The Corps IPET team included a chronology of the levee failures in their final draft report. Eyewitness reports, video footage, stopped clock analysis and hydrographs recorded at various locations around the city provide evidence that the flooding started as early as 6:30 am:

• 17th Street Canal  630 first failure reported, 930 catastrophic failure
• London Avenue east and west between 700 and 930 catastrophic failure
• Industrial Canal  14' surge at 900, failure into Lower 9th at 730
• Lower St Bernard  800-830 from MrGO
• NO East 600 GIWW overtopped at Michoud, 800-900 Lake Pontchartrain
  

Eyewitness reports from the nearby Marina Towers condos said the 17th Street canal waters were barely over the earthen levee when the floodwall failed. LSU Hurricane Center researchers have modelled a harmonic oscillation that may have been setup in the canal by periodic storm driven waves. Others question the design of the levee foundation which was too short at only 17 feet below the surface. The Corps IPET team decided the I-Walls atop the levees deflected backward creating a crack that filled with water. This added more pressure unitl the levee was just shoved back. The levee failed and a crevasse formed on the Orleans side however later reports show the Jefferson side was approaching failure when the Orleans side gave way.

By 2pm City Hall confirmed the breach. By 4:30 pm mid-city was thoroughly flooded with waters chest high at the courthouse on Tulane and Broad. Mike Giambelluca, Principal of Jesuit High School reported later that flooding in the school on Carrollton and Banks reached the 5-6 foot level..

Treme, Bywater, Gentilly flooded, waters continuing to rise. At 5:17 a report arrived that the Chevron at I-10 and Franklin was under water.

Uptown stayed dry on Monday but this will change on Tuesday.