Annual flood definition
Annual flood means a discharge (Q) or flood flow event that occurs at a high frequency, i.e., there is greater than a 50% chance of a flood stage (<Q2) of at least this level occurring in any given year.
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Related to Annual flood
Base flood means the flood having a one percent chance of being equaled or exceeded in any given year.
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 equaled or exceeded once in 100 years on the average over a significantly long period.
Area of special flood hazard means the land in the floodplain within a community subject to a one percent or greater chance of flooding in any given year.
Special Flood Hazard Area (SFHA) means the land in the floodplain subject to a one percent (1%) or greater chance of being flooded in any given year, as determined in Article 3, Section B of this ordinance.
Semi-annual (2/Year) sampling frequency means the sampling shall be done during the months of June and December, unless specifically identified otherwise.