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Independent Levee Investigation Team Final Report

Investigation of the Performance of the New Orleans Flood Protection Systems in Hurricane Katrina on August 29, 2005

July 31, 2006

Volume I: Main Text and Executive Summary

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Cover, Table of Contents, and Executive Summary

Part I: Introduction

Chapter 1: Introduction and Overview

Part II: Technical Studies

Chapter 2: Overview of Hurricane Katrina and its Aftermath
Chapter 3: Geology of the New Orleans Region
Chapter 4: History of the New Orleans Flood Protection System
Chapter 5: The Lower Mississippi Region and Plaquemines Parish
Chapter 6: The St. Bernard Parish and Lower Ninth Ward Protected Area
Chapter 7: The New Orleans East Protected Area
Chapter 8: The Orleans East Bank (Downtown) and Canal District Protected Area
Chapter 9: Overtopping-Induced Erosion Studies
Chapter 10: Earthen Levee Evaluation
Chapter 11: Summary of Engineering Lessons

Part III: Organizational and Institutional Issues

Chapter 12: Organized for Failure
Chapter 13: Organized for Success
Chapter 14: Engineering for Success

Part IV: Summary and Findings

Chapter 15: Findings and Recommendations

Volume II: Appendices

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Cover and Table of Contents

Appendix A: Terrestrial LIDAR Imagery of New Orleans Levees Affected by Hurricane Katrina
Appendix B: Boring Logs
Appendix C: CPT Logs
Appendix D: STE Laboratory Testing
Appendix E: UC Berkeley Laboratory Testing and ILIT In-Situ Field Vane Shear Testing
Appendix F: Looking Back
Appendix G: Looking Forward
Appendix H: How Safe Is Safe? Coping with Mother Nature, Human Nature and Technology's Unintended Consequences
Appendix I: Erosion Test Results On New Orleans Levee Samples

Prior ILIT Publications

Draft Final Report (May 2006)

Preliminary Report (November 2005)

If you have questions or comments on the Independent Levee Investigation Team Final Report, please e-mail Rune Storesund at