Physical Sciences and Mathematics Commons^™

Using Disaster Outcomes To Validate Components Of Social Vulnerability To Floods: Flood Deaths And Property Damage Across The Usa, Beth Tellman, Cody Schank, Bessie Schwarz, Peter D. Howe, Alex De Sherbinin

Environment and Society Faculty Publications

Social vulnerability indicators seek to identify populations susceptible to hazards based on aggregated sociodemographic data. Vulnerability indices are rarely validated with disaster outcome data at broad spatial scales, making it difficult to develop effective national scale strategies to mitigate loss for vulnerable populations. This paper validates social vulnerability indicators using two flood outcomes: death and damage. Regression models identify sociodemographic factors associated with variation in outcomes from 11,629 non-coastal flood events in the USA (2008–2012), controlling for flood intensity using stream gauge data. We compare models with (i) socioeconomic variables, (ii) the composite social vulnerability index (SoVI), and (iii) flood …