This report on the Cook Islands reports on a study which was part of the Pacific Adaptation to Climate Change (PACC) project. PACC focuses on coastal zone management on Mangaia Island. The project is helping to ‘climate-proof’ coastal development, and to develop an integrated coastal management policy and plan for Mangaia.

The study in this report was developed to demonstrate the combined use of modelling, a climate tool – the Cook Islands Coastal Calculator – and community knowledge to quantify the risk of coastal inundation to property and infrastructure in the village of Oneroa now and under future climate scenarios, and to incorporate this information into community decision making and planning for ‘climate-proof’ development.