95
Recorded events
0
Direct deaths
1
Direct injuries
$216.2M
Property damage
Flood in Marin County, California: 95 recorded events between 2002 and 2025. The strongest on record measured 0. That places the county #59 nationally and #14 statewide for this hazard.
Decade by decade
Flood in Marin County, California: events per decade
Reporting practice changed over time — early decades are undercounted, not calmer.
The busiest decade for flood in Marin County is the 2010s, when 66 of the county's 95 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 Marin County archive, flood makes up 56.9% of all recorded severe weather across 8 hazard types. Nationally the county sits at #59 for this hazard and #14 within California, putting it in the 97.9 percentile of all U.S. counties.
Seasonality
Events by month
Feb is the peak month for flood in Marin County with 36 recorded events, while Jun 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 |
|---|---|---|---|---|---|
| Feb 4, 2025 | TOCALOMA | 0 | 0 | 1 | $10 |
Most recent
Latest recorded events
| Date | Location | Magnitude | Damage |
|---|---|---|---|
| Dec 22, 2025 | OLEMA | 0 | $0 |
| Nov 17, 2025 | GREEN BRAE | 0 | $0 |
| Feb 13, 2025 | GREEN BRAE | 0 | $0 |
| Feb 4, 2025 | TOCALOMA | 0 | $10 |
| Dec 29, 2024 | BOLINAS | 0 | $0 |
| Dec 27, 2024 | MILL VLY | 0 | $0 |
| Dec 27, 2024 | GREEN BRAE | 0 | $0 |
| Dec 27, 2024 | PT REYES STATION | 0 | $10 |
| Nov 21, 2024 | GREEN BRAE | 0 | $0 |
| Feb 19, 2024 | TOMALES | 0 | $0 |
From the record
What the reports say
Written by National Weather Service staff at the time of the event · public domain
Heavy rain and overwhelmed storm drains led to a couple of flooded businesses in San Anselmo along Greenfield Avenue. Over 6 inches of rain fell within a 12 hour period. Kentfield shattered the 24 hour rainfall record for October 13 reporting 6.14 inches. Also, the morning commute was bogged down due to flooding along Highway 101 near Lucky Drive and Tamalpais Drive in Corte Madera, and at the junction of Highway 1 in Marin City.
Flooding damaged White Hill Middle School and classes were cancelled on Monday December 3rd due to classrooms being flooded. Significant flooding occurred with the library and several other classrooms covered in mud. Two art classrooms and two seventh grade classrooms, as well as an administrative office and a staff room suffered water damage.
A woman drove through a downpour on Platform Bridge Road before a large puddle caused her to lose control and crash into a flooded creek. A Marin County Sheriffs deputy rescued her and helped her reach safety. Some additional vehicles became stuck after they ignored road closure signs.
Quick answers
Frequently asked
How many flood events are on record in Marin County, California?
95 flood events are recorded in Marin County between 2002 and 2025, causing 0 direct deaths.
What is the strongest flood recorded in Marin County?
The strongest flood on record in Marin County measured 0.
Where does the flood data for Marin 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
“Flood in Marin County, California.” Severe Weather History. severeweatherhistory.com/county/california/marin-county/flood/ · Data: NOAA/NCEI, FEMA, U.S. Census — public domain.