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Flood in Grant County, New Mexico
69 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 69 flood events in Grant County, New Mexico, between 1950 and 2026, spread over 18 years.
July is the busiest month, with 26 of the recorded events. The last 20 years account for 52 events against 17 in the 20 years before, a change that reflects reporting practice as much as weather.
The county holds 3.7% of the 1,880 flood events recorded in New Mexico; its 1.7 per 100 square miles compares with 1.5 statewide.
NCEI attributes 2 deaths in the county to floods and flash floods.
Compared with New Mexico
| Measure | Grant County | New Mexico | US |
|---|---|---|---|
| Flood events since 1950 | 69 | 1,880 | 183,559 |
| Per 100 square miles | 1.7 | 1.5 | 5.2 |
| Per 10,000 residents | 24.7 | 8.9 | 5.5 |
| Deaths recorded | 2 | 51 | 2,961 |
| Busiest month | July | July | June |
By year
Seasonality
2Feb
0Mar
0Apr
0May
1Jun
0Jul
26Aug
24Sep
14Oct
1Nov
1Dec
0
Recorded events
All 69 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 |
|---|---|---|---|---|---|---|---|
| 25 Sep 2025 | Flash Flood | — | — | — | — | — | County |
| 25 Sep 2025 | Flash Flood | — | — | — | — | — | County |
| 18 Jul 2025 | Flash Flood | — | — | — | — | — | County |
| 16 Jul 2025 | Flash Flood | — | — | — | — | — | County |
| 2 Jul 2025 | Flash Flood | — | — | — | — | — | County |
| 22 Aug 2022 | Flood | — | — | — | — | — | County |
| 21 Aug 2022 | Flood | — | — | — | — | — | County |
| 27 Jul 2022 | Flash Flood | — | — | — | — | — | County |
| 5 Sep 2021 | Flash Flood | — | — | — | — | — | County |
| 16 Aug 2021 | Flash Flood | — | — | — | — | — | County |
| 10 Jul 2018 | Flash Flood | — | — | — | — | — | County |
| 30 Sep 2017 | Flash Flood | — | — | — | 2 | — | County |
| 4 Nov 2016 | Flash Flood | — | — | — | — | — | County |
| 1 Sep 2016 | Flash Flood | — | — | — | — | — | County |
| 10 Aug 2016 | Flash Flood | — | — | — | — | — | County |
| 22 Sep 2014 | Flash Flood | — | $5K | — | — | — | County |
| 20 Sep 2013 | Flash Flood | — | — | — | — | — | County |
| 20 Sep 2013 | Flash Flood | — | — | — | — | — | County |
| 14 Sep 2013 | Flash Flood | — | — | — | — | — | County |
| 9 Sep 2013 | Flash Flood | — | — | — | — | — | County |
| 20 Aug 2013 | Flash Flood | — | — | — | — | — | County |
| 13 Aug 2013 | Flash Flood | — | — | — | — | — | County |
| 26 Jul 2013 | Flash Flood | — | — | — | — | — | County |
| 26 Jul 2013 | Flash Flood | — | — | — | — | — | County |
| 20 Jul 2013 | Flash Flood | — | — | — | — | — | County |
| 15 Jul 2013 | Flash Flood | — | — | — | — | — | County |
| 12 Jul 2013 | Flash Flood | — | — | — | — | — | County |
| 12 Jul 2013 | Flash Flood | — | — | — | — | — | County |
| 7 Jul 2013 | Flash Flood | — | — | — | — | — | County |
| 6 Jul 2013 | Flash Flood | — | — | — | — | — | County |
| 3 Jul 2013 | Flash Flood | — | — | — | — | — | County |
| 3 Jul 2013 | Flash Flood | — | — | — | — | — | County |
| 1 Jul 2013 | Flash Flood | — | — | — | — | — | County |
| 18 Aug 2012 | Flash Flood | — | — | — | — | — | County |
| 24 Jul 2011 | Flash Flood | — | — | — | — | — | County |
| 24 Jul 2011 | Flash Flood | — | — | — | — | — | County |
| 1 Aug 2010 | Flash Flood | — | — | — | — | — | County |
| 21 Jul 2010 | Flash Flood | — | — | — | — | — | County |
| 12 Jul 2010 | Flash Flood | — | — | — | — | — | County |
| 22 Jan 2010 | Flood | — | — | — | — | — | County |
| 31 Aug 2008 | Flash Flood | — | $2K | — | — | — | County |
| 20 Aug 2008 | Flash Flood | — | $2K | — | — | — | County |
| 20 Aug 2008 | Flash Flood | — | $5K | — | — | — | County |
| 27 Jul 2008 | Flash Flood | — | $5K | — | — | — | County |
| 28 Jan 2008 | Flood | — | $50K | — | — | — | County |
| 9 Sep 2007 | Flash Flood | — | — | — | — | — | County |
| 6 Aug 2007 | Flash Flood | — | — | — | — | — | County |
| 6 Aug 2007 | Flash Flood | — | $20K | — | — | — | County |
| 2 Aug 2007 | Flash Flood | — | — | — | — | — | County |
| 1 Aug 2007 | Flash Flood | — | — | — | — | — | County |
| 29 Jul 2007 | Flash Flood | — | $50K | — | — | — | County |
| 18 May 2007 | Flash Flood | — | $2K | — | — | — | County |
| 4 Sep 2006 | Flood | — | — | — | — | — | County |
| 17 Aug 2006 | Flash Flood | — | $20K | — | — | — | County |
| 15 Aug 2006 | Flash Flood | — | — | — | — | — | County |
| 14 Aug 2006 | Flash Flood | — | — | — | — | — | County |
| 14 Aug 2006 | Flash Flood | — | — | — | — | — | County |
| 13 Aug 2006 | Flash Flood | — | — | — | — | — | County |
| 4 Aug 2006 | Flash Flood | — | — | — | — | — | County |
| 3 Aug 2006 | Flash Flood | — | $5K | — | — | — | County |
| 28 Jul 2006 | Flash Flood | — | $80K | — | — | — | County |
| 26 Jul 2006 | Flash Flood | — | $50K | — | — | — | County |
| 7 Oct 2002 | Flash Flood | — | — | — | — | — | County |
| 11 Sep 2002 | Flash Flood | — | — | — | — | — | County |
| 1 Jul 2000 | Flash Flood | — | $50K | — | — | — | County |
| 13 Sep 1999 | Flash Flood | — | — | — | — | — | County |
| 20 Jul 1999 | Flash Flood | — | $100K | — | — | — | County |
| 24 Aug 1997 | Flash Flood | — | — | — | — | — | County |
| 5 Aug 1997 | Flash Flood | — | — | — | — | — | County |
Questions and answers
How many flood events has Grant County had?
69 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 Grant County?
25 Sep 2025 (Flash Flood). Records reach NCEI about 120 days after the month ends.
What was the most damaging flood event recorded in Grant County?
The flash flood of 20 Jul 1999, with property damage estimated by NCEI at $100K.
How does Grant County compare with New Mexico for flood?
1.7 events per 100 square miles against 1.5 statewide; the county holds 69 of the state's 1,880 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.