Photos and video of Hurricane Ida's devastation

Hurricane Ida barreled into the Louisiana coast on Sunday, bringing with it catastrophic levels of flooding and 150 mph winds that tied it for the fifth-strongest hurricane ever to hit the U.S. mainland.

Officials described chest-level floodwaters filling homes. The entire city of New Orleans lost power. Levees were overtopped. Winds scattered power lines. Residents were trapped on rooftops and in attics.

At least one death was reported by Monday morning, but much of the damage remained unaccounted for, and rescue efforts remain underway.

The winds also slowed down on Monday, causing Ida to become a tropical storm as it centered over Mississippi. But dangerous winds and flash floods continue to threaten the region, complicating efforts to save trapped residents and repair electricity grids.

Police Detective Alexander Reiter walk through debris from a collapsed building.

Notably, Ida smashed into Louisiana on the 16th anniversary of Hurricane Katrina, striking the same coastline and drawing instant comparisons between the two storms. Katrina caused widespread devastation, with a death toll of over 1,800 and damage topping $175 billion.

But Louisiana has worked to improve its levee system to prevent that level of catastrophe from reoccurring.

"There is no doubt that the coming days and weeks are going to be extremely difficult for our state, and many, many people are going to be tested in ways that we can only imagine today," Louisiana Gov. John Bel Edwards said at a Sunday press conference shortly before the storm made landfall. "But I can also tell you, as a state, we have never been more prepared."

View photos of Ida's impact below. This post will be updated throughout the day.

A man in a wheelchair takes refuge under a bus stop shelter as a nearby tree bows against the wind.
A man in a wheelchair takes refuge under a bus stop shelter along Canal Street as Category 4 Hurricane Ida arrives on Sunday in New Orleans, La. (Michael Robinson Chavez/The Washington Post via Getty Images)
A man holds a phone near an urban coastline as a large wave swells behind him.
A man takes pictures of high waves along the shore of Lake Pontchartrain as Hurricane Ida nears, on Sunday in New Orleans. (Gerald Herbert/AP)
A man walks through a rainy intersection littered with mangled wrought iron railing, bent street pole and a section of roof that was blown off of a building.
A man passes by a section of roof that was blown off of a building in the French Quarter by Hurricane Ida winds on Sunday in New Orleans. (Eric Gay/AP)
A woman and child stand near cars as they block their faces from the wind and rain.
A woman and child block their faces from the wind and rain produced by Hurricane Ida on Sunday in New Orleans. (Eric Gay/AP)
Trees and bushes bow against the wind and rain on the median strip of a road beneath large buildings.
Trees sway in the wind from Hurricane Ida in downtown New Orleans on Sunday. (Luke Sharrett/Bloomberg via Getty Images)
Two people stand on a path between buildings at night, illuminated by a sole light source behind them.
Pedestrians on Bourbon Street during a citywide power outage caused by Hurricane Ida in New Orleans on Sunday. (Luke Sharrett/Bloomberg via Getty Images)
Damaged vehicles next to a partially collapsed building.
Vehicles are damaged after the front of a building collapsed during Hurricane Ida on Sunday in New Orleans. (IScott Olson/Getty Images)
Firefighters sitting and standing around a conference table bow their heads with hands clasped.
Firefighters pray together as the hurricane eye wall gets close to the fire station in Bourg, La., on Sunday. (Mark Felix AFP via Getty Images)
Water enters a beach house.
Water enters a beach house as Hurricane Ida makes landfall in Grand Isle, La., on Sunday in this still image taken from social media video. (Christie Angelette via Reuters)
Partially collapsted storefront with bricks scattered over parking lot next to intact wall painted with
The Karofsky shop suffers severe damage after Hurricane Ida pummeled New Orleans with strong winds in Louisiana on Sunday. (Devika Krishna Kumar/Reuters)
A car drives toward fallen utility poles wth yellow tape stretched across the street.
Traffic diverts around power poles that hang over a road after Hurricane Ida moved through, on Monday, in Metairie, La. (Steve Helber/AP)
House with a section of wall missing and debris scattered about the sidewalk.
A house in New Orleans, where Chris Atkins and his wife were when the sheet rock came off during Hurricane Ida on Sunday. (Rebecca Santana/AP)
A person walks debris including a mangled section of roof that rests in a parking lot.
A local resident walks past destruction outside a hotel in the aftermath of Hurricane Ida in Houma, La., on Monday. (Adrees Latif/Reuters)
Flooded streets are seen from above with car partially submerged, nose down.
Flooded streets in Kenner, La., on Monday are pictured after Hurricane Ida made landfall the day before. (Marco Bello/Reuters)
Firefighters assess damage amid fallen building debris.
New Orleans firefighters assess damage as they look through debris after a building collapsed from the effects of Hurricane Ida in New Orleans. (Eric Gay/AP)
A man and child wade through water
A man and his stepson Saint Rose, La., on Monday. (Patrick T. Fallon/AFP via Getty Images)
A person on a bicycle passes a damaged gas station.
A resident views a damaged Shell station in Kenner, La., on Monday. (Patrick T. Fallon/AFP via Getty Images)
Pile of bricks, metal pipe, and wood from a building collapse.
A small shop in New Orleans suffers severe damage. (Devika Krishna Kumar/Reuters)
Highway 51
Highway 51 is flooded after Hurricane Ida struck LaPlace. (Mickey Welsh/Montgomery Advertiser/USA TODAY Network via Reuters)
Dartanian Stovall
Dartanian Stovall looks at the house that collapsed with him inside during the height of Hurricane Ida, New Orleans. (Michael DeMocker/USA Today Network via Reuters)
A resident walks through floodwater
A resident walks through floodwater left behind by Hurricane Ida in LaPlace. (Luke Sharrett/Bloomberg via Getty Images)
Jacob Hodges, right, and Jeremy Hodges
Jacob Hodges, right, and his brother Jeremy Hodges clear debris from their storage unit in Houma, which was destroyed by Hurricane Ida. (David J. Phillip/AP)
First responders
First responders maneuver through flooded streets in LaPlace. (Luke Sharrett/Bloomberg via Getty Images)
Rene Hebert
Rene Hebert salvages what he can from his family's destroyed offices in Houma. (David J. Phillip/AP)
Members of a rescue team
Members of a rescue team help evacuate people in LaPlace. (Marco Bello/Reuters)
Theophilus Charles
Theophilus Charles at his house, heavily damaged by Hurricane Ida, in Houma. (Adrees Latif/Reuters)
Residents ride in a boat
Residents in LaPlace are rescued from floodwater. (Luke Sharrett/Bloomberg via Getty Images)
A flooded street
A street in LaPlace is flooded after Hurricane Ida made landfall. (Marco Bello/Reuters)
Floodwaters left behind by Hurricane Ida
Floodwaters left behind by Hurricane Ida outside a home in LaPlace. (Luke Sharrett/Bloomberg via Getty Images)

____

Read more from Yahoo News: