San Joaquin, CA
San Joaquin County in California has 13 FEMA disaster declarations on record covering 1964–2023, most recently Severe Winter Storms, Flooding, Landslides, and Mudslides on Mar 10, 2023 (DR-3592). Its flood risk grade is B (Moderate risk), ranking #123 of 3,277 U.S. counties, with 17 NFIP flood insurance claims totaling $1,095,649 in payouts. Flood risk is relatively low compared to the national average.
FEMA Disaster Declarations in San Joaquin County
The 13 most recent federally declared disasters affecting San Joaquin County, CA (1964–2023). Total declarations on record: 13.
| Declared | Incident Type | Title | FEMA Disaster # |
|---|---|---|---|
| Mar 10, 2023 | Flood | Severe Winter Storms, Flooding, Landslides, and Mudslides | DR-3592 |
| Jan 14, 2023 | Flood | Severe Winter Storms, Flooding, Landslides, and Mudslides | DR-4683 |
| Jan 9, 2023 | Flood | Severe Winter Storms, Flooding, and Mudslides | DR-3591 |
| Apr 1, 2017 | Flood | Severe Winter Storms, Flooding, and Mudslides | DR-4308 |
| Sep 13, 2005 | Hurricane | Hurricane Katrina Evacuation | DR-3248 |
| Feb 21, 1986 | Flood | Severe Storms & Flooding | DR-758 |
| Feb 9, 1983 | Coastal Storm | Coastal Storms, Floods, Slides & Tornadoes | DR-677 |
| Sep 24, 1982 | Flood | Levee Break | DR-669 |
| Jan 7, 1982 | Flood | Severe Storms, Flood, Mudslides & High Tide | DR-651 |
| Oct 2, 1980 | Flood | Levee Break & Flooding | DR-633 |
| Feb 1, 1980 | Coastal Storm | Torrential Rain, High Tide & Winds | DR-3078 |
| Jan 26, 1969 | Flood | Severe Storms & Flooding | DR-253 |
| Dec 24, 1964 | Flood | Heavy Rains & Flooding | DR-183 |
Score Breakdown
The composite score of 22 is calculated from four weighted factors. See our methodology for details.
Other Counties in California
| County | Grade | Score | Claims | Disasters |
|---|---|---|---|---|
| Contra Costa | B | 21 | 30 | 11 |
| Santa Cruz | B | 21 | 69 | 10 |
| Sonoma | B | 21 | 147 | 11 |
| El Dorado | A | 20 | 16 | 9 |
| Shasta | A | 20 | 10 | 9 |
| Tulare | A | 20 | 21 | 9 |
More Counties in California
Frequently Asked Questions
How many FEMA disaster declarations does San Joaquin County, CA have?
San Joaquin County, CA has 13 federal disaster declarations on FEMA record (1964–2023). The 5 most recent are: Severe Winter Storms, Flooding, Landslides, and Mudslides (declared Mar 10, 2023, DR-3592); Severe Winter Storms, Flooding, Landslides, and Mudslides (declared Jan 14, 2023, DR-4683); Severe Winter Storms, Flooding, and Mudslides (declared Jan 9, 2023, DR-3591); Severe Winter Storms, Flooding, and Mudslides (declared Apr 1, 2017, DR-4308); Hurricane Katrina Evacuation (declared Sep 13, 2005, DR-3248). Counts include flood, severe storm, hurricane, and coastal storm declarations from the OpenFEMA DisasterDeclarationsSummaries dataset.
What is the flood risk grade for San Joaquin County, CA?
San Joaquin County is graded B (composite score 22/100, moderate risk). It ranks #123 of 3,277 U.S. counties for flood risk in our scoring model. The grade combines NFIP claims density (40%), disaster frequency (25%), claim severity (20%), and year-over-year trend (15%).
How many NFIP flood insurance claims have been filed in San Joaquin County?
17 NFIP flood insurance claims have been filed in San Joaquin County, CA, totaling $1,095,649 in payouts. The average claim is $64,450. Source: FEMA FimaNfipClaims v2 dataset.
Has San Joaquin County, CA had any recent flood disasters?
Yes. The most recent FEMA declaration affecting San Joaquin County was Severe Winter Storms, Flooding, Landslides, and Mudslides on Mar 10, 2023 (DR-3592). The county has 13 declared disasters in the OpenFEMA record covering 1964–2023.
The this entity record above pulls directly from FEMA OpenFEMA datasets including the National Flood Hazard Layer and NFIP claims. What follows is the per-entity context — how this entity sits in the broader U.S. flood risk, NFIP claims, and disaster declarations distribution and which underlying factors drive the headline numbers.
Every number on this page links back to FEMA OpenFEMA datasets including the National Flood Hazard Layer and NFIP claims; the methodology page describes the inputs, refresh cadence, and known limitations of the underlying data product.
Practical use of this page is in combination with the comparison and ranking pages elsewhere on the site, which surface the same data for this entity’s peers within U.S. ZIPs, counties, and states. A single-entity reading without peer context can be misleading when an entity is an outlier on one axis but typical on another.
Source: FEMA OpenFEMA datasets, 2026.