Whangaparāoa first to get Coastal Management Plan Whangaparāoa Peninsula’s coastline is the subject of a pilot that looks at what the community values most about its shoreline. Photos, Auckland Council. Auckland Council has chosen Whangaparāoa Peninsula for its first Coastal Management Plan. The plan sets out a sustainable approach to coastal management, looking at what short to long-term responses might be needed to tackle issues such as sea level rise and increasing flood and storm events over a total timeframe of 100 years. It aims to: manage the impact of erosion and flooding; manage the impacts of rising sea levels; identify risks to safety, coastal defences and surrounding infrastructure; set a long-term plan to manage the coastline.