Principle objective of this lecture is to present on Hurricane Katrina. Hurricane Katrina hit the U.S. on August 29, 2005. Winds of 140 mph created a 30-foot storm surge. Water breached the dam that protected the city of New Orleans and flooded the low-lying coastlines of Louisiana, Alabama and Mississippi. With the damage estimated at more than $200 million, and more than one million people forced to leave their homes, Katrina is the most expensive and most destructive natural disaster in U.S. history.