Fig. 1: Regional and demographic variation of human-flood dynamics across the CONUS coast.

a Study region (b) Distribution of calibrated parameter values and exogenous variables (U[Urbanization], R[Rain threshold], S[Surge threshold]) across CONUS coasts, categorized into quartiles (0–25th, 25–50th, 50–75th, 75–100th). b2, b3, d, & b1 are housing parameters representing immediate drop in housing value after flood, sustained decline in following years, duration until the impact of flooding subside, and rate at which housing value rises in no-impact years respectively. ɑa & μa are flood insurance participation parameters indicating rise in participation due to flood and gradual lapse rate in subsequent years. ɑd is the risk attitude parameter representing the impact of flood in settlement density. c Correlation plot between model parameters and measures of social vulnerability for the entire CONUS coastline. Significance level are measured at P < 0.05(*), P < 0.01(**), and P < 0.001(***) using Spearman’s Ranked correlation.