Photos: Isaac Flooded New Orleans, Louisiana and Mississippi (August 30, 2012)

Sea birds surround the American Legion fishing pier in Bay St. Louis, Miss., as Isaac’s winds and storm surge flood some low laying neighborhoods, Wednesday, Aug. 29, 2012, the seventh anniversary of Hurricane Katrina hitting the Gulf Coast. Isaac was packing 80 mph winds, making it a Category 1 hurricane. It came ashore early Tuesday near the mouth of the Mississippi River, driving a wall of water nearly 11 feet high inland and soaking a neck of land that stretches into the Gulf. (AP Photo/Rogelio V. Solis)

Updated news on Isaac: ‘Photos: Isaac Causing Bad Flooding And Tornadoes (August 31, 2012)’.

Isaac came ashore late Tuesday as a Category 1 hurricane, with 80 mph winds near the mouth of the Mississippi River bringing along high winds, storm surges, and torrents of rain.

It drove a wall of water nearly 11 feet high inland.

By Wednesday mid afternoon, 19 hours after making landfall, Isaac had been downgraded to a tropical storm.

Anyway since Isaac moves very slowly, it is dumping more rain and together with the threat of storm surges it can cause more flooding in Louisiana.

Isaac that arrived exactly seven years after Hurricane Katrina did not make a direct hit on New Orleans.

It brings slashing rain and wind gusts up to 100 mph that buffeted New Orleans skyscrapers.

Chuck Cropp, center, his son Piers, left, and wife Liz, right, wade through floodwaters from Hurricane Isaac Wednesday, Aug. 29, 2012, in New Orleans. As Isaac made landfall, it was expected to dump as much as 20 inches of rain in several parts of Louisiana. (AP Photo/David J. Phillip)

A research student from the the University of Alabama measures wind speeds as Hurricane Isaac makes landfall, Wednesday, Aug. 29, 2012, in New Orleans, La. The storm stalled for several hours before resuming a slow trek inland, and forecasters said that was in keeping with the its erratic history. The slow motion over land means Isaac could be a major soaker, dumping up to 20 inches of rain in some areas. (AP Photo/Eric Gay)

In Plaquemines Parish, the storm pushed water over an 18-mile levee and put so much pressure on it that authorities planned to intentionally make a hole in the floodwall to relieve the strain.

Dozens of people were stranded in the flooded coastal areas and had to be rescued.

Plaquemines Parish ordered a mandatory evacuation for the west bank of the Mississippi below Belle Chasse because of worries about a storm surge.

West of New Orleans, Tropical Storm Isaac pushed water from lakes Pontchartrain and Maurepas into parts of LaPlace that caused flooding in St. John the Baptist Parish and victims were evacuated.

Tropical Storm Isaac, downgraded from a hurricane about 19 hours after making landfall, drove water over a levee in a lightly populated part of Plaquemines Parish. (Aug. 29) Associated Press.

Tropical Storm Isaac Leaves More Than 700K Without Power (ABC News)

Isaac’s winds and storm surge overcomes the seawall and floods Terrace Avenue in Waveland, Miss., Wednesday, Aug. 29, 2012, the seventh anniversary of Hurricane Katrina hitting the Gulf Coast. (AP Photo/Rogelio V. Solis)

Isaac’s winds and storm surge overcomes the seawall and floods the intersection of Nicholson Ave. and Beach Boulevard in Waveland, Miss., Wednesday, Aug. 29, 2012, the seventh anniversary of Hurricane Katrina hitting the Gulf Coast. (AP Photo/Rogelio V. Solis)

Pedestrians pass a fallen traffic light as Hurricane Isaac makes landfall, Wednesday, Aug. 29, 2012, in New Orleans, La. Isaac was packing 80 mph winds, making it a Category 1 hurricane. (AP Photo/Eric Gay)

A pedestrians passes a fallen news stand as Hurricane Isaac makes landfall, Wednesday, Aug. 29, 2012, in New Orleans, La. Isaac was packing 80 mph winds, making it a Category 1 hurricane. (AP Photo/Eric Gay)

Drug Enforcement Agency Special Agent Keith Billiot, left, Lanny LaFrance, center, and Sam Maltese, right, battle the wind and rain from Hurricane Isaac while riding in a rescue boat Wednesday, Aug. 29, 2012, in Braithwaite, La. Maltese and his family were rescued from their flooded home. (AP Photo/David J. Phillip)

A pedestrians passes a fallen news stand as Hurricane Isaac makes landfall, Wednesday, Aug. 29, 2012, in New Orleans, La. Isaac was packing 80 mph winds, making it a Category 1 hurricane. (AP Photo/Eric Gay)

Isaac’s winds and storm surge flood parts of Waveland, Miss., Wednesday, Aug. 29, 2012, the seventh anniversary of Hurricane Katrina hitting the Gulf Coast. (AP Photo/Rogelio V. Solis)

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