Hurricane Isaac Hits New Orleans, Gulf Coast

(Photo by Chris Graythen/Getty Images)

LAPLACE, LA - AUGUST 29: Rescue workers transport residents trapped by rising water from Hurricane Isaac in the River Forest subdivision on August 29, 2012 in LaPlace, Louisiana. The large Level 1 hurricane slowly moved across southeast Louisiana, dumping huge amounts of rain and knocking out power to Louisianans in scattered parts of the state. (Photo by Chris Graythen/Getty Images)

Hurricane Isaac Hits New Orleans, Gulf Coast

(Photo by Chris Graythen/Getty Images)

LAPLACE, LA - AUGUST 29: A car sits submerged in the flood waters of Hurricane Isaac in the River Forest subdivision on August 29, 2012 in LaPlace, Louisiana. The large Level 1 hurricane slowly moved across southeast Louisiana, dumping huge amounts of rain and knocking out power to Louisianans in scattered parts of the state. (Photo by Chris Graythen/Getty Images)

Hurricane Isaac Hits New Orleans, Gulf Coast

(Photo by Chris Graythen/Getty Images)

LAPLACE, LA - AUGUST 29: Rescue workers transport residents trapped by rising water from Hurricane Isaac in the River Forest subdivision on August 29, 2012 in LaPlace, Louisiana. The large Level 1 hurricane slowly moved across southeast Louisiana, dumping huge amounts of rain and knocking out power to Louisianans in scattered parts of the state. (Photo by Chris Graythen/Getty Images)

Hurricane Isaac Hits New Orleans, Gulf Coast

(Photo by Chris Graythen/Getty Images)

LAPLACE, LA - AUGUST 29: Rescue workers transport residents trapped by rising water from Hurricane Isaac in the River Forest subdivision on August 29, 2012 in LaPlace, Louisiana. The large Level 1 hurricane slowly moved across southeast Louisiana, dumping huge amounts of rain and knocking out power to Louisianans in scattered parts of the state. (Photo by Chris Graythen/Getty Images)

Hurricane Isaac Hits New Orleans, Gulf Coast

(Photo by Chris Graythen/Getty Images)

LAPLACE, LA - AUGUST 29: Rescue workers transport residents trapped by rising water from Hurricane Isaac in the River Forest subdivision on August 29, 2012 in LaPlace, Louisiana. The large Level 1 hurricane slowly moved across southeast Louisiana, dumping huge amounts of rain and knocking out power to Louisianans in scattered parts of the state. (Photo by Chris Graythen/Getty Images)

Hurricane Isaac Hits New Orleans, Gulf Coast

(Photo by Chris Graythen/Getty Images)

LAPLACE, LA - AUGUST 29: Rescue workers transport residents trapped by rising water from Hurricane Isaac in the River Forest subdivision on August 29, 2012 in LaPlace, Louisiana. The large Level 1 hurricane slowly moved across southeast Louisiana, dumping huge amounts of rain and knocking out power to Louisianans in scattered parts of the state. (Photo by Chris Graythen/Getty Images)

Hurricane Isaac Hits New Orleans, Gulf Coast

(Photo by John Moore/Getty Images)

PLAQUEMINES PARISH, LA - AUGUST 29: Flood evacuee Stacy Ford holds her dog Sugar while at a shelter set up in a YMCA on August 29, 2012 in Plaquemines Parish, Louisiana, the most heavily damaged by Hurricane Isaac. Her home in Mertle Grove had been flooded by four feet of water. The system, which was downgraded to a tropical storm by the National Weather Service, moved slowly across the state, dumping large amounts of rain and knocking out power to half a million Louisianans. (Photo by John Moore/Getty Images)

Hurricane Isaac Hits New Orleans, Gulf Coast

(Photo by John Moore/Getty Images)

NEW ORLEANS, LA - AUGUST 29: A stop sign stands askew after being blown by Hurricane Isaac on August 29, 2012 in New Orleans, Louisiana. The system, which was downgraded to a tropical storm by the National Weather Service, moved slowly across the state, dumping large amounts of rain and knocking out power to half a million Louisianans. (Photo by John Moore/Getty Images)

Hurricane Isaac Hits New Orleans, Gulf Coast

(Photo by Chris Graythen/Getty Images)

LAPLACE, LA - AUGUST 29: Henry Cox talks with residents stranded by the rising water during Hurricane Isaac in the River Forest subdivision on August 29, 2012 in LaPlace, Louisiana. The large Level 1 hurricane slowly moved across southeast Louisiana, dumping huge amounts of rain and knocking out power to Louisianans in scattered parts of the state. (Photo by Chris Graythen/Getty Images)

Hurricane Isaac Hits New Orleans, Gulf Coast

(Photo by John Moore/Getty Images)

PLAQUEMINES PARISH, LA - AUGUST 29: A family unpacks dinner at a shelter after being evacuated from their home on August 29, 2012 in Plaquemines Parish, Louisiana, the most heavily damaged by Hurricane Isaac. The system, which was downgraded to a tropical storm by the National Weather Service, moved slowly across the state, dumping large amounts of rain and knocking out power to half a million Louisianans. (Photo by John Moore/Getty Images)

Hurricane Isaac Hits New Orleans, Gulf Coast

(Photo by John Moore/Getty Images)

PLAQUEMINES PARISH, LA - AUGUST 29: Mike Easley holds his dogs Candy and Littlebit after being evacuated from his flooded home on August 29, 2012 in Plaquemines Parish, Louisiana. A levee had broken, flooding his town of Braithwaite in the parish, the most heavily damaged by the hurricane. The system, which was downgraded to a tropical storm by the National Weather Service, moved slowly across the state, dumping large amounts of rain and knocking out power to half a million Louisianans. (Photo by John Moore/Getty Images)

Hurricane Isaac Hits New Orleans, Gulf Coast

(Photo by Chris Graythen/Getty Images)

LAPLACE, LA - AUGUST 29: Lisa, Christopher and Leroy Smith sit in a boat after being pulled from the rising flood waters during Hurricane Isaac in the River Forest subdivision on August 29, 2012 in LaPlace, Louisiana. The large Level 1 hurricane slowly moved across southeast Louisiana, dumping huge amounts of rain and knocking out power to Louisianans in scattered parts of the state. (Photo by Chris Graythen/Getty Images)

Hurricane Isaac Hits New Orleans, Gulf Coast

(Photo by John Moore/Getty Images)

OAKVILLE, LA - AUGUST 29: Rising waters from Hurricane Isaac flood a neighborhood on August 29, 2012 in Oakville, in Plaquemines Parish, Louisiana. The parish, south of New Orleans, was the most heavily damaged by the hurricane. The system, which was downgraded to a tropical storm by the National Weather Service, moved slowly across the state, dumping large amounts of rain and knocking out power to half a million Louisianans. (Photo by John Moore/Getty Images)

Hurricane Isaac Hits New Orleans, Gulf Coast

(Photo by John Moore/Getty Images)

OAKVILLE, LA - AUGUST 29: Rising waters from Hurricane Isaac flood a neighborhood on August 29, 2012 in Oakville, in Plaquemines Parish, Louisiana. The parish, south of New Orleans, was the most heavily damaged by the hurricane. The system, which was downgraded to a tropical storm by the National Weather Service, moved slowly across the state, dumping large amounts of rain and knocking out power to half a million Louisianans. (Photo by John Moore/Getty Images)

Hurricane Isaac Hits New Orleans, Gulf Coast

(Photo by John Moore/Getty Images)

OAKVILLE, LA - AUGUST 29: Errol Ragas salvages blankets from his home as rising waters from Hurricane Isaac flood his neighborhood on August 29, 2012 in Oakville, in Plaquemines Parish, Louisiana. The parish, south of New Orleans, was the most heavily damaged by the hurricane. The system, which was downgraded to a tropical storm by the National Weather Service, moved slowly across the state, dumping large amounts of rain and knocking out power to half a million Louisianans. (Photo by John Moore/Getty Images)

Hurricane Isaac Hits New Orleans, Gulf Coast

(Photo by John Moore/Getty Images)

OAKVILLE, LA - AUGUST 29: Errol Ragas walks past a cemetery to recover dry blankets from his home as rising waters from Hurricane Isaac flood his neighborhood on August 29, 2012 in Oakville, in Plaquemines Parish, Louisiana. The parish, south of New Orleans, was the most heavily damaged by the hurricane. The system, which was downgraded to a tropical storm by the National Weather Service, moved slowly across the state, dumping large amounts of rain and knocking out power to half a million Louisianans. (Photo by John Moore/Getty Images)

Hurricane Isaac Hits New Orleans, Gulf Coast

(Photo by Mario Tama/Getty Images)

ARABI, LA - AUGUST 29: A tree toppled by Hurricane Isaac stretches across the roof of a food stand on August 29, 2012 in Arabi, Louisiana. The large Level 1 hurricane slowly moved across southeast Louisiana, dumping huge amounts of rain and knocking out power to Louisianans in scattered parts of the state. (Photo by Mario Tama/Getty Images)

US-WEATHER-STORM

(Photo credit should read FREDERIC J. BROWN/AFP/GettyImages)

Storm weary residents take refuge at a high school gymnasium in Belle Chasse, in low-lying Plaquemines Parish outside of New Orleans, on August 29, 2012 in Louisiana, where Hurricane Isaac has slowed to storm force but looks set to linger over southern Louisiana. Officials have urged residents to stay indoors and warned it would be at least a day before winds calmed enough for crews to try to repair downed power lines. (Photo credit should read FREDERIC J. BROWN/AFP/GettyImages)

US-WEATHER-STORM

(Photo credit should read FREDERIC J. BROWN/AFP/GettyImages)

Storm-weary residents take refuge at a high school auditorium in Belle Chasse, in low-lying Plaquemines Parish outside of New Orleans, on August 29, 2012 in Louisiana, where Hurricane Isaac has slowed to storm force but looks set to linger over southern Louisiana. Officials have urged residents to stay indoors and warned it would be at least a day before winds calmed enough for crews to try to repair downed power lines. (Photo credit should read FREDERIC J. BROWN/AFP/GettyImages)

Hurricane Isaac Hits New Orleans, Gulf Coast

(Photo by Mario Tama/Getty Images)

NEW ORLEANS, LA - AUGUST 29: A Lower Ninth Ward resident inspects a telephone pole that was toppled onto her home by Hurricane Isaac on August 29, 2012 in New Orleans, Louisiana. The large Level 1 hurricane slowly moved across southeast Louisiana, dumping huge amounts of rain and knocking out power to Louisianans in scattered parts of the state. (Photo by Mario Tama/Getty Images)

Hurricane Isaac Hits New Orleans, Gulf Coast

(Photo by Mario Tama/Getty Images)

BRAITHWAITE, LA - AUGUST 29: A street sign lies near floodwaters during Hurricane Isaac on August 29, 2012 in Braithwaite, Louisiana. Dozens were reportedly rescued in the area after levees were overtopped by floodwaters from Hurricane Isaac. (Photo by Mario Tama/Getty Images)

US-WEATHER-STORM

(Photo credit should read FREDERIC J. BROWN/AFP/GettyImages)

A fallen streetlight sits in a puddle of water in downtown New Orleans, Louisiana on August 29, 2012, as Hurricane Isaac battered the city and surrounding region, flooding homes and driving stormy waters over the top of at least one levee, seven years to the day after Katrina devastated the city. Packing vicious winds of 80 miles (130 kilometers) per hour and rolling slowly over Louisiana, Isaac has dumped huge quantities of rain on the renowned US jazz city as residents cowered in their homes. (Photo credit should read FREDERIC J. BROWN/AFP/GettyImages)

US-WEATHER-STORM

(Photo credit should read FREDERIC J. BROWN/AFP/GettyImages)

An uprooted and fallen tree is positioned in front of a house blocking a road in New Orleans, Louisiana on August 29, 2012, as Hurricane Isaac battered the city and surrounding region, flooding homes and driving stormy waters over the top of at least one levee, seven years to the day after Katrina devastated the city. Packing vicious winds of 80 miles (130 kilometers) per hour and rolling slowly over Louisiana, Isaac has dumped huge quantities of rain on the renowned US jazz city as residents cowered in their homes. (Photo credit should read FREDERIC J. BROWN/AFP/GettyImages)

US-WEATHER-STORM

(Photo credit should read FREDERIC J. BROWN/AFP/GettyImages)

A fallen tree is positioned in front of a house in New Orleans , Louisiana on August 29, 2012, as Hurricane Isaac battered the city and surrounding region, flooding homes and driving stormy waters over the top of at least one levee, seven years to the day after Katrina devastated the city. Packing vicious winds of 80 miles (130 kilometers) per hour and rolling slowly over Louisiana, Isaac has dumped huge quantities of rain on the renowned US jazz city as residents cowered in their homes. (Photo credit should read FREDERIC J. BROWN/AFP/GettyImages)

Hurricane Isaac Hits New Orleans, Gulf Coast

(Photo by Mario Tama/Getty Images)

NEW ORLEANS, LA - AUGUST 29: A tree is blown over outside Tulane Medical Center during the rains from Hurricane Isaac on August 29, 2012 in New Orleans, Louisiana. The Category 1 hurricane is slowly moving across southeast Louisiana, dumping large amounts of rain and knocking out power to Louisianans in scattered parts of the state. (Photo by Mario Tama/Getty Images)

Hurricane Isaac Hits New Orleans, Gulf Coast

(Photo by Chris Graythen/Getty Images)

NEW ORLEANS, LA - AUGUST 29: A car drives down Canal Street during Hurricane Isaac on August 29, 2012 in New Orleans, Louisiana. The Category 1 hurricane is slowly moving across southeast Louisiana, dumping large amounts of rain and knocking out power to Louisianans in scattered parts of the state. (Photo by Chris Graythen/Getty Images)

Hurricane Isaac Hits New Orleans, Gulf Coast

(Photo by Mario Tama/Getty Images)

NEW ORLEANS, LA - AUGUST 29: A downed streetlight lies in the rain from Hurricane Isaac in the Central Business District on August 29, 2012 in New Orleans, Louisiana. The large Level 1 hurricane is slowly moving across southeast Louisiana, dumping large amounts of rain and knocking out power to Louisianans in scattered parts of the state. (Photo by Mario Tama/Getty Images)

US-WEATHER-STORM

(Photo credit should read FREDERIC J. BROWN/AFP/GettyImages)

A fallen tree blocks all the lanes along a downtown road in New Orleans on August 29, 2012 in Louisiana, where Hurricane Isaac has slowed to storm force but looks set to linger over southern Louisiana. Officials have urged residents to stay indoors and warned it would be at least a day before winds calmed enough for crews to try to repair downed power lines. (Photo credit should read FREDERIC J. BROWN/AFP/GettyImages)