Hurricane Katrina: When Records Are Destroyed

Twenty-one years ago this Saturday, Hurricane Katrina came ashore on the Gulf Coast. You know the human numbers. The storm surge, the levee failures, the deaths, the people who left Louisiana and Mississippi on August 29, 2005 and never came back.

Here is the part genealogists skip past.

Under all that water sat the records. Successions, marriage licenses, property transfers, church rolls, court files, city archives. Most of it in basements, because basements are where cities put the old stuff nobody thinks about until they need it.

Hurricane Katrina: What Actually Happened Down There

The levee failures put roughly eighty percent of New Orleans underwater, up to fifteen feet in some neighborhoods, and it took about three weeks to drain the city. Think about what three weeks of standing water in August does to a bound volume.

The New Orleans Notarial Archives is the case study. Those records hold every property transaction in the city going back centuries, and a huge block of the modern volumes sat in the basement of the Civil District Courthouse, a space originally built as a Cold War bomb shelter. Ironic, right? Hardened against a nuclear strike. Not against rain. Water soaked a substantial share of the sixty thousand leather-bound books down there.

Watch how the estimate moved. The curator’s initial report put the wet volumes at about two thousand. Later assessments came back much higher, likely north of twenty percent of the collection. The first number is always the optimistic one.

Salvage crews pumped out the water, hauled the volumes into refrigerated trailers, and ran them through vacuum freeze-drying. Meanwhile the Notarial Archives research center a few blocks away had records dating to the 1700s, much of it on linen, exposed to rain through blown-out windows.

It was not only New Orleans. Judges in Chalmette were reportedly working to reconstruct St. Bernard Parish court records damaged by flooding. Evidence files at the Louisiana Supreme Court were reported soaked. The city archives in the basement of the New Orleans Public Library were probably damaged.

Hurricane Katrina: The Courthouse That Got Lucky

Now the other side of it.

Katrina tore the roof off the 1911 Hancock County Courthouse in Bay St. Louis, Mississippi, near where the storm came ashore. Windows blown out. Mold on the chancery clerk’s ceiling, mud on the floors. By any reasonable expectation the marriage licenses going back to the mid-1800s should have been a total loss.

Most of the records survived. Staff had covered them before the storm, and the building’s thick walls did the rest.

That is the whole lesson in one building. An afternoon of preparation is the reason a researcher in 2026 can still pull an 1870s Hancock County marriage license.

Hurricane Katrina: Let Me Give You a Hypothetical

This one is invented. You will recognize the shape of it anyway.

Say you are tracing an Isleño family in St. Bernard Parish, Canary Islander descent, in the parish since the 1780s. You have your great-great-grandmother in the 1900 census and you have her death record. The gap in the middle is her second marriage around 1908. There is a succession file in Chalmette that would settle it. You found the index entry in 2003 and told yourself you would order a copy the next time you had forty dollars to spare.

Then it is September 2005 and the parish is gone.

Maybe that file survived. Maybe it was pulled, frozen, dried, and reshelved. Maybe it went to mold in a warehouse nobody has inventoried yet. Either way the forty dollars stopped being the deciding factor, and the thing between you and that marriage is now a coin flip you do not get to make.

Hurricane Katrina: The Paper Trail Katrina Left Behind

Something genealogists still are not doing enough of: capturing the displacement itself as a record set. Katrina scattered families across the country, and that trail is aging right now. FEMA correspondence. Property and insurance claim files. Obituaries published in whatever city people landed in. School transfer records for the kids. Church membership rolls that moved when the congregation moved. Photographs, damage maps, and the oral histories nobody has recorded yet.

Temporary addresses matter more than people realize. Where your aunt lived for fourteen months in Houston is very likely written down nowhere except her own memory and maybe an old insurance letter. No census caught it. Ask her. Write it down.

Hurricane Katrina: Digital Is Not a Backup for Paper

Here is where genealogists get sloppy in both directions. The scanner crowd digitizes everything, throws out the originals, then loses the drive. The paper crowd keeps every original in a garage bin and never scans a page, then the garage floods. Both of these people lose their research.

Keep digital copies well outside the region you live in. A hard drive at your sister’s house across town is not offsite when the storm is a hundred miles wide.

Keep the paper too, and keep it up off the floor. Archival boxes on an elevated shelf in an interior closet. Original photographs, family Bibles, land deeds, and certified vital records carry evidentiary weight that a JPEG does not.

The courthouse flooded. The microfilm did not. Decades of microfilming by FamilySearch and others means a lot of Gulf Coast parish and county records exist in duplicate, stored a thousand miles away in Utah. That redundancy is the only reason some of this material is still readable. Your research deserves the same treatment.

Learn how to back up your important records and preserve your family history legacy. Pick one thing this weekend. Scan the twenty photographs you would grab if the house were on fire, get them into offsite storage, and move the originals somewhere that is not the basement. Then do the next twenty.

Somebody in Bay St. Louis spent an afternoon covering shelves with plastic in August 2005. They had no idea they were saving anyone’s family history. They were doing the boring thing.

What is your boring thing, and when are you doing it?

Here’s another AI prompt from my new book Have You Ever Seen a Hearse Pulling a Moving Trailer?: The Complete Guide to Future-Proofing Your Family History:

“I am a genealogist planning for the long-term preservation of my research collection. My collection includes [describe: e.g., 10 binders of paper records, a Family Tree Maker database with 15,000 names, 3 boxes of photographs, and accounts on Ancestry and FamilySearch]. I have never created a preservation or succession plan before. Can you help me create a prioritized list of the first five steps I should take, starting with the most time-sensitive actions?

Simple. Powerful. Potentially priceless.

AI for genealogy isn’t about replacing research. It’s about helping us preserve family history before memories disappear forever.

My book includes practical prompts like this that genealogists can use immediately.

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Author’s Note: I want to be transparent that this content – Hurricane Katrina: When Records Are Destroyed – was created in part with the help of an artificial intelligence (AI) language model – Claude Opus 5. The AI assisted in generating an early draft of the content, but every paragraph was subsequently reviewed, edited, and refined by me. The final content is the result of extensive human curation and creativity. I am proud to present this work and assure readers that while AI was a tool in the process, the story, style, and substance have been carefully shaped by the author.