded in any given year or which, on the average, will be equaled or exceeded at least once every one hundred (100) years.

More Definitions of 100-year flood

100-year flood or "base flood" means a flood that has a one percent or less chance of recurring in any given year or a flood of a magnitude equaled or exceeded once in one hundred years on the average over a significantly long period.
100-year flood means a flood with an occurrence probability of one percent (1%) each year as determined by the Indiana department of natural resources.
100-year flood means the flood having a one percent chance of being equaled or
100-year flood means the condition of flooding having a one percent chance of annual occurrence.
100-year flood means a flood having a recurrence interval that has a one-percent chance of being equaled or exceeded during any given year (1-percent-annual-chance flood). The terms "one-hundred-year flood" and "one percent chance flood" are synonymous with the term "100-year flood." The term does not imply that the flood will necessarily happen once every one hundred years.
100-year flood means the flood having a one per cent chance of being equaled or exceeded in magnitude in any given year.
100-year flood means a flood that has a one-percent or greater chance of recurring in any given