 The most well-known historical event to impact Calhoun County is likely the Great Flood of 1993.Calhoun County is a peninsula nestled between the Illinois and Mississippi Rivers, which both saw record flooding during 1993.The Great Flood of 1993, the name it is now known as, impacted several villages in Calhoun and completely destroyed the village of East Hardin which once sat across the Joe Page Bridge when the Nutwood levee broke in August 1993.