73
Recorded events
1
Direct deaths
0
Direct injuries
$2.4M
Property damage
Flash Flood in Williamson County, Tennessee: 73 recorded events between 1996 and 2025. The strongest on record measured 0. That places the county #316 nationally and #5 statewide for this hazard.
Decade by decade
Flash Flood in Williamson County, Tennessee: events per decade
Reporting practice changed over time — early decades are undercounted, not calmer.
The busiest decade for flash flood in Williamson County is the 2010s, when 28 of the county's 73 recorded events were logged. Comparing decades is useful for spotting active periods, but the earliest years are thin because systematic reporting for this hazard began later.
Within the Williamson County archive, flash flood makes up 9.3% of all recorded severe weather across 8 hazard types. Nationally the county sits at #316 for this hazard and #5 within Tennessee, putting it in the 89.8 percentile of all U.S. counties.
Seasonality
Events by month
May is the peak month for flash flood in Williamson County with 12 recorded events, while Aug is the quietest. Seasonality here is a property of the archive as much as the climate: reports cluster where population and spotter networks are densest.
Significant events
Deadliest on record
| Date | Location | Scale | Deaths | Injuries | Damage |
|---|---|---|---|---|---|
| May 1, 2010 | PEYTONSVILLE | 0 | 1 | 0 | $50K |
Most recent
Latest recorded events
| Date | Location | Magnitude | Damage |
|---|---|---|---|
| May 20, 2025 | ARRINGTON | 0 | $0 |
| May 20, 2025 | RUDDERVILLE | 0 | $0 |
| May 20, 2025 | SOUTHALL | 0 | $0 |
| Apr 5, 2025 | LAMPLEY STORE | 0 | $0 |
| Apr 3, 2025 | NEW HOPE | 0 | $0 |
| Apr 3, 2025 | WALNUT GROVE | 0 | $0 |
| Apr 3, 2025 | LAMPLEY STORE | 0 | $0 |
| Feb 16, 2025 | FERNVALE | 0 | $0 |
| May 3, 2021 | THOMPSONS STATION | 0 | $0 |
| Mar 28, 2021 | CLOVERCROFT | 0 | $1.5M |
Other hazards here
More from Williamson County
- Thunderstorm Wind 428
- Hail 197
From the record
What the reports say
Written by National Weather Service staff at the time of the event · public domain
Major flash flooding affected northern Williamson County, with many roadways flooded and closed, many homes and businesses flooded, and numerous water rescues conducted from vehicles and homes. Roads were flooded and closed and homes were flooded around Harpeth River Drive and Granny White Pike at Belle Rive Drive in Brentwood, the Fieldstone Farms and the Meadowgreen Acres subdivisions on Hillsboro Road in Franklin. A river gauge on the Little Harpeth River at Granny White Pike crested at 16.20 feet at 135 am CDT.
Major flash flooding affected the Nolensville area. Several homes, businesses, and other buildings were flooded. Some of the buildings flooded included the Williamson County Parks and Recreation Center, located at 7250 Nolensville Road, which suffered damage estimated at $321,663.47; the Mill Creek Church of Christ at 7260 Nolensville Road; and the historic Nolensville School at 7248 Nolensville Road. Numerous roads were also flooded and closed including Baronswood Drive, Kidd Road, Nolensville Road, Sunset Road, York Road, Old Clovercroft Road, Summerlyn Drive, Oldham Drive, Concord Road, Rocky Springs Road, Rocky Ford Road, Stonebrook Blvd., Dortch Lane, McFarlin Road, Fly Road, and Brittain Lane. The Brittain Lane bridge over Mill Creek was damaged by the flooding and indefinitely closed. Five water rescues were conducted in the area with many vehicles submerged.
Several cars were trapped on water-covered roads including Cool Springs Blvd., Bakers Bridge Avenue, and Duke Drive. Media also reported that water rescues occurred in this area, along with railroad trains having to be diverted following damage to the railroad tracks near Moores Lane in south Brentwood, where about four feet of floodwaters inundated Empire Beauty School and a BP gas station on either side of these tracks. Specific details on amount of damage and associated damage repair costs to the Empire Beauty School and the BP gas station where unknown.
Quick answers
Frequently asked
How many flash flood events are on record in Williamson County, Tennessee?
73 flash flood events are recorded in Williamson County between 1996 and 2025, causing 1 direct deaths.
What is the strongest flash flood recorded in Williamson County?
The strongest flash flood on record in Williamson County measured 0.
Where does the flash flood data for Williamson County come from?
All events come from the NOAA/NCEI Storm Events Database, the federal public-domain archive of severe weather reports. Dates are UTC, damage is as reported and not inflation-adjusted, and the most recent entries may still be revised.
Cite this page
“Flash Flood in Williamson County, Tennessee.” Severe Weather History. severeweatherhistory.com/county/tennessee/williamson-county/flash-flood/ · Data: NOAA/NCEI, FEMA, U.S. Census — public domain.