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Flood in Calaveras County, California
25 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.
Calaveras County, California, has 25 flood events in the NCEI record since 1950, with at least one in 8 different years.
February is the busiest month, with 11 of the recorded events. The last 20 years account for 24 events against 1 in the 20 years before, a change that reflects reporting practice as much as weather.
The county holds 0.4% of the 7,136 flood events recorded in California; its 2.5 per 100 square miles compares with 4.6 statewide.
Compared with California
| Measure | Calaveras County | California | US |
|---|---|---|---|
| Flood events since 1950 | 25 | 7,136 | 183,559 |
| Per 100 square miles | 2.5 | 4.6 | 5.2 |
| Per 10,000 residents | 5.4 | 1.8 | 5.5 |
| Deaths recorded | 0 | 121 | 2,961 |
| Busiest month | February | January | June |
By year
Seasonality
4Feb
11Mar
3Apr
2May
0Jun
0Jul
0Aug
0Sep
0Oct
0Nov
0Dec
5
Recorded events
All 25 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 |
|---|---|---|---|---|---|---|---|
| 21 Apr 2026 | Flood | — | — | — | — | — | County |
| 4 Jan 2026 | Flood | — | — | — | — | — | County |
| 24 Dec 2025 | Flood | — | — | — | — | — | County |
| 24 Dec 2025 | Flood | — | — | — | — | — | County |
| 13 Feb 2025 | Flood | — | — | — | — | — | County |
| 13 Feb 2025 | Flood | — | — | — | — | — | County |
| 13 Feb 2025 | Flood | — | — | — | — | — | County |
| 13 Feb 2025 | Flood | — | — | — | — | — | County |
| 12 Mar 2023 | Flash Flood | — | — | — | — | — | County |
| 11 Mar 2023 | Flash Flood | — | $20K | — | — | — | County |
| 10 Mar 2023 | Flood | — | — | — | — | — | County |
| 14 Jan 2023 | Flood | — | — | — | — | — | County |
| 10 Jan 2023 | Flood | — | — | — | — | — | County |
| 10 Jan 2023 | Flood | — | — | — | — | — | County |
| 31 Dec 2022 | Flood | — | $100K | — | — | — | County |
| 31 Dec 2022 | Flood | — | — | — | — | — | County |
| 10 Dec 2022 | Flood | — | — | — | — | — | County |
| 5 Apr 2020 | Flood | — | — | — | — | — | County |
| 14 Feb 2019 | Flood | — | — | — | — | — | County |
| 14 Feb 2019 | Flash Flood | — | — | — | — | — | County |
| 14 Feb 2019 | Flood | — | — | — | — | — | County |
| 14 Feb 2019 | Flash Flood | — | — | — | — | — | County |
| 14 Feb 2019 | Flood | — | $500K | — | — | — | County |
| 9 Feb 2017 | Flood | — | $7.0M | — | — | — | County |
| 9 Feb 1999 | Flash Flood | — | $20K | — | — | — | County |
Questions and answers
How many flood events has Calaveras County had?
25 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 Calaveras County?
21 Apr 2026 (Flood). Records reach NCEI about 120 days after the month ends.
What was the most damaging flood event recorded in Calaveras County?
The flood of 9 Feb 2017, with property damage estimated by NCEI at $7.0M.
How does Calaveras County compare with California for flood?
2.5 events per 100 square miles against 4.6 statewide; the county holds 25 of the state's 7,136 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.