Natural hazards · San Mar

San Mar, MD natural hazards

Most of the natural-hazard damage FEMA expects in San Mar comes from inland flooding, and overall the risk is low for a U.S. community.

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

Expected damage

How exposed is San Mar?

Low

vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in San Mar to be higher than in 22% of U.S. communities, mostly from inland flooding.

Inland flooding63%Hurricanes13%Drought6%Tornadoes5%Everything else13%

By hazard

What San Mar faces

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

Inland flooding

63% of expected damage

Below average · higher than 37% of U.S. places

Recorded about 2 times a year in the area

Hurricanes

13% of expected damage

Well above average · higher than 81% of U.S. places

Recorded about once every 12 years in the area

Drought

6% of expected damage

Recorded about 2 times a year in the area

Tornadoes

5% of expected damage

Below average · higher than 47% of U.S. places

Recorded about once every 69 years in the area

Lower here

HailIce stormsWinter weatherCold wavesHeat wavesWildfireEarthquakesLandslidesStrong windLightning

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 San Mar flood?

FEMA's records show no paid flood insurance claims in San Mar.

of homes in flood zones
are insured

of all homes
are insured

No community discount. San Mar isn’t in FEMA’s Community Rating System, which cuts flood insurance up to 45% in towns that do extra flood-proofing.

Insurance rates: Washington County.

Disasters that hit San Mar

Federal disasters declared here

None of the disasters declared for Washington County shows FEMA aid or repair money reaching San Mar itself in FEMA’s records.

Brought FEMA money into San MarDeclared for Washington County only

Washington County has had 14 natural disasters declared since 1953, most often winter storms and hurricanes.

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. San Mar is smaller than a census tract, so it shares the figures of the tract around its center.

Money that reached townFlood claims are matched to San Mar’s own flood-insurance community; household aid to the registrant’s city; repair grants to San Mar. FEMA’s model follows property values, so a place that recently lost many homes can rate lower than it feels.

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.