Federal Disaster Assistance After Hurricanes Katrina, Rita, Wilma, Gustav, and Ike [Updated February 26, 2019] [open pdf - 2MB]
From the Summary: "This report provides information on federal financial assistance provided to the Gulf States after major disasters were declared in Alabama, Florida, Louisiana, Mississippi, and Texas in response to the widespread destruction that resulted from Hurricanes Katrina, Rita, and Wilma in 2005 and Hurricanes Gustav and Ike in 2008. Though the storms happened over a decade ago, Congress has remained interested in the types and amounts of federal assistance that were provided to the Gulf Coast for several reasons. This includes how the money has been spent, what resources have been provided to the region, and whether the money has reached the intended people and entities."
CRS Report for Congress, R43139
Congressional Research Service: https://crsreports.congress.gov/