Maintenance of Navigable Depths at the Hawaii Kai Marina and Entrance Channel Oahu, Hawaii

摘要

The Hawaii Kai Marina (marina) is located on the southern coast of Oahu, approximately 12 miles east of downtown Honolulu. The entrance channel to the marina experiences significant sand deposition and shoaling, which interfered with navigation many times in past years, and requires repeated episodes of sand removal. Shoaling within the marina occurs at a much slower rate but, also requires attention. The case study presented herein presents the formulation of a plan to dredge both the entrance channel and the marina interior, while maximizing the beneficial reuse and on-site disposal of the dredged materials. This paper also discusses the ongoing investigation of sustainable management schemes for sand deposition in the entrance channel, and reviews some of the environmental and design challenges that are unique to this location in Hawaii.