County-By-County Analysis of Flood Risk (IMAGE) Princeton University, Engineering School Caption Researchers at Princeton University calculated flood risks for 171 counties across four regions: New England (green), mid-Atlantic (orange), southeast Atlantic (blue), and Gulf of Mexico (red). They found that what used to be considered 100-year floods will occur far more often depending on the location. Credit Reza Marsooli et al Usage Restrictions For non-commercial use License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.