Methodologies -

Methodology for Coastal Resilience Benefits from Restoration and Protection of Tidal Wetlands


Coastal ecosystems provide communities with protection against the impacts of climate-related hazards and natural disasters by reducing erosion and flooding from storms and stabilizing and raising shorelines in the face of sea-level rise.

Restoring and protecting coastal ecosystems contributes to the United Nations’ Sustainable Development Goal 13: Taking urgent action to combat climate change and its impacts, and Target 13.1 Strengthen resilience and adaptive capacity to climate-related hazards and natural disasters in all countries. This methodology provides a deemed estimate approach and a scenario approach to quantify the annual flood risk reduction (i.e., resilience) benefits of coastal ecosystems to people [Indicator 13.1.1]. SD VISta assets quantified using this methodology are not to be used for purposes of offsetting negative impacts of activities that may increase the number of persons affected by coastal flooding events.

This methodology currently applies to the restoration and protection of coastal wetlands including tidal marshes and mangroves and may be expanded to cover the restoration or protection of other coastal habitats such as coral reefs and oyster reefs.

The public comment period for this methodology was 20 January 2021 to 19 February 2021.