<P> By August 31 , eighty percent ( 80 % ) of the city of New Orleans was flooded by Hurricane Katrina , with some parts of the city under 20 feet ( 6.1 m ) , of water . Over 50 breaches in region 's levee system were catalogued , five of which resulted in massive flooding of New Orleans . The 17th Street Canal levee was just south of the Hammond Highway Bridge . Levees adjacent to London Avenue breached in two locations : one near Robert E. Lee Boulevard and one between Filmore Avenue and Mirabeau Avenue . Two breaches also occurred in the Industrial Canal adjacent to Surekote Road . Levee repair efforts were undertaken , involving reinforcing the levees with 3,000 pounds ( 1,400 kg ) sandbags deployed by U.S. Army Chinook and Black Hawk helicopters . The 17th Street Canal levee repair was completed by September 5 , 2005 and subsequently , the three canals were repaired all the way to Lake Pontchartrain . The Army Corps of Engineers added flood gates to the three canals . </P>
<P> By August 31 , eighty percent ( 80 % ) of the city of New Orleans was flooded by Hurricane Katrina , with some parts of the city under 20 feet ( 6.1 m ) , of water . Over 50 breaches in region 's levee system were catalogued , five of which resulted in massive flooding of New Orleans . The 17th Street Canal levee was just south of the Hammond Highway Bridge . Levees adjacent to London Avenue breached in two locations : one near Robert E. Lee Boulevard and one between Filmore Avenue and Mirabeau Avenue . Two breaches also occurred in the Industrial Canal adjacent to Surekote Road . Levee repair efforts were undertaken , involving reinforcing the levees with 3,000 pounds ( 1,400 kg ) sandbags deployed by U.S. Army Chinook and Black Hawk helicopters . The 17th Street Canal levee repair was completed by September 5 , 2005 and subsequently , the three canals were repaired all the way to Lake Pontchartrain . The Army Corps of Engineers added flood gates to the three canals . </P>
where did katrina hit the hardest in new orleans
where did katrina hit the hardest in new orleans
the city of New Orleans
the city of New Orleans