Natural hazards · Harriman

Harriman, TN natural hazards

Most of the natural-hazard damage FEMA expects in Harriman comes from inland flooding, and overall the risk is high for a U.S. community. Flood insurance has paid 7 claims here since 1978. 10 federal disasters brought FEMA money into town.

FEMA National Risk Index, December 2025 · OpenFEMA claims, aid & declarations
Expected damage

How exposed is Harriman?

61
High
vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in Harriman to be higher than in 61% of U.S. communities, mostly from inland flooding and cold waves.

Inland flooding50%Cold waves22%Tornadoes10%Earthquakes9%Everything else9%
By hazard

What Harriman faces

Each hazard’s share of the damage FEMA expects here, and how that compares with the rest of the country.

Inland flooding

50% of expected damage
Well above average · higher than 76% of U.S. places
Recorded about once a year in the area

Cold waves

22% of expected damage
Above average · higher than 74% of U.S. places
Recorded about once every 2 years in the area

Tornadoes

10% of expected damage
Well above average · higher than 80% of U.S. places

Earthquakes

9% of expected damage
Well above average · higher than 79% of U.S. places

Lower here

HurricanesHailIce stormsWinter weatherHeat wavesWildfireLandslidesStrong windLightningDrought

Not a risk here

Coastal floodingAvalanchesTsunamisVolcanic activity
Flood risk changes street by street. Check a specific address on FEMA’s flood map, and ask about flood insurance before you buy.
Flood insurance claims

Does Harriman flood?

Every paid claim on a federal flood insurance policy in Harriman, from FEMA’s records.

7paid claims since 1978
$277Kpaid to owners
0homes flooded more than once
19782026
of homes in flood zones
are insured
of all homes
are insured
No community discount. Harriman isn’t in FEMA’s Community Rating System, which cuts flood insurance up to 45% in towns that do extra flood-proofing.
Insurance rates: Roane County.
Disasters that hit Harriman

10 federal disasters brought FEMA money here

Disasters the President declared that paid out in Harriman itself: aid to households, or repair grants to the City of Harriman.

Brought FEMA money into HarrimanDeclared for Roane County only
2026

Severe Winter Storm

$9K to the City of Harriman for repairs
2019

Severe Storms, Flooding, Landslides, and Mudslides

$7K to the City of Harriman for repairs
2017

Severe Storms, Straight-Line Winds, and Flooding

$115K to the City of Harriman for repairs
2015

Severe Winter Storm and Flooding

$12K to the City of Harriman for repairs
2014

Severe Storms, Tornadoes, Straight-Line Winds, and Flooding

$29K to the City of Harriman for repairs
2004

Severe Storms and Flooding

$6K to the City of Harriman for repairs
2003

Severe Storms, Tornadoes, and Flooding

14 households applied for aid $25K aid approved $180K to the City of Harriman for repairs
2003

Severe Storms and Flooding

$4K to the City of Harriman for repairs
2002

Severe Storms and Tornados

43 households applied for aid $62K aid approved
2002

Severe Storms and Flooding

$6K to the City of Harriman for repairs
Roane County has had 21 natural disasters declared since 1953, most often severe storms and floods.
About these numbers

How to read this page

An average, not a forecastFEMA’s National Risk Index estimates the damage 18 kinds of natural hazards cause in a typical year, from decades of records and models. A quiet decade can follow a bad year.
Compared by rate“Higher than N%” compares yearly damage as a share of what’s here, so a big city isn’t rated riskier just for having more buildings. Harriman covers 2 census tracts, combined by population.
Money that reached townFlood claims are matched to Harriman’s own flood-insurance community; household aid to the registrant’s city; repair grants to the City of Harriman. FEMA’s model follows property values, so a place that recently lost many homes can rate lower than it feels.

FEMA’s expected losses across Harriman total about $2.6M a year, counting buildings, people and crops.

Sources: FEMA National Risk Index (December 2025); OpenFEMA: NFIP redacted claims, multiple-loss properties, community status book and residential penetration rates, housing assistance (owners and renters), public assistance funded projects, hazard mitigation properties and disaster declarations. Census tracts: U.S. Census Bureau.

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Boundary source: https://tigerweb.geo.census.gov/arcgis/rest/services/TIGERweb/Places_CouSub_ConCity_SubMCD/MapServer/18 · 2025-01-01