Recurrence Interval 1 : The average amount of time between events of a given magnitude. For example, there is a 1% chance that a 100-year flood will occur in any given year
National Weather Service NWS Forecast Office, National Oceanic and Atmospheric Administration NOAA, SH Manual, Glossary of Hydrologic Terms, Washington, DC, USA 2015. http://www.nws.noaa.gov/om/hod/SHManual/SHMan014_g lossary.htm, (HydroI - Amer) {889}
