Ask the Chatbot Games & Quizzes History & Society Science & Tech Biographies Animals & Nature Geography & Travel Arts & Culture ProCon Money Videos
verifiedCite
While every effort has been made to follow citation style rules, there may be some discrepancies. Please refer to the appropriate style manual or other sources if you have any questions.
Select Citation Style

Why did Hurricane Katrina lead to widespread flooding?

Written and fact-checked by
The Editors of Encyclopaedia Britannica
Encyclopaedia Britannica's editors oversee subject areas in which they have extensive knowledge, whether from years of experience gained by working on that content or via study for an advanced degree....
The Editors of Encyclopaedia Britannica

After it made landfall in Louisiana on August 29, Hurricane Katrina produced widespread flooding in southeastern Louisiana because the levee system that held back the waters of Lake Pontchartrain and Lake Borgne was completely overwhelmed by 10 inches of rain and Katrina’s storm surge. An estimated 80 percent of New Orleans was underwater by August 30.