Flood events in Ascension Parish, Louisiana The flood events on record, by date and by year
This page is a county record of past events and claims. It does not show the flood zone or the risk of an address. For the flood map of an address, use FEMA's address search (opens in a new tab).
NCEI has 34 flood events on record for Ascension Parish, Louisiana, from 1996 through 30 Jun 2026.
The newest flood event on record is on 30 Jul 2025.
From 2016 through 2025, NCEI has 19 flood events on record for the county.
The NWS collects event reports from a variety of sources, which include (but are not limited to): county, state, and federal emergency management officials, local law enforcement officials, SKYWARN spotters, NWS damage surveys, newspaper clipping services, the insurance industry, and the general public, among others.
The National Weather Service reports property and crop damage estimates using available data at the time of event reporting. These values should therefore be considered broad estimates. Damage amounts are not adjusted for inflation.
Zone (NWS Forecast Zone): A zone is a geographic area defined by the NWS for issuing forecasts, watches, and warnings. While zones often align with counties, they can also represent smaller or subdivided areas within a county to account for differences in weather conditions, such as elevation or proximity to water. Larger-scale events—such as heat, cold, drought, and winter storms—are typically recorded by zone.
The words of the agency. Source: NOAA NCEI, Storm Events Database, page "Frequently Asked Questions", copied on .
Date of the data: NCEI storm events through . Event types on this page: Flood, Flash Flood, Coastal Flood, Lakeshore Flood.
Newest flood events on record
Flash Flood
At OAK GROVE. Damage estimate: $28 thousand
Flash Flood
1 mile E of DONALDSONVILLE
Flash Flood
1 mile WNW of DUTCH TOWN
Flash Flood
1 mile NW of DUTCH TOWN
Flash Flood
1 mile NNW of DONALDSONVILLE
Flash Flood
1 mile SE of GALVEZ
Flash Flood
1 mile W of HOBART
Flash Flood
1 mile N of GALVEZ
Flash Flood
1 mile SW of PRAIRIEVILLE
Flash Flood
4 miles NE of LAKE
Flash Flood
2 miles NW of DUTCH TOWN. Damage estimate: $1 thousand
Coastal Flood
On record for the forecast zone
Flash Flood
4 miles NNW of HOPE VILLA
Flash Flood
2 miles NW of DUTCH TOWN
Flash Flood
At GEISMAR
Flash Flood
1 mile ESE of BRITTANY
Flood
2 miles N of HOBART. Damage estimate: $1.1 billion
Flash Flood
1 mile WNW of BULLION. Damage estimate: $460 million
Flash Flood
1 mile WSW of SORRENTO. Damage estimate: $120 thousand
Flash Flood
1 mile W of ABEN
Flash Flood
1 mile NNW of LOUISVILLE. Damage estimate: $200 thousand
Flash Flood
At GONZALES. Damage estimate: $10 thousand
Flash Flood
At GONZALES
Flash Flood
At PRAIRIEVILLE. Damage estimate: $25 thousand
Flash Flood
At GONZALES
A place is the text of the NCEI record: a distance and a direction from a reference place. The site does not show a place text that names a private property or reads as a person. NCEI gives no magnitude for this hazard.
Flood events by year
| Decade | Year that ends in 0 | Year that ends in 1 | Year that ends in 2 | Year that ends in 3 | Year that ends in 4 | Year that ends in 5 | Year that ends in 6 | Year that ends in 7 | Year that ends in 8 | Year that ends in 9 | All |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1950s | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1960s | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1970s | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1980s | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1990s | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 5 | 0 | 0 | 6 |
| 2000s | 0 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 4 |
| 2010s | 0 | 0 | 1 | 2 | 1 | 1 | 3 | 0 | 0 | 0 | 8 |
| 2020s | 1 | 9 | 1 | 0 | 4 | 1 | 0 (part of the year) | 16 |
A darker cell has a larger count. The number is in each cell.
Flood and flash flood events are on record from 1996. The year 2026 has the events through 30 Jun 2026 only.
By month, all years
- Jan2 events
- Feb0 events
- Mar1 event
- Apr2 events
- May9 events
- Jun7 events
- Jul4 events
- Aug4 events
- Sep1 event
- Oct0 events
- Nov2 events
- Dec2 events
Beside the other counties
| Measure | Ascension | All counties of Louisiana | All counties of the United States |
|---|---|---|---|
| Flood events, 1996 to 2026 | 34 | 3,284 | 177,902 |
| Events for each 100 square miles | 11.7 | 7.6 | 5.0 |
| Events for each 10,000 residents | 2.6 | 7.1 | 5.4 |
The columns for the state and the United States total the counties. They count the events of each county in the same way as the county column. A forecast zone with another name than a county counts for the state only.
More flood events on record
| Date | Event type | Magnitude | Damage estimate | Deaths | Injuries | On record for |
|---|---|---|---|---|---|---|
| Flash Flood | not recorded | $250 thousand | 0 | 0 | County | |
| Flood | not recorded | $750 thousand | 0 | 0 | Forecast zone | |
| Flash Flood | not recorded | $250 thousand | 0 | 0 | County | |
| Flash Flood | not recorded | $20 thousand | 0 | 0 | County | |
| Flash Flood | not recorded | $20 thousand | 0 | 0 | County | |
| Flood | not recorded | none | 0 | 0 | County | |
| Flood | not recorded | none | 0 | 0 | Forecast zone | |
| Flood | not recorded | none | 0 | 0 | Forecast zone | |
| Flood | not recorded | none | 0 | 0 | County |
The table has all other events on record. A damage figure is an estimate in the NCEI record.
Official channels
- NCEI Storm Events Database (opens in a new tab)Search the full NCEI record by state, county and date.
- National Weather Service: New Orleans/Baton Rouge (opens in a new tab)The forecast office that issues the weather warnings for the county.
- FEMA Flood Map Service Center: Search By Address (opens in a new tab)Search an address to see its flood map. This site has no flood-zone data.
These links open the pages of the agencies. The site checked the links on .
Cite this page
County Hazards. "Flood events on record for Ascension Parish, Louisiana". https://countyhazards.com/county/la/ascension/flood/. Data: NOAA NCEI Storm Events Database through 30 Jun 2026. Page made on .
Questions
- Which month has the most flood events on record for Ascension Parish?
- May has 9 of the 34 flood events on record from 1996 through 30 Jun 2026.
- How many flood events are on record for Louisiana?
- NCEI has 3,330 flood events on record for Louisiana from 1996 through 30 Jun 2026. That count has every forecast zone of the state.
- How does Ascension Parish compare with the other counties of Louisiana?
- The counties of Louisiana have 7.6 flood events for each 100 square miles. Ascension Parish has 11.7.
- Why are some flood events on record for a forecast zone?
- NCEI records some event types for a National Weather Service forecast zone and not for a county. This page counts a zone event when the zone has the name of the county.