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2025 County Report

Fires in Lyman County, SD

In 2025, fire departments serving Lyman County responded to 10 fire and hazmat incidents — including a single $20K property loss. FEMA NRI rates wildfire risk here as High.

2,698 residents FIPS 46085 10 cities · 5 fire depts
Total incidents
10
146 across 5 years
Building fires
1
2 wildland
Property loss
$60K
$40K structure · $20K contents
Casualties
0 / 0
0 civ deaths · 0 civ inj · 0 FF inj
01 The mix

What kinds of fires happen here?

Fire, other lead by count. Top five categories make up about 100% of all calls.

10
Total Incidents
Fire, other 6 60.0%
Grass fire 2 20.0%
Building fires 1 10.0%
Passenger vehicle fire 1 10.0%
02 Seasonality

When do fires happen in Lyman County?

Mar peaks. Jan dips.

Jan 0
Feb 0
Mar 2
Apr 0
May 1
Jun 1
Jul 2
Aug 1
Sep 1
Oct 1
Nov 1
Dec 0
03 Five-year trend

Year over year in Lyman County

146 incidents from 2021 through 2025.

YearIncidents 
2021 68
2022 40
2023 15
2024 13
2025 10
04 Cause of ignition

What sparks building fires?

For the 1 building fires departments responded to in 2025, here's how investigators classified them.

Unintentional
100%
3
Cause undetermined
0%
0
Intentional / arson
0%
0
Equipment / heat source failure
0%
0
Under investigation
0%
0
Act of nature (lightning)
0%
0
05 The biggest fires

2 fires · $40K in losses

Largest single-incident property losses in Lyman County during 2025. These 2 fires alone account for 100% of the county's total.

#Property lossCityTypeSeverity
1 $20,000 Kennebec Building fires Significant
2 $20,000 Reliance Passenger vehicle fire Significant
06 How Lyman County compares

Lyman County vs SD vs the nation

Per-capita rates let us compare apples to apples.

3.71
Incidents per 1,000 residents
Lyman County
3.71
SD avg
5.75
US avg
7.15
0.37
Building fires per 1,000 residents
Lyman County
0.37
SD avg
0.72
US avg
0.82
0
Civilian fire deaths per million
Lyman County
0
SD avg
7.1
US avg
5.8
07 Cities in this county

Largest cities in Lyman County

10 cities mapped to FIPS 46085.

08 First responders

Busiest fire departments in Lyman County

5 departments report from this county.

Vivian
Vivian
FDID 45005 12 incidents 24 vol
Reliance
Reliance
FDID 45004 4 incidents 30 vol
Kennebec
Kennebec
FDID 45001 0 incidents 30 vol
Lower Brule
Lower Brule
FDID 45002 0 incidents 15 vol
Presho
Presho
FDID 45003 0 incidents 30 vol
09 Historical wildfires

Largest fires recorded in SD

Top 10 fire perimeters by acres burned (state-scoped fallback while we build out per-county polygons).

#NameYearAgencyAcres
1 Jasper 2000 NPS 82,295
2 Cottonwood CA 2016 USFS 41,370
3 Power Dam Road 2024 BIA 15,319
4 INDIAN CANYON 2016 USFS 14,297
5 Casino 2022 BIA 12,636
6 Myrtle 2012 NPS 9,944
7 Turkey Day 2022 BIA 5,945
8 Cold Brook WF 2015 NPS 5,444
9 SHIRTTAIL 1991 NPS 3,750
10 BENT RIM 2020 BIA 3,625

About this data

County-level NFIRS aggregates for 2025, plus 5-year totals across 2021–2025. NFIRS is voluntary — about 23,000 of roughly 30,000 US fire departments report — so totals are a strong indicator, not a complete census. Wildfire risk score (0–100) and Expected Annual Loss come from FEMA's National Risk Index. Drought class is the most recent USDM classification (D0 = abnormally dry through D4 = exceptional drought). Historical fire perimeters are sourced from the NIFC InterAgency Fire Perimeter History.