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Hurricane Iwa Experience and Coastal Flood Hazard Estimation in Hawaii

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Title: Hurricane Iwa Experience and Coastal Flood Hazard Estimation in Hawaii
Authors: Cox, Doak C.
LC Subject Headings: Hurricane damage -- Hawaii.
Hurricane Iwa, 1982.
Flood forecasting -- Hawaii.
Issue Date: Jan 1983
Publisher: Environmental Center, University of Hawaii at Manoa
Citation: Cox DC. 1983. Hurricane Iwa experience and coastal flood hazard estimation in Hawaii. Honolulu (HI): Environmental Center, University of Hawaii.
Abstract: This report comments on a recommendation regarding the study of hurricane frequency in Hawaii and the incorporation of hurricane flood experience with tsunami experience in the estimation of the coastal flood hazard in the National Flood Insurance Program (NFIP). The recommendation is one in the report of a Federal Emergency Management Administration interagency team investigating the effects of Hurricane Iwa. The comments are those of a person who has been involved, substantially but indirectly, in the development of the NFIP estimates of the tsunami hazard, but has no special knowledge about hurricanes and only indirect information on Iwa's effects. Poipu, Kauai, is selected for investigation of methods and effects of incorporating the hurricane experience in coastal flood evaluation because that site probably represents an extreme example of discrepancies between the extent of coastal flooding estimated on the basis of tsunami experience alone and the flooding due to Iwa. The investigation results suggest that, for the lOO-year recurrence interval of principal concern in the NFIP, the near-shore flood height at Poipu should be increased significantly in the light of Iwa experience, but not to the heights reached by Iwa's wave. Information is presented on five high-wave events preceding Iwa, including two tsunamis, whose records are pertinent to but have not previously been used in estimating the coastal flood hazard at Poipu.
Pages/Duration: 11, [14] p.
Appears in Collections:Environmental Center Special Reports

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