The Hekili Point study area (transects 143 – 326) extends from Ukumehame Gulch in the southeast to Olowalu Wharf in the northwest. The shoreline is composed of both sandy and cobble beach. A fringing reef fronts the shoreline while the back shore is dominated by Honoapiʻilani Highway and stands of kiawe trees. The vegetation line and low water mark in this area is difficult to delineate in sections characterized by canopy along the shoreline. An approximation of the base of the trunks was necessary in all years of aerial photograph coverage.
The area as a whole has experienced a trend of moderate erosion, with an average rate of -0.4 ft/yr. There are, however, small pockets of areas indicating accretion all along the study area. The shoreline along the western portion of the area (transects 266 – 326) is dominated by stands of kiawe trees. This section has experienced moderate erosion over time with an average rate of -0.8 ft/yr. The eastern portion of the study area (transects 143 – 265) is backed by Honoapiʻilani Highway. Here, several sections of the highway are directly threatened by shoreline change. This portion of coastline has experienced mild to moderate erosion over time with an average rate of -0.4 ft/yr.
Last updated: July 2021
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