severe storms. Wave effects, including ponding on the reefs, setup, runup, and
overtopping, are the major cause of high inundation levels during storm events.
Along the north shore of Cabras Island, the EST was applied to calculate
overtopping-frequency relationships based on historical storm parameters and
calculated response to the storms. These relationships were calculated from the
maximum overtopping rates computed for each storm. Overtopping-frequency
values and their standard deviations were calculated for 2, 5, 10, 25, 50, 75, and
100-year return periods at 15 profiles. The proposed project has a major impact
on reducing overtopping rates.
Similarly, the EST was applied along the south shore of Cabras Island to
calculate stage-frequency relationships for six return periods, up to the 100-year
event. The relationships are based on maximum water levels for each storm due
to storm surge, tide, and wave effects.
Summary and Conclusions