49
Recorded events
0
Direct deaths
0
Direct injuries
$22.1M
Property damage
Flood in Lake County, Indiana: 49 recorded events between 2006 and 2025. The strongest on record measured 0. That places the county #248 nationally and #9 statewide for this hazard.
Decade by decade
Flood in Lake County, Indiana: events per decade
Reporting practice changed over time — early decades are undercounted, not calmer.
The busiest decade for flood in Lake County is the 2010s, when 23 of the county's 49 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 Lake County archive, flood makes up 7.4% of all recorded severe weather across 10 hazard types. Nationally the county sits at #248 for this hazard and #9 within Indiana, putting it in the 91.5 percentile of all U.S. counties.
Seasonality
Events by month
Jun is the peak month for flood in Lake County with 10 recorded events, while Nov 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.
Most recent
Latest recorded events
| Date | Location | Magnitude | Damage |
|---|---|---|---|
| Dec 28, 2025 | BELSHAW | 0 | $0 |
| Aug 19, 2025 | HAMMOND | 0 | $0 |
| Aug 17, 2025 | WHITING | 0 | $0 |
| Jul 26, 2025 | RANGE LINE | 0 | $0 |
| Jul 26, 2025 | CROWN POINT | 0 | $0 |
| Sep 17, 2023 | WHITING | 0 | $0 |
| Oct 25, 2021 | HAMMOND | 0 | $0 |
| Jun 10, 2020 | MUNSTER | 0 | $0 |
| Jun 10, 2020 | DYER | 0 | $0 |
| Jan 11, 2020 | WHITING | 0 | $0 |
Other hazards here
More from Lake County
- Thunderstorm Wind 353
- Hail 144
- Tornado 48
From the record
What the reports say
Written by National Weather Service staff at the time of the event · public domain
Record flooding occurred along the Little Calumet River and its tributaries in northwest Indiana. A record crest of 17.32 feet was set at Munster on the 14th. Record flooding also occurred along Hart Ditch. Nearly 190 patients were evacuated from the Munster Med-Inn. Major flooding was reported in Munster with over a thousand homes evacuated as a levee along the Little Calumet River failed. Interstate 80/94 was closed in northwest Indiana when levees were topped by flood waters.
St. Margaret Mercy Hospital in Dyer Indiana suffered significant flooding around noon on Friday, August 24th, about 20 hours after the heavy rains fell, when Hart Ditch overflowed it's banks. Sixty seven patients were evacuated from the healthcare center when it was apparent that floodwaters entering the building would submerge the Hospital���s emergency generators and cutoff the buildings power supply. The first floor suffered significant water damage. More than 150 homes near the creek also sustained some type of flood damage. US 30 at Plum Creek was closed due to flooding. Numerous cars were also damaged by flood waters.
Many roads were closed due to flooding. Numerous basements were also flooded. Creeks and streams overflowed their banks. The Broadfield subdivision in Merrillville suffered significant flooding. Lowell measured 2.81 inches of rainfall.
Quick answers
Frequently asked
How many flood events are on record in Lake County, Indiana?
49 flood events are recorded in Lake County between 2006 and 2025, causing 0 direct deaths.
What is the strongest flood recorded in Lake County?
The strongest flood on record in Lake County measured 0.
Where does the flood data for Lake 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 Lake County, Indiana.” Severe Weather History. severeweatherhistory.com/county/indiana/lake-county/flood/ · Data: NOAA/NCEI, FEMA, U.S. Census — public domain.