This report issued by the U. S. Geological Survey and the U. S. Department of the Interior quantifies the value of U. S. coral reefs in protecting people and infrastructure from coastal hazards that will be exacerbated by climate change and sea-level rise including extreme weather events, flooding, and erosion. The report is intended to inform stakeholders and decision-makers of the value of coral reefs in reducing risk from coastal hazards, and to provide quantitative data that can be used to consider the role coral reefs should play in adaptation and risk mitigation planning.