What is the setting of Rising Tide: The Great Mississippi Flood of 1927 and How it Changed America by John M. Barry?

The setting of the book is predominantly divided between two focused locales - the city of Greenville, Mississippi, and the city of New Orleans. The Greenville sections of the book include to a lesser extent Washington County and the entire Mississippi-Yazoo Delta region, while the New Orleans sections of the book often include St. Bernard and Plaquemines Parishes.