Coastal Resilience Benefits from Restoration and Protection of Mangroves and Tidal Marshes (Coastal Resilience Methodology)

Introduction

This Coastal Resilience methodology provides a science based framework to quantify how restoring and protecting mangroves and tidal marshes reduces coastal flooding, erosion, and storm related damage. It models flood extent, depth, and property exposure under different storm probabilities, including extreme events, and compares baseline conditions without intervention to project scenarios where ecosystems are restored or protected. The methodology calculates Coastal Resilience Assets as the reduction in expected annual damage to property, expressed in monetary terms, based on changes in vegetated coastal areas. It can also estimate People Resilience Benefits, reflecting decreases in populations exposed to flooding. By demonstrating the protective value of coastal ecosystems, this approach supports climate adaptation, strengthens resilience to hazards, and contributes to Sustainable Development Goals focused on safe, resilient communities and climate action.