ValidateSQL: The “20-Year” Surge is better described by the 20-Year Recurrence Interval or 5.0% Annual Exceedance Probability that describes the percent chance of the given event occurring in any given year. HAT or Highest Astronomical Tide is the elevation of the highest predicted astronomical tide expected to occur at a specific tide station over the National Tidal Datum Epoch. High SLC refers to the USACE High Curve over the 50-year planning horizon or 2073. (ID: 40)

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ValidateSQL: The “20-Year” Surge is better described by the 20-Year Recurrence Interval or 5.0% Annual Exceedance Probability that describes the percent chance of the given event occurring in any given year. HAT or Highest Astronomical Tide is the elevation of the highest predicted astronomical tide expected to occur at a specific tide station over the National Tidal Datum Epoch. High SLC refers to the USACE High Curve over the 50-year planning horizon or 2073. (ID: 40)