The Kaskaskia Island levee system reduces the risk of flooding from the Mississippi River to the Randolph County, Illinois communities of Kaskaskia and Dozaville. Although part of Illinois, Kaskaskia Island is on the Missouri side of the Mississippi River due to historic river migration. The system is federally authorized and constructed and locally operated and maintained by the nonfederal sponsor, Kaskaskia Island Drainage and Levee District. The levee system was originally constructed in the 1910's and federal improvements to the system were completed in 1942 and 1985. The system consists of 14.8 miles of earthen embankment along the Mississippi River and a historic river channel. When the Mississippi River rises, the leveed area may become an island when the surrounding low-lying areas becoming inundated. Within the more than 9,200-acre leveed area are approximately 8,600 acres of productive agricultural bottomland. The leveed area also contains residences, the historic Immaculate Conception Church, as well as the Liberty Bell of the West which was cast in France in 1741 and given as a gift to the original French settlers from King Louis XV. This system provides benefits to approximately 80 people and approximately $101 million in property value. During the 2019 flood event, it is estimated that the system prevented more than $14 million in flood damages.