Many Hawaiian Beaches Are Eroding
An assessment of coastal change over the past century has found 70 percent of beaches on the islands of Kaua’i, O’ahu, and Maui are undergoing long-term erosion, according to a U.S. Geological Survey (USGS) and Univ. of Hawaii (UH) report released today.
Scientists from the USGS and the Univ. of Hawaii’s School of Ocean and Earth Science and Technology (SOEST) at UH studied more than 150 miles of island coastline (essentially every beach) and found the average rate of coastal change – taking into account beaches that are both eroding and accreting – was 0.4 feet of erosion per year from the early 1900s to 2000s. Of those beaches eroding, the most extreme case was nearly 6 feet per year near Kualoa Point, East O’ahu.
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