Wave Response of Proposed Improvements to the Shallow-Draft Harbor at Kawaihae, Hawaii
1990
Lillycrop, Linda S. | Bratos, Steven M. | Thompson, Edward F.
This is a study using mathematical models to determine the wave response of two proposed plans of improvement to the shallow draft harbor at Kawaihae, Hawaii. The existing harbor consists of an 850-ft-long, 120-ft-wide entrance channel, a 1.2-acre turning basin, and an 850-ft-long breakwater. Plan 1 includes a 640-ft-long, 80-ft-wide main access channel, a 375-ft-long extension to the existing 850-ft-long west breakwater with a 200-ft-long stub on the harbor side, a 425-ft-long access breakwater with a 400-ft-long wave absorber, a 1,025-ft-long east breakwater, and a 650-ft-long offshore breakwater. Plan 2 includes the same improvements as Plan 1 with the exception of the removal of 200 ft of the west breakwater tip. These plans were developed to provide protection to the existing harbor. Study results indicated that Plan 1 met the requirements to protect the harbor adequately from the incident wave climate. It was determined that this plan will keep the wave height in the harbor berthing areas at 1 ft or lower and in the harbor channels and turning basin at 2 ft or lower approximately 90% of the time per year.
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