‘Disturbing’ study confirms dunes disappearing, breach threat

The studies confirmed the suspicions of many locals that the Mangawhai dunes have been slowly disappearing over several years. Potential threats to Mangawhai’s distal spit, which is crucial in protecting the coastline, were outlined at a meeting hosted by the Mangawhai Harbour Restoration Society (MHRS) on March 21. The guest speakers were marine geologist and coastal oceanographer Dr Terry Hume and Auckland University School of Environment Professor Mark Dickson. In 2024, Hume was commissioned by Mangawhai Matters to do a study covering coastal processes, including climatic and ocean currents...