Natural Disasters as a Catalyst for Social Capital examines the vastly under-explored link between natural disasters and social capital in regards to the unprecedented June 2008 flood in Cedar Rapids, Iowa. In-depth qualitative interviews with flood victims and key informants in Cedar Rapids reveal that a resident’s perception of social capital after a natural disaster is shaped by their vulnerabilities and social mobility, which vary substantially and need to be understood contextually. This book, in highlighting the enormous impact of one disaster in a mid-sized Midwestern city, offers a framework for a new theory for why social capital shifts in societies from one generation to another: the transformative impact of shared traumas.