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Flood in Cheyenne County, Colorado
31 floods and flash floods events in the NCEI Storm Events record, 1950 to 2026. Event types counted: Flood, Flash Flood, Coastal Flood, Lakeshore Flood.
NCEI notes that Storm Data is compiled from a variety of sources including the National Weather Service, other federal, state and local agencies, the media and the public; that property and crop damage figures are estimates; and that some events are recorded by NWS forecast zone rather than by county. FEMA notes that NFIP claim records are redacted and aggregated to protect the privacy of policyholders. Storm records through 30 Jun 2026.
NCEI records 31 flood events in Cheyenne County, Colorado, between 1950 and 2026, spread over 19 years.
July is the busiest month, with 14 of the recorded events. The last 20 years account for 19 events against 12 in the 20 years before, a change that reflects reporting practice as much as weather.
The county holds 1.6% of the 1,956 flood events recorded in Colorado; its 1.7 per 100 square miles compares with 1.9 statewide.
Compared with Colorado
| Measure | Cheyenne County | Colorado | US |
|---|---|---|---|
| Flood events since 1950 | 31 | 1,956 | 183,559 |
| Per 100 square miles | 1.7 | 1.9 | 5.2 |
| Per 10,000 residents | 181.6 | 3.4 | 5.5 |
| Deaths recorded | 0 | 47 | 2,961 |
| Busiest month | July | July | June |
By year
Seasonality
0Feb
0Mar
0Apr
2May
1Jun
4Jul
14Aug
8Sep
2Oct
0Nov
0Dec
0
Recorded events
All 31 events, most recent first. Magnitude is hail size, tornado rating or wind speed as recorded.
| Date | Event type | Magnitude | Property damage | Crop damage | Deaths | Injuries | Geography |
|---|---|---|---|---|---|---|---|
| 28 Aug 2025 | Flash Flood | — | $1K | — | — | — | County |
| 16 Jun 2023 | Flash Flood | — | — | — | — | — | County |
| 6 Jul 2022 | Flood | — | $10 | $10 | — | — | County |
| 12 Jul 2020 | Flash Flood | — | $3K | $10 | — | — | County |
| 29 Jul 2019 | Flash Flood | — | — | — | — | — | County |
| 29 Jul 2019 | Flash Flood | — | — | — | — | — | County |
| 29 Jul 2019 | Flash Flood | — | — | — | — | — | County |
| 8 Jul 2019 | Flash Flood | — | — | — | — | — | County |
| 2 Aug 2017 | Flash Flood | — | $75K | — | — | — | County |
| 2 Aug 2017 | Flash Flood | — | $150K | — | — | — | County |
| 2 Sep 2016 | Flash Flood | — | — | — | — | — | County |
| 15 Apr 2016 | Flash Flood | — | — | — | — | — | County |
| 12 Sep 2013 | Flash Flood | — | — | — | — | — | County |
| 28 Jul 2011 | Flash Flood | — | $3K | — | — | — | County |
| 22 Apr 2010 | Flash Flood | — | — | — | — | — | County |
| 7 Aug 2008 | Flash Flood | — | — | — | — | — | County |
| 17 Jul 2008 | Flash Flood | — | — | — | — | — | County |
| 1 Aug 2007 | Flash Flood | — | — | — | — | — | County |
| 27 May 2007 | Flood | — | $75K | — | — | — | County |
| 9 Jul 2006 | Flash Flood | — | — | — | — | — | County |
| 9 Jul 2006 | Flash Flood | — | — | — | — | — | County |
| 9 Jul 2006 | Flash Flood | — | — | — | — | — | County |
| 9 Jul 2004 | Flash Flood | — | — | — | — | — | County |
| 19 Jun 2003 | Flood | — | — | — | — | — | Forecast zone |
| 12 Jul 2001 | Flash Flood | — | — | — | — | — | County |
| 25 Jun 2001 | Flash Flood | — | — | — | — | — | County |
| 5 Aug 1999 | Flash Flood | — | — | — | — | — | County |
| 11 Aug 1998 | Flash Flood | — | — | — | — | — | County |
| 1 Aug 1998 | Flash Flood | — | — | — | — | — | County |
| 25 Jul 1998 | Flash Flood | — | — | — | — | — | County |
| 9 Jun 1997 | Flood | — | — | — | — | — | Forecast zone |
Questions and answers
How many flood events has Cheyenne County had?
31 events in the NCEI Storm Events record between 1950 and 2026. Reporting of floods and flash floods became far more complete after 1996, so early decades undercount.
When was the last recorded flood event in Cheyenne County?
28 Aug 2025 (Flash Flood). Records reach NCEI about 120 days after the month ends.
What was the most damaging flood event recorded in Cheyenne County?
The flash flood of 2 Aug 2017, with property damage estimated by NCEI at $150K.
How does Cheyenne County compare with Colorado for flood?
1.7 events per 100 square miles against 1.9 statewide; the county holds 31 of the state's 1,956 recorded events.
Provenance
NOAA NCEI Storm Events Database, yearly details files through 30 Jun 2026, public domain. County-recorded events plus zone-recorded events whose forecast zone is named for the county (marked "Forecast zone"). Population and area from the US Census Bureau (2021). Built 1 Oct 2026. See the methodology, the Flood hub and the county page.