According to Bush Adviser Acknowledges Lack of Preparation for Katrina, on the night of Monday August 29, Marty Bahamonde reported to Michael Brown that "he had observed a massive break on the Lake Pontchartrain levee [the 17th Avenue Canal levee] and flooding over 80 percent of the city". Brown told Bahamonde that he would call the White House, but Chertoff denies that Brown told him that.
"The tenor of his discussions on Monday . . . was, this was bad, but it could have been worse," Chertoff said in an interview, adding that he learned of Bahamonde's report only after meeting him personally days later. "There was not a report to me until the following morning that there was a significant breach of the 17th Street levee."