Melanie and Philip Martinez Sr. have dinner in daughter Kala's one-bedroom apartment on Saturday, September 8, in Chalmette, Louisiana. Melanie, along with her husband and mother, are staying in Kala's apartment after their home in Braithwaite flooded during Hurricane Isaac. It was the fifth home Martinez has lost to hurricanes in Louisiana.
Melanie Martinez, center, waits in line to apply for disaster food assistance in Mereaux, Louisiana.
On Friday, September 7, Gina Hunter walks past the front porch of her home, which washed onto a levee in Plaquemines Parish in Braithwaite, Louisiana. "I never expected to have the levee as my backyard," Hunter says. Louisiana officials estimate at least 13,000 homes were damaged by Hurricane Isaac.
Mud coats the kitchen of the flooded Mary Plantation House, the oldest structure in Louisiana's Plaquemines Parish, on Thursday, September 6. At least 13,000 homes were damaged throughout Louisiana after Hurricane Isaac came ashore last week, a state official estimates.
Marie Hauser picks up her mail outside her flooded house Thursday in LaPlace, Louisiana.
Blake Miller, right, and Mike Atkins check out the grounds of the Mary Plantation House on Thursday.
Floodwaters linger Thursday in Braithwaite, Louisiana.
Worker Holly Rochelle sorts a resident's laundry, washed for free at the Tide Loads of Hope mobile laundromat set up for those affected by Isaac, on Thursday in LaPlace.
A paper hand fan sits caked in mud from flooding at Bethlehem Baptist Church in Plaquemines Parish on Wednesday, September 5.
An insurance inspector tours the damaged Bethlehem Baptist Church on Tuesday.
Richard Williams of the Braithwaite neighborhood in Plaquemines Parish, Louisiana, trudges through a debris field pulling a boat filled with things from his flooded home on Wednesday. Hurricane Isaac inundated his two-story home.
Fred Leslie is helped into a boat by Jesse Shaffer after he and his half-brother made their way to the house to retrieve items on Wednesday. The Braithwaite neighborhood is still under four feet of water eight days after Hurricane Isaac hit.
Ruth Bernard feeds ice to Micah Faciane to stay cool as they wait in line to apply for disaster food assistance on Wednesday in Westwego, Louisiana. Hundreds affected by Hurricane Isaac waited hours in the heat to apply for the Disaster Supplemental Nutrition Assistance Program.
Residents wait in line to apply for disaster food assistance on Wednesday in Westwego, Louisiana.
Louis Lipps tries to salvage belongings near his house on Lake Pontchartrain in LaPlace, Louisiana, on Tuesday, September 4. Many residents returning to their homes in southern Louisiana after Hurricane Isaac will find little comfort. Authorities have blamed eight U.S. deaths on Isaac, six of them in Louisiana, after it made landfall last week as a Category 1 hurricane.
Royal Ann Moll stands in the doorway of her home in Jean Lafitte, Louisiana, as friend Tilden Perez Jr. tries to spray away mud from the front yard Tuesday. Perez and his wife rode out the storm in Moll's house, which took on about 11 inches of water.
Joe Chianelli Jr. retrieves a gas tank Tuesday that washed onto a levee in Plaquemines Parish in Braithwaite, Louisiana, during the storm.
Utility crews work to restore electricity Tuesday in Harvey, Louisiana.
Returning residents wait in line Tuesday for a ferry in Plaquemines Parish.
A wounded horse recovers Tuesday in Poydras, Louisiana, after being rescued when it got stuck in mud from storm flooding.
A home washed away from its foundation sits on a roadside Tuesday in Braithwaite in Plaquemines Parish.
Melanie Martinez holds the family cat, now renamed Isaac, after salvaging items from her family's flooded home in Braithwaite on Monday, September 3. Martinez, along with her husband and her mother, was forced to ride out the storm in their Plaquemines Parish home when their car broke down.
Melanie Martinez walks through the front yard Monday as family members salvage items from their flooded home in Braithwaite, Louisiana.
Melanie Martinez, left, and family members salvage items from their flooded home Monday.
A coffin lies on the side of a levee Monday in Braithwaite, Louisiana, washed up by floodwaters from Hurricane Isaac.
Eric DeSalvo salvages a gun Monday from the flooded Martinez home in Braithwaite, Louisiana.
Melanie Martinez, center, and Kala Martinez salvage items from their flooded home on Monday.
Workers repair the roof of a home as downed power lines caused by Hurricane Isaac lean onto a tree in lower Plaquemines Parish on Sunday, September 2.
A Paradise Lane street sign is partially submerged in Isaac's floodwaters in Braithwaite, Louisiana, on Saturday, September 1.
A damaged structure rests atop a partially submerged truck in Braithwaite, Louisiana.
Russell Wilson, center, helps to move a water-damaged Drew Brees jersey from his daughter's home in Braithwaite.
Plaquemines Parish resident Angela Serpas reacts after seeing her flooded home for the first time following Hurricane Isaac, as her daughter Lainy takes pictures, in Braithwaite, Louisiana, on Saturday, September 1.
The Walker family leaves their home after an abandoned house next door collapsed onto theirs during Tropical Storm Isaac on Friday, August 31. The Red Cross was assisting the family in finding a place to stay.
Cattle are stuck in a mixture of mud and debris washed in by Isaac's storm surge. Officials are attempting to conduct a roundup in Plaquemines to save about 200 cattle stranded by the storm.
Local residents serve up chicken etouffee and rice delivered by the Louisiana National Guard at JJ's Bar in the Bywater neighborhood of New Orleans. The military gave out the food to residents of the area, which was still without electricity three days after Hurricane Isaac knocked out power to hundreds of thousands of people.
Local residents drink by candlelight at JJ's bar during the continued blackout.
Oil containers and railroad cars sit in Isaac's flood waters in Braithwaite, Louisiana.
Republican presidential candidate Mitt Romney talks with a man on the side of the road while on an unscheduled tour of a neighorhood damaged by Isaac on Friday, August 31, in Lafitte, Louisiana.
A family carries bags of ice and boxes of food from an aid distribution center for victims of Isaac in New Orleans. The center was one of three in the city operated by the military, offering handouts to residents, many of whom still have no electricity due to the storm.
Residents look out from their residence surrounded by water as the motorcade of Romney passes during a tour of damage from Isaac in Lafitte.
Flood waters from Tropical Storm Isaac swamp homes in Braithwaite, Louisiana, on Friday, August 31, 2012.
Vivian Lane, 5, helps her mother, Ashley Lane, make rice and gravy on their porch after Hurricane Isaac knocked out their power in Bay Saint Louis, Mississippi, Friday.
Tombstones washed from their resting place by flood waters from a levee breach in Braithwaite, Louisiana, on Friday.
The ship Arosa Basel sits grounded on the east bank of the Mississippi River in Plaquemines Parish, Louisiana, Friday.
Dead nutria lie on the shore near Waveland, Mississippi, on Friday.
A truck, partially submerged by a levee breach, gives off a sheen of oil and fuel in Braithwaite, Louisiana, on Friday.
Members of the Louisiana Army National Guard and Louisiana Air National Guard distribute water, MREs and ice at Skelly-Rupp Stadium in New Orleans on Friday.
Jewel Rico and her dog Chico are rescued from flood waters from Isaac on Thursday, August 30, in Reserve, Louisiana.
Darrell Hill, 11, feeds his sister Floy Dillon, 2, at a flood shelter set up in a high school gym.
People get off a Slidell Police Department SWAT vehicle after being rescued from flooding from Isaac's storm surge on the north shore of Lake Pontchartrain.
Residents sit on a bus Thursday after evacuating Laplace, Louisiana.
A heavy band of storms hovers ominously over New Orleans in the aftermath of Isaac on Thursday.
Two men paddle a boat with street signs in flood waters from Hurricane Isaac in Reserve, Louisiana.
Subdivisions in LaPlace, west of U.S. 51 and south of Interstate-10 are covered in floodwaters in the aftermath of Isaac.
The Lake Borgne Basin Levee District and other government agencies intentionally breached the Caernarvon Diversion to help drain flood waters in Plaquemines Parish, Louisiana.
A woman is stranded with her truck in floodwaters from Isaac on the north shore of Lake Pontchartrain on Thursday in Slidell, Louisiana.
Brittany Trumbaturi, right, prepares to leave her flooded home with family member Joshua Barbot, center, who came to rescue family members in a boat. Officials warned of continued threats from storm surges and flooding as Isaac moved inland.
Jamaal Nelson carries his son, Jon-Wesley, 6, on his back and his 4-month-old baby daughter, Jalashia, while being evacuated from their flooded neighborhood in Slidell.
Residents stand in front of their home as flooded streets engulf their neighborhood in Slidell.
Elderly residents evacuate to a shelter in Slidell
A resident evacuates an area flooded by Hurricane Isaac's storm surge on the north shore of Lake Pontchartrain.
Residents evacuate their flooded neighborhood.
A man drives an off-road vehicle through flooded streets in Slidell.
Residents carry pillows, blankets and fuel containers past a flood berm while evacuating an area of rising floodwaters on Thursday in Slidell.
An elderly resident is rescued from her home in Slidell.
Residents run down a road in Slidell clutching their belongings as they evacuate an area of rising floodwaters from Isaac's rains.
Rescue workers transport residents trapped by rising water from Isaac in Laplace, Louisiana, on Wednesday.
Water surrounds a home on the Jourdan River in Kiln, Mississippi, as Isaac moves through the area.
Residents are rescued Wednesday in Laplace, about 25 miles northwest of New Orleans, where the storm surge was unusually bad.
Henry Cox talks with stranded residents in Laplace.
Errol Ragas walks past a cemetery to recover dry blankets from his home as rising waters flood in Oakville, Louisiana. Plaquemines Parish, south of New Orleans, was the area most heavily damaged by the hurricane.
Storm-weary residents take refuge at a high school gymnasium in Belle Chasse, a low-lying area outside of New Orleans.
St. John Parish Sherriff officials rescue local residents from the flood waters in Laplace.
Lisa, Christopher and Leroy Smith sit in a boat after being pulled from the flood waters.
A stop sign stands askew in New Orleans after being blown by Isaac.
People gather at a bar in the French Quarter during ongoing rain from Isaac. The area appeared largely unscathed by the storm.
A house in New Orleans collapsed during the height of Hurricane Isaac, destroying three vehicles parked alongside it Wednesday.
Waves from Hurricane Isaac pummel Ken Combs Pier in Gulfport, Mississippi.
A street sign turned upside down, likely the result of bricks falling overnight from a building along the deserted streets of New Orleans.
A car sits submerged in Laplace, Louisiana.
People gather beneath an awning for an impromptu cookout at a bar that lost electricity during Hurricane Isaac in New Orleans.
Emergency crews and residents rescue a dog during Hurricane Isaac on Highway 39 separating Plaquemines and St. Bernard parishes on Wednesday, August 29, in Louisiana.
First responders carry people across the top of the levee from Plaquemines Parish to St. Bernard Parish.
Mark Savoie cleans Espanade Avenue in New Orleans of tree debris to help the area near Burgundy drain as Isaac slowly moves inland.
A worker in the driving rain tries to clear fallen limbs in the riverbound lanes of Espanade Avenue near McDonogh High School in New Orleans.
Winds from Isaac knocked down tree branches in Kenner, Louisiana.
A child and an adult share a folding bed as storm-weary residents take refuge at a high school gymnasium in Belle Chasse, in low-lying Plaquemines Parish, outside of New Orleans.
A tree toppled by Isaac stretches across the roof of a food stand in Arabi, Louisiana.
A tree blown over from Hurricane Isaac lies atop a cemetery tomb in Plaquemines Parish.
A street sign lies near floodwaters fromIsaac on Wednesday, in Braithwaite, Louisiana. Dozens were reportedly rescued in the area after levees were overtopped by floodwaters from Hurricane Isaac.
A rescue boat passes a partially submerged stop sign.
A car drives down Canal Street on Wednesday. The storm is slowly moving across southeast Louisiana, dumping large amounts of rain and knocking out power in scattered parts of the state.
A traffic light continues to glow after being downed by Isaac's winds.
A fallen tree blocks a road in New Orleans as Isaac batters the city and surrounding region, flooding homes and driving stormy waters over the top of at least one levee.
Dozens were reportedly rescued in Plaquemines Parish after levees were overtopped by floodwaters.
John Stone of Bay St. Louis, Mississippi, and his dog are led out of the water by a member of the Swift Water Rescue Team after being rescued from his flooded house.
A tree was pushed over outside Tulane Medical Center in New Orleans.
People rest in a rescue truck atop a levee in Plaquemines Parish.
Rescue workers survey the floodwaters from a levee in Braithwaite.
Police officers stand watch in the French Quarter.
Isaac pounds Gulf CoastA traffic light dangles at an intersection in Metairie, Louisiana, during strong wind and rain as Hurricane Isaac pushes ashore.
A tree toppled by hurricane-force winds lies on power lines near a home in New Orleans.
A storm surge causes water to quickly rise while waves pound the concrete seawall along the shores of Lake Pontchartrain in New Orleans on Tuesday, August 28.
Scott Burley runs from crashing surf on the Ken Combs Pier in Gulfport, Mississippi.
Jason Preston closes shutters on a home in Gulfport, Mississippi, as Hurricane Isaac approaches.
Emily Schneider leans against a pole to support herself against strong winds while visiting the banks of Lake Pontchartrain in New Orleans, where Hurricane Isaac has made landfall.
Water rises from a bayou, flooding properties ahead of the arrival of Hurricane Isaac in Bay St. Louis, Mississippi.
Bridgette Mooney, her husband Kevin, and their 15-month-old daughter Skyler watch from their home as Hurricane Isaac lashes their property with rain in Kiln, Mississippi.
Employees of the Orleans Levee District remove signs from Lake Shore Drive near the shore of Lake Pontchartrain.
Evan Stoudt faces strong winds from the banks of Lake Pontchartrain.
A man walks on Canal Street in New Orleans.
Joshua Keegan and Ruffin Henry swim at Lake Pontchartrain.
High surf splashes along Highway 193 north of the Dauphin Island Bridge in Alabama.
Waves from Hurricane Isaac smash against a warning sign at a flooded beach in Biloxi, Mississippi.
A group of men sit on a bench at the edge of Lake Pontchartrain as Hurricane Isaac approaches.
Matthew Pettus holds a sheet open in the wind on the levee near Lake Pontchartrain.
People make their way across Canal Street in New Orleans.
Joshua Keegan and his dog Scout swim in the rising water of Lake Pontchartrain.
A Mississippi Department of Transportation sign in Hattiesburg warns southbound motorists on U.S. 49 of rough weather conditions on Tuesday, August 28. Hurricane Isaac is expected to drop heavy rain on the Mississippi Coast over the next couple of days.
A woman and her dog watch the waves produced by Hurricane Isaac on the shore of Lake Pontchatrain in New Orleans on Tuesday. Hurricane Isaac is expected to make landfall later tonight along the Louisiana coast.
Louisiana Gov. Bobby Jindal and New Orleans Mayor Mitch Landrieu receive an update on the status of the pumping station at the 17th Street Canal in Metairie, Louisiana.
A couple takes photos in Bay St. Louis, Mississippi. Many residents of the area decided to stay in their homes instead of evacuating.
A man skateboards past a bar with boarded windows in the French Quarter in New Orleans.
Diana Whipple of New Orleans watches waves crash on the shore of Lake Pontchartrain as Hurricane Isaac approaches Tuesday. Isaac became a Category 1 hurricane Tuesday when its maximum sustained winds reached 75 mph, the National Hurricane Center says.
Workers try to close off state Highway 23 South in Oakville, Louisiana, on Tueday as Issac heads toward the coast.
Gallery Nine Forty in New Orleans' French Quarter notifies customers it's "on Hurrication."
Workers board up a business on Bourbon Street in the French Quarter as Isaac approaches Tuesday.
Hydraulic pumps are prepared at the 17th Street Canal floodwall Tuesday in New Orleans.
A woman enjoys the a heavy rain in the Tampa, Florida, area, on Monday. Hurricane Isaac is expected to make landfall near New Orleans.
Mounted law enforcement officials wait out a brief rainstorm during the National Republican Convention. Commercial bus cancellations caused by Isaac prevented many of the expected demonstrators from being present.
A sign in the French Quarter makes fun of Hurricane Isaac.
Workers place plywood on the windows of the Royal Sonesta Hotel on Bourbon Street.
Aimo Ny rests on her cot in the hurricane shelter at the Belle Chasse Auditorium on Monday in Belle Chasse, Louisiana.
iReporter Liz Yavinsky snapped this picture of a boy floating down a flooded street in West Palm Beach, Florida, on Monday.
The manager of a shoe store in Harvey, Louisiana, places plywood over the windows in preparation of Hurricane Isaac.
A crew from Jefferson Parish Drainage Department places large sandbags near a canal and pond in Jean Lafitte, Louisiana, on Monday in preparation for Isaac.
A St. Petersburg, Florida, resident walks along the sea wall at Spa Beach, where larger than average waves were being kicked up by Tropical Storm Isaac on Monday.
Oliver Marti sweeps water from heavy rains generated by Tropical Storm Isaac off the roof of his flower shop on Monday in Tampa, Florida.
Waves batter the coast in Havana, Cuba, on Sunday after Tropical Storm Isaac passed the island.
Larry Hoffmeister, left, and Charles Carter place storm shutters on Carter's vacation home on Dauphin Island, Alabama, as they prepare for Isaac on Sunday.
Justin and Kayla Franklin of Tennessee walk in wind and rain in downtown Key West as Tropical Storm Isaac moves over the island.
Biloxi, Mississippi, resident Stephanie Dale fills out paperwork Sunday to have her dog microchipped at the Humane Society of South Mississippi, which opened its doors to provide an emergency microchip and tag clinic.
Ocean Springs, Mississippi, resident Charles Bartlett fills several gas containers in preparation for Isaac.
Andrew Marino, left, and Colby Collier pull a wagon filled with sandbags back to their homes as Florida residents prepared for Tropical Storm Isaac in St. Pete Beach, Florida, on Sunday.
Palm trees blow in the wind in front of the Tampa Bay Times Forum, where the start of the Republican National Convention was pushed to Tuesday.
Earl, right, and Terri Harris place sandbags around their home to prepare for possible flooding.
People venture out into the stormy weather as Tropical Storm Isaac passed by Marathon, Florida, on Sunday.
A couple watch as waves and strong winds from Tropical Storm Isaac, which crossed Cuba on Sunday, batter the shore in Gibara, Cuba, on Saturday.
Strong winds bend palm trees in Cuba's northern province of Sancti Spiritus on Saturday. Isaac is expected to strengthen and become a Category 1 hurricane by early Monday as it draws nearer to Florida.
A man captures the effects of Tropical Storm Isaac in Gibara.
People watch from the shore as waves pound the coast in Gibara.
Officials reported some storm surge and flooding in eastern Cuba.
Tampa, Florida, area residents make preparations for the arrival of Tropical Storm Isaac by filling sandbags at a Hillsborough County Public Works Service Center on Saturday.
A woman sits atop sandbags filled by Tampa area residents in preparation for the storm.
A Florida Keys resident boards up the windows of a store on Duval Street in Key West after a hurricane warning was issued ahead of Tropical Storm Isaac.
Two men install storm shutters on Duval Street on Saturday.
Vehicles cross a bridge leaving the Lower Keys on Saturday as the storm strengthens and moves closer.
Isaac's trail of destruction
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Isaac pounds Gulf Coast
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STORY HIGHLIGHTS
- iReporter describes how a floodgate spared her neighborhood
- Thousands being rescued in St. John's Parish
- Arrests made in 12 looting incidents
- Utility warns customers to prepare for extended power outages
Have you been affected by Isaac? Share your photos here.
(CNN) -- Louisiana and Mississippi officials conducted search-and-rescue missions Wednesday for residents stranded by slow-moving Tropical Storm Isaac, which flooded homes and pushed water over the top of several levees.
While Isaac lost its hurricane status Wednesday afternoon, officials warned of continued life-threatening hazards from storm surges and local flooding.
The surge was unusually bad in LaPlace, about 25 miles northwest of New Orleans, where many people had been rescued or still needed to escape rapidly rising water, said Paige Falgoust, communications director for St. John the Baptist Parish.
"We have established pickup points in certain subdivisions that are easy access for our residents to get to by foot," she said.
People were being taken to a processing center at a church then bused to state shelters outside the parish.
The storm surge from Lake Ponchartrain came quickly and "in a different way from what we were expecting," Falgoust said.
"In some areas the water levels rose in 10 minutes to where they could not get out of their homes," she said.
According to a release from Louisiana Gov. Bobby Jindal's office, 1,500 people had been evacuated with 1,500 more needing rescue. The state sent 89 buses to take evacuees to shelters.
The situation also was particularly dire in Plaquemines Parish, southeast of New Orleans, where 3,000 people remained in one area close to an 8-foot tall levee that waters are threatening, the governor's office said.
Earlier Jindal said a first estimate from local officials in the parish showed as many as 800 homes may have received significant water damage. The U.S. Army Corps of Engineers reported significant storm surge in the parish, scene of many rescues.
Storm tracker
One involved National Guard troops who moved 112 residents from the Riverbend nursing home to another facility.
Dozens of Louisiana families that had ignored mandatory evacuation orders in a low-lying area retreated to their attics and roofs and sought rescue amid the howling wind and pounding rain.
CNN iReporter Kayla Robin, who took photos of the Braithwaite flooding and rescue arrivals, said the experience was horrific.
"When they got in, you could tell they were in shock and weren't expecting this," she told CNN.
Robin, 20, lives in Caernarvon in St. Bernard Parish, right next to Braithwaite. She lives to the east of a floodgate that protected St. Bernard from the floodwater.
Robin said there was no water in her home, although there was calf-high water in the streets.
"It was traumatic going to the wall and seeing both sides at one time," said Robin of the contrasting situations. "Thankfully, we have everything -- but these people (on the other side) are reliving Katrina seven years later."
Isaac storm surge creeps up to house
Nungesser: Wind prevents Isaac rescues
New Orleans native rides out Isaac
Meanwhile, officials said there were 12 incidents of looting. New Orleans Police said arrests were made in each case, but didn't specify how many people were involved.
Mississippi Gov. Phil Bryant said Wednesday that 34 people were rescued by boat in Hancock County, on the coast northeast of New Orleans, and 15 others were picked up by National Guard troops in trucks. CNN affiliate WWL reported major flooding in LaPlace, west of New Orleans.
How to help, as Isaac pounds the Gulf Coast
Isaac threatened to keep churning over the region for another day.
The punishing storm conditions will persist "all day today, into tonight, into tomorrow," said Richard Knabb, director of the National Hurricane Center.
The region's largest power provider, meanwhile, told customers to prepare for "extended power outages." Overall, power companies said more than 834,000 customers were without power in Louisiana, Mississippi, Alabama, Florida, Texas and Arkansas. More than three-fourths of the outages were in Louisiana.
Sixty road segments in Louisiana were closed as of Wednesday afternoon, officials said, including the Lake Pontchartrain Causeway.
"We are trying to keep priority routes open as much as safely possible," said spokeswoman Amber Leach of the Louisiana Department of Transportation and Development.
As of 10 p.m. CT, Isaac's maximum sustained winds were at 60 mph.
The storm's center was about 15 miles south of Baton Rouge with tropical storm winds blowing as far as 175 miles from the eyewall, the hurricane agency said. Police officers said the city will be under a dusk-to-dawn curfew beginning Wednesday evening.
Isaac was creeping to the northwest at only 6 mph, giving it a long time to inflict damage. Forecasters said the storm should weaken and become a tropical depression Thursday.
Jindal said there was a report of a fatality in a fire early Wednesday, but officials had not confirmed the report.
Officials were quick to emphasize that the huge federal investments in recent years to avoid a repeat of Hurricane Katrina's horror had worked in New Orleans.
"The system that the country invested in is absolutely paying off," said Louisiana Sen. Mary Landrieu.
"There is no evidence of any (water) overtopping (canals)" in the city, said the senator's brother, New Orleans Mayor Mitch Landrieu. "We have full confidence the levees will hold."
But in Plaquemines Parish, at least four levees overtopped, creating a kind of flooding the parish did not see even during Hurricane Katrina, which hit seven years ago Wednesday.
Hurricane safety: When the lights go out
"It's very unfortunate that people did not heed the warnings," Mary Landrieu told CNN, adding, "our hearts go out" to them.
"Now the Coast Guard's got to go out with winds still gusting 60 to 70 mph in some areas" to save them, she said.
The New Orleans levee system and pump stations were working furiously to deal with the deluge.
Honoré: 'Hunker down and stay off roads'
Hurricane trackers take on Isaac
Hurricane Isaac causing heavy rainfall
Hurricane Isaac's wall of water
The system was rebuilt and reinforced at a cost of $14 billion after it failed when Katrina struck in 2005. Nearly 1,800 people died as a result of that storm, the majority when levees and flood walls failed and flooded.
Officials were considering intentionally breaching the levee downstream to allow some of the floodwater to flow back out of the inundated area, Jindal said.
Nungesser said parish officials will go out at low tide to check the back levee -- a second line of defense -- at Braithwaite and determine where to punch holes in it. It will be Saturday, at the earliest, before crews can cut the levee open, letting water flow out into the marsh.
According to The Times-Picayune, the digging might begin Thursday. Garret Graves, chair of the Coastal Protection and Restoration Authority, told the paper that the state had agreed to the plan to start digging as soon as conditions allow.
Earlier, Nungesser said his parish will need federal funds to rebuild. But first the searches continued.
"We are still looking for stranded residents," he said Wednesday evening. "We will resume a double check tomorrow on the homes on the east bank (of the Mississippi River). We're checking the west bank for anyone who may have been trapped."
Parish resident Gene Oddo told WWL that he was in his attic with his wife and 18-month-old baby girl.
He said the water was above his front door, and he did not expect it to reach the attic. But if it does, "I'm gonna have to shoot a hole in the attic to get up here on the roof."
His neighbors, including a 92-year-old man who refused to leave his home, were in a similar predicament, he said.
"People who went through Katrina are pretty nervous about storms, and large numbers of people have left," Lynn Magnuson, 58, said Tuesday in a CNN iReport.
Magnuson said the Lower 9th Ward, which was hard hit by Katrina, "is pretty empty right now."
About 1,000 National Guard troops and more than 2,900 law enforcement officers are in the city ready to address issues related to the storm, Mayor Landrieu said.
Isaac made its second landfall at about 2 a.m. CT near Port Fourchon, in southeast Louisiana 60 miles southeast of New Orleans, after slamming first into Plaquemines Parish along the coast and then wobbling back over the water near the mouth of the Mississippi River, the National Hurricane Center said in an early morning update.
In Biloxi, Mississippi, 50-year-old Alfonso Walker was keeping a close eye on the progress of the 195-mile-wide storm.
He watched as a storm surge sent waves crashing over the pier at the IP Biloxi Hotel & Casino.
"I went through Hurricane Camille in 1969 and Hurricane Katrina in 2005, where I lost everything, and every other hurricane in between those two that came through," he said in a CNN iReport.
"So I'm a little concerned."
Isaac could bring 14 inches of rain across the region, and as much as 25 inches in some areas, including parts of Louisiana, Mississippi and Alabama, the hurricane center had predicted.
The center of the storm "will move farther inland over Louisiana tonight and tomorrow, and move over southern Arkansas Thursday night or early Friday," the hurricane center said.
Isaac, which was a tropical storm last week in the Atlantic Ocean, killed nearly two dozen people in Haiti and the Dominican Republic before starting its journey across the Gulf of Mexico.
On Tuesday, Isaac made landfall as a Category 1 hurricane.
Links, tips and resources for battling the storm
CNN's Brian Todd, Soledad O'Brien, Ed Lavandera, Martin Savidge, John Zarrella, Chandler Friedman, Steve Almasy, Joe Sterling, Anika Chin, Greg Botelho, Mike Ahlers, Aaron Cooper and Ed Payne contributed to this report.