Flood events in Hancock County, Illinois 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 94 flood events on record for Hancock County, Illinois, from 1996 through 30 Jun 2026.
The newest flood event on record is on 31 May 2022.
From 2016 through 2025, NCEI has 15 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
5 miles ENE of DENVER
Flash Flood
3 miles W of AUGUSTA
Flash Flood
1 mile E of HAMILTON
Flood
5 miles SSW of WARSAW
Flash Flood
At PLYMOUTH
Flash Flood
1 mile E of CARTHAGE
Flood
4 miles E of NAUVOO
Flood
22 miles N of DISCO
Flash Flood
At HAMILTON
Flood
1 mile S of HAMILTON
Flood
2 miles WSW of HAMILTON
Flood
2 miles WSW of NAUVOO
Flood
2 miles N of NAUVOO
Flood
1 mile N of DALLAS CITY
Flash Flood
5 miles N of HAMILTON
Flash Flood
1 mile NNW of WEST PT
Flash Flood
2 miles SSE of NAUVOO
Flash Flood
1 mile N of BOWEN
Flood
1 mile SE of HAMILTON
Flood
At HAMILTON
Flood
6 miles N of NAUVOO
Flood
3 miles S of BURNSIDE
Flood
3 miles S of BURNSIDE
Flood
63 miles N of DALLAS CITY
Flood
5 miles NE of LA HARPE. Damage estimate: $250 thousand
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 | 0 | 2 | 1 | 1 | 4 |
| 2000s | 6 | 7 | 6 | 2 | 8 | 3 | 0 | 5 | 5 | 6 | 48 |
| 2010s | 12 | 5 | 0 | 6 | 1 | 3 | 0 | 1 | 1 | 11 | 40 |
| 2020s | 0 | 1 | 1 | 0 | 0 | 0 | 0 (part of the year) | 2 |
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
- Feb3 events
- Mar1 event
- Apr11 events
- May21 events
- Jun28 events
- Jul14 events
- Aug5 events
- Sep1 event
- Oct5 events
- Nov1 event
- Dec2 events
Beside the other counties
| Measure | Hancock | All counties of Illinois | All counties of the United States |
|---|---|---|---|
| Flood events, 1996 to 2026 | 94 | 6,491 | 177,902 |
| Events for each 100 square miles | 11.8 | 11.7 | 5.0 |
| Events for each 10,000 residents | 54.0 | 5.1 | 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 | none | 0 | 0 | County | |
| Flood | not recorded | $125 thousand | 0 | 0 | County | |
| Flash Flood | not recorded | $100 thousand | 0 | 0 | County | |
| Flash Flood | not recorded | $250 thousand | 0 | 0 | County | |
| Flash Flood | not recorded | $25 thousand | 0 | 0 | County | |
| Flash Flood | not recorded | none | 0 | 0 | County | |
| Flood | not recorded | $125 thousand | 0 | 0 | County | |
| Flood | not recorded | $150 thousand | 0 | 0 | County | |
| Flash Flood | not recorded | none | 0 | 0 | County | |
| Flash Flood | not recorded | none | 0 | 0 | County | |
| Flash Flood | not recorded | $100 thousand | 0 | 0 | County | |
| Flood | not recorded | $250 thousand | 0 | 0 | County | |
| Flood | not recorded | $250 thousand | 0 | 0 | County | |
| Flood | not recorded | $250 thousand | 0 | 0 | County | |
| Flash Flood | not recorded | $10 thousand | 0 | 0 | County | |
| Flash Flood | not recorded | none | 0 | 0 | County | |
| Flood | not recorded | $250 thousand | 0 | 0 | County | |
| Flash Flood | not recorded | none | 0 | 0 | County | |
| Flash Flood | not recorded | none | 0 | 0 | County | |
| Flood | not recorded | $250 thousand | 0 | 0 | County | |
| Flash Flood | not recorded | none | 0 | 0 | County | |
| Flood | not recorded | $100 thousand | 0 | 0 | County | |
| Flood | not recorded | none | 0 | 0 | County | |
| Flash Flood | not recorded | none | 0 | 0 | County | |
| Flood | not recorded | none | 0 | 0 | County | |
| Flood | not recorded | none | 0 | 0 | County | |
| Flash Flood | not recorded | none | 0 | 0 | County | |
| Flood | not recorded | none | 0 | 0 | County | |
| Flood | not recorded | none | 0 | 0 | County | |
| Flash Flood | not recorded | none | 0 | 0 | County | |
| Flash Flood | not recorded | none | 0 | 0 | County | |
| Flood | not recorded | none | 0 | 0 | County | |
| Flash 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 | Forecast zone | |
| Flood | not recorded | none | 0 | 0 | Forecast zone | |
| Flood | not recorded | none | 0 | 0 | Forecast zone | |
| Flood | not recorded | none | 0 | 0 | Forecast zone | |
| Flood | not recorded | none | 0 | 0 | Forecast zone | |
| Flood | not recorded | $5 thousand | 0 | 0 | Forecast zone | |
| Flood | not recorded | $3 thousand | 0 | 0 | Forecast zone | |
| Flood | not recorded | none | 0 | 0 | Forecast zone | |
| Flood | not recorded | none | 0 | 0 | Forecast zone | |
| Flash Flood | not recorded | $120 thousand | 0 | 0 | County | |
| Flood | not recorded | $1.0 million | 0 | 0 | Forecast zone | |
| Flash Flood | not recorded | none | 0 | 0 | County | |
| Flash Flood | not recorded | none | 0 | 0 | County | |
| Flash Flood | not recorded | none | 0 | 0 | County | |
| Flash Flood | not recorded | none | 0 | 0 | County | |
| Flash Flood | not recorded | none | 0 | 0 | County | |
| Flash Flood | not recorded | none | 0 | 0 | County | |
| Flood | not recorded | none | 0 | 0 | County | |
| Flood | not recorded | none | 0 | 0 | County | |
| Flood | not recorded | none | 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 | |
| Flood | not recorded | none | 0 | 0 | County | |
| Flash Flood | not recorded | none | 0 | 0 | County | |
| Flood | not recorded | none | 0 | 0 | County | |
| Flood | not recorded | none | 0 | 0 | County | |
| Flood | not recorded | none | 0 | 0 | County | |
| Flood | not recorded | none | 0 | 0 | Forecast zone | |
| Flood | not recorded | none | 0 | 0 | County | |
| Flood | not recorded | none | 0 | 0 | County | |
| Flood | not recorded | none | 0 | 0 | Forecast zone | |
| Flash 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: Quad Cities, IA/IL (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 Hancock County, Illinois". https://countyhazards.com/county/il/hancock/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 Hancock County?
- June has 28 of the 94 flood events on record from 1996 through 30 Jun 2026.
- How many flood events are on record for Illinois?
- NCEI has 6,507 flood events on record for Illinois from 1996 through 30 Jun 2026. That count has every forecast zone of the state.
- How does Hancock County compare with the other counties of Illinois?
- The counties of Illinois have 11.7 flood events for each 100 square miles. Hancock County has 11.8.
- 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.