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)

Related post:

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2. Photos: Hurricane Isaac Hits Southeast Louisiana

3. Hurricane Warnings For New Orleans And Northern Gulf Of Mexico Coast

4. Photos: Tropical Storm Isaac Lashed Cuba

5. Photos: Tropical Storm Isaac Hit Cuba And Haiti

6. Photo: Tropical Storm Isaac In Domincan Republic, Heading For Haiti

7. Tropical Storm Isaac Hit Caribbean – Photo

Mississippi River Flooding – Louisiana And Mississippi Underwater In Pictures

The floodgate at the Morganza Spillway in Morganza, Louisiana, was opened on Saturday, May 14, 2011.

Please click here for ‘Floodgate At The Morganza Spillway Is Now Opened – Pictures’

Water from the Mississippi River rushes out of open bays on the Morganza Spillway and into a pasture in Morganza, La., Monday, May 16, 2011. (AP Photo/Patrick Semansky)

Water from the Mississippi River rushes out of open bays on the Morganza Spillway in Morganza, La., Monday, May 16, 2011. (AP Photo/Patrick Semansky)

After 3 days, the water from the flooded Mississippi River has reached places like Butte LaRose and St. Landry Parish at the northern end of the basin, putting some houses underwater.

Towns and crop lands along the Atchafalaya River basin that are in the path of the diverted flood waters could be flooded as high as 20 feet in coming days.

On Tuesday, the Coast Guard closed a 15-mile stretch of the Mississippi River at Natchez, Mississippi, north of New Orleans.

Vessels were blocked from heading toward the Gulf of Mexico and from returning north after dropping off their freight.

These barges carry corn, wheat, soybean and others from the Midwest to ports near New Orleans, where they get loaded onto huge grain carriers to be exported around the world.

 Below are photos of the flooding along the Mississippi River.

Water rushes over dirt roads inside the Morganza Floodway as water from the flowing floodway heads south near Krotz Springs, Louisiana, May 17, 2011. (REUTERS/Sean Gardner) 

Farmers work as floodwaters from the Mississippi river creep across their fields in Natchez, Miss., Tuesday, May 17, 2011. The Coast Guard said it closed the Mississippi River at the port in Natchez, Miss., on Tuesday because barge traffic could increase pressure on the levees. Heavy flooding from Mississippi tributaries has displaced more than 4,000 in the state, about half of them upstream from Natchez in the Vicksburg area. (AP Photo/Dave Martin)

Floodwaters from the Mississippi River have closed Highway 61 north of Vicksburg, Miss., Tuesday, May 17, 2011. (AP Photo/Dave Martin)

Farmers work as floodwaters from the Mississippi river creep across their fields in Natchez, Miss., Tuesday, May 17, 2011. (AP Photo/Dave Martin)

Flood waters from the Mississippi River creep inland across a field of soybeans in Natchez, Miss., Tuesday, May 17, 2011. The Coast Guard closed the swollen Mississippi River north of New Orleans, halting cargo vessels on the nation's busiest waterway in the latest effort to reduce pressure from rising flood waters. (AP Photo/Dave Martin)

Barges operate along the flooded Mississippi River near Vicksburg, Miss., Tuesday, May 17, 2011. (AP Photo/Dave Martin)

Farmers work as flood waters from the Mississippi river creep across their fields in Natchez, Miss., Tuesday, May 17, 2011. (AP Photo/Dave Martin)

Farmers work as flood waters from the Mississippi river creep across their fields in Natchez, Miss., Tuesday, May 17, 2011. (AP Photo/Dave Martin)

Flood waters from the Mississippi River have closed Highway 61 north of Natchez, Miss., Tuesday, May 17, 2011. (AP Photo/Dave Martin)

The runway at the airport in Vicksburg, Miss., is surrounded by Mississippi river flood waters Tuesday, May 17, 2011. (AP Photo/Dave Martin)

Flooded homes, including one surrounded by a makeshift levee that failed, top, are seen in Vicksburg, Miss., Tuesday, May 17, 2011. (AP Photo/Dave Martin)

Floodwaters surround the Yazoo and Mississippi Valley Railroad Station just outside a protective floodwall in Vicksburg, Miss., Tuesday, May 17, 2011. (AP Photo/Dave Martin)

A business outside the levee south of Vicksburg, Miss., is surrounded by Mississippi river flood waters Tuesday, May 17, 2011. (AP Photo/Dave Martin)

Flooded crops in Vicksburg, Miss., are pictured Tuesday, May 17, 2011. (AP Photo/Dave Martin)

A crane flies over a street sign near a rule measuring the height of the flood waters in feet, in St. Francisville, Louisiana May 17, 2011.(REUTERS/Sean Gardner)