blog posts Gibson City flooding in maps, simulations and images Aug 26, 2021 12:15 pm by Illinois State Water SurveyOutreach Share on Facebook Tweet Email Images On August 12, a line of thunderstorms developed along southern Ford County, IL. Nearly 10 inches of rain fell in under 10 hours in Gibson City, innundating the small town. The Illinois State Water Survey documented this historic downpour. Share on Facebook Tweet Email