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2025 Annual Fire Report

Fires in Riverdale, California

In 2025, fire departments serving Riverdale responded to 77 fire and hazmat incidents — from cooking fires to gas leaks to a single $150.0M building blaze. Here's the full picture.

Updated Sep 27, 2026 Grade C- Peak yr 2025 Fresno County 2,756 residents 0 reporting departments 329 5-yr
Total incidents
77
+10.0% vs 2024
Building fires
6
Residential 67% Other 33%
Property loss
$304.0M
$152.1M structure · $151.8M contents
Deaths & injuries
0 / 0
0 civilian deaths · 0 civ injuries · 0 firefighter injuries
01 The mix

What kinds of fires happen here?

Grass fire lead by count. Building fires lead by dollars. Together the top five categories make up about 57% of all calls.

77
Total Incidents
Grass fire 23 29.9%
Building fires 6 7.8%
Outside rubbish, trash or waste fire 6 7.8%
Outside rubbish fire, other 5 6.5%
Unauthorized burning 4 5.2%
All other categories 33 42.9%
02 Seasonality

When do fires happen?

Jun peaks. Feb dips. Watch for the typical fall climb starting in October.

Jan 3
Feb 1
Mar 7
Apr 7
May 16
Jun 17
Jul 5
Aug 4
Sep 7
Oct 1
Nov 5
Dec 4
Fewer
More
2b Five-year trend

Year over year in Riverdale

329 incidents 2021–2025. Peak year was 2025. $154.1M cumulative property loss. 1 civilian deaths.

YearIncidentsYoY 
2021 65 —
2022 47 -27.7%
2023 70 +48.9%
2024 70 +0.0%
2025 77 +10.0%
03 Cause of ignition

What sparks building fires?

For the 6 building fires Riverdale departments responded to in 2025, here's how they were classified once investigators were finished.

Unintentional
14%
3
Cause undetermined
29%
6
Intentional / arson
5%
1
Equipment / heat source failure
24%
5
Under investigation
0%
0
Act of nature (lightning)
28%
1
3b Where fires start

Where do fires start in Riverdale?

NFIRS Area of Origin (AREA_ORIG) for the 91 building fires investigators classified across 2021–2025. The room or location where ignition occurred — kitchens, bedrooms, exterior, vehicle areas — tells you where to focus prevention.

#Area of originCountShare 
1 Undetermined 23 25.3%
2 Engine area, running gear, wheel area 11 12.1%
3 Open area - outside; included are farmland, field 9 9.9%
4 Exterior, exposed surface 7 7.7%
5 Vehicle area, other 6 6.6%
6 Outside area, other 6 6.6%
7 Operator/passenger area of transportation equip. 5 5.5%
8 Other 3 3.3%
9 Wall assembly 3 3.3%
10 Cargo/trunk area - all vehicles 3 3.3%
11 All other areas 15 16.5%
3c What ignited it

What actually ignited the fire?

NFIRS Heat Source (HEAT_SOURC) — the physical thing that started it. Spark or ember from operating equipment, an open flame, smoking materials, or hot embers from a fireplace are the leading culprits nationwide. Here's the Riverdale mix.

#Heat sourceCountShare 
1 Undetermined 43 47.3%
2 Arcing 13 14.3%
3 Heat from direct flame, convection currents 7 7.7%
4 Heat spread from another fire, other 5 5.5%
5 Heat source: other 4 4.4%
6 Heat from powered equipment, other 4 4.4%
7 Radiated, conducted heat from operating equipment 3 3.3%
8 Chemical reaction 2 2.2%
9 Multiple heat sources including multiple ignitions 2 2.2%
10 Spark, ember or flame from operating equipment 1 1.1%
11 All other sources 7 7.7%
04 The biggest fires

8 fires · $152.0M in losses

Largest single-incident property losses reported by Riverdale departments in 2025. These 8 fires alone account for 100% of the city's annual total.

# Property loss Type Severity Status
1 $150,000,000 Aircraft fire Catastrophic Investigated
2 $1,500,000 Aircraft fire Major Investigated
3 $150,000 Building fires Significant Investigated
4 $100,000 Special outside fire, other Significant Investigated
5 $70,000 Aircraft fire Significant Investigated
6 $50,000 Building fires Significant Investigated
7 $50,000 Off-road vehicle or heavy equipment fire Significant Investigated
8 $50,000 Special outside fire, other Significant Investigated
05 How Riverdale compares

Riverdale vs California vs the nation

Per-capita rates let us compare apples to apples. Riverdale sits above the national average for incidents per resident.

27.94
Incidents per 1,000 residents
Riverdale
27.94
CA avg
5.32
US avg
7.48
2.18
Building fires per 1,000 residents
Riverdale
2.18
CA avg
0.32
US avg
0.85
0
Civilian fire deaths per million
Riverdale
0
CA avg
2.9
US avg
5.9
5c Wildfires nearby

Wildfires within 50 mi of Riverdale

Top 25 wildfires (1992+) in the FPA-FOD ignitions database, scaled by acres. 255,965 acres burned in this 50-mile radius. Each dot is a fire — bigger dots burned more land.

50 mi radius
YearCauseAcresDistance 
2017 Equipment and vehicle use 48,000 45.1 mi
1997 Missing data/not specified/undetermined 43,700 48.6 mi
2020 Missing data/not specified/undetermined 29,667 43.2 mi
1996 Power generation/transmission/distribution 19,839 30.4 mi
1996 Power generation/transmission/distribution 18,340 46.3 mi
2016 Arson/incendiarism 13,349 44.7 mi
2017 Missing data/not specified/undetermined 10,000 35.0 mi
2006 Natural 8,400 37.4 mi
2016 Equipment and vehicle use 7,050 43.4 mi
2017 Equipment and vehicle use 5,738 32.3 mi
1996 Arson/incendiarism 5,607 43.2 mi
2007 Recreation and ceremony 5,600 40.4 mi
5d Top ZIPs

Where in Riverdale do fires concentrate?

Top 6 ZIP codes by NFIRS incident count across 2021–2025. Each ZIP has its own fire profile — dive in for neighborhood-level context.

#ZIP5-yr incidents 
1 93656 307
2 93242 13
3 93624 4
4 93607 2
5 93609 2
6 93230 1
5e Peer cities

Cities similar to Riverdale

Six California cities with population within ±25% of Riverdale. Useful comparison targets — same state, similar size, different fire profile.

07 Stay prepared

Before the next Red Flag day.

A 30-minute weekend can cut your home's exposure substantially. These four checklists are a good starting point.

About this data

Numbers reflect incidents reported by participating fire departments to the National Fire Incident Reporting System (NFIRS) Public Data Release for calendar year 2025. NFIRS is voluntary — about 23,000 of roughly 30,000 US fire departments report — so totals are a strong indicator, not a complete census. Per-capita comparisons use 2023 ACS population estimates. Wildland fire data complements NFIRS with NIFC and USFS perimeters. Active-fire counts come from a dated NIFC snapshot, not a live feed.