A Study of a Flood Control Levee Swamp System

by Edmond D. H. Cheng, Univ of Hawaii at Manoa, Honolulu, United States,



Document Type: Proceeding Paper

Part of: Structures for Enhanced Safety and Physical Security

Abstract:

In an attempt to reconstruct the events of the more than 100-year 1987 New Year's Eve storm that occurred on Oahu, Hawaii, an analysis of a complicated overland flow phenomenon and hydraulic routing process, under dynamic tidal conditions, were applied to a levee swamp system. Since only very fragmentary rainfall and runoff data of the extreme event were available, the inflow hydrographs for the Kawainui Swamp were successfully simulated by means of the Nash-Muskingum routing of rainfall excess. The results of the study indicated that the levee system, which was designed by the U.S. Army Corps of Engineers in 1956 and constructed in 1960, may be erroneously designed.



Subject Headings: Levees and dikes | Flood routing | Wetlands (fresh water) | Control systems | Overland flow | Hydraulic design | Case studies | Hawaii | United States

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