Alabama, Mississippi and the Panhandle all have to deal with destruction brought on by flooding and wind.
Although much of the attention Monday was focused on New Orleans, Hurricane Katrina inflicted widespread damage along the Gulf Coast. Here's a look at some of the problems:
Mississippi
Katrina delivered a crushing punch to parts of the Mississippi coast.
Sustained winds of 135 mph pummeled the area, ripping the windows out of Gulfport Memorial Hospital in Biloxi and knocking over buildings.
A 22-foot storm surge inundated several coastal towns along St. Louis Bay. In some areas, authorities pulled stranded homeowners from roofs or rescued them from attics.
Sailboats washed onto U.S. 98.
"Let me tell you something folks: I've been out there. It's complete devastation," said Gulfport, Miss., fire Chief Pat Sullivan.
The Beau Rivage Hotel and Casino, one of the premier gambling spots in Biloxi, had water on the first floor. Other casinos also were reported flooded.
The Mississippi Emergency Management Agency said Monday that about 8,500 people were in 79 shelters. American Red Cross shelters were filled to capacity.
The Coast Guard closed ports and waterways along the Gulf Coast and evacuated its own personnel and equipment.
More than 40 Coast Guard aircraft from units along the entire eastern seaboard, along with more than 30 small boats, patrol boats and cutters, were positioned around the area to be ready to conduct post-hurricane search and rescue operations, to do waterway damage checks and begin repairs.
Alabama
An oil platform that broke loose floated toward Mobile on Monday before slamming into the Cochrane-Africatown USA Bridge on U.S. 98 in north Mobile.
The platform jammed under the west end of the main span, which is used to transport hazardous materials and bypass the Wallace Tunnel on Interstate 10 in downtown Mobile.
In Mobile, floodwaters pushed up Water Street and surrounded the historic GM&O building.
Several cars and sport utility vehicles were all but submerged in the parking lot, the trunks popped open and their windshield wipers turned on with no one inside. Near the Mobile Register in downtown, water trapped a compact car at an Exxon gas station. A sport utility vehicle rescued at least one person from the car as the water continued to rise around the station, which had become an island.
The floods moved waste bins along Water Street as the wind whipped the water into a light chop. An ice freezer - a traditional staple at gas stations - floated north.
In Mobile Bay, Katrina covered Fred Wright's yard and muddy waves bumped against the back of his home.
"There are lots of homes through here worth a million dollars," he said. "At least they were yesterday."
Katrina turned Pete Vakakes' Lagoon Pass, Ala., neighborhood into a ghost town.
By 8:30 a.m. Monday, Vakakes had moved 5 miles inland to stay with friends after Gulf Shores cut power and water to some areas of the city.
"My home is 5 feet underwater," said Vakakes, whose house is 13 feet above sea level. "Water has breached the berm."
In Point Clear, 12 feet of floodwaters filled the bottom floor of Marriott's Grand Hotel. The historic hotel was demolished and rebuilt after a hurricane in 1893.
Scenic U.S. 98, which runs through Point Clear along the eastern side of Mobile Bay, was submerged for long stretches.
A daylong curfew went into effect for Mobile County communities. Almost 200,000 Alabama residents were without power, most of them in the Mobile area.
At least two highway deaths in Alabama were blamed on the storm. Nearly 10,000 National Guard troops were on standby.
Florida
Hundreds of miles from Katrina's center, the storm was still causing problems.
On Santa Rosa Island, along Florida's Panhandle, floodwaters covered new sand that had been dredged from offshore and washed it into a beachfront parking lot at the center of the community.
Navarre Beach, the Santa Rosa County town where Hurricane Dennis made landfall last month, was battered by tropical storm-force winds.
"Gulf Boulevard is awash and the road is starting to come up in some places," said Santa Rosa County spokesman Don Chinery. "There's some erosion going on."
About 1,500 people were in shelters in Escambia County, including some who had evacuated from Louisiana and Mississippi. Many others were in Panhandle hotels.
"This is a tame version of Ivan for downtown," said Pensacola resident Brian Spencer, who lives and works just blocks from the waterfront.
Authorities early Monday closed the I-10 bridge over Escambia Bay, which was severely damaged by Hurricane Ivan last September, and the U.S. 98 bridge across Pensacola Bay.
That left the U.S. 90 bridge over the Escambia River the only remaining link between Pensacola and points east.
--Compiled by staff writer Graham Brink. Information from the Associated Press, the (Biloxi, Miss.) Sun Herald, the Mobile (Ala.) Register, the Birmingham (Ala.) Post-Herald and the New York Times was used in this report.