Natural hazards · Aldan

Aldan, PA natural hazards

Most of the natural-hazard damage FEMA expects in Aldan comes from inland flooding, and overall the risk is very low for a U.S. community. 5 federal disasters brought FEMA money into town.

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

Expected damage

How exposed is Aldan?

Very low

vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in Aldan to be higher than in 11% of U.S. communities, mostly from inland flooding.

Inland flooding48%Earthquakes12%Heat waves12%Tornadoes8%Cold waves8%Everything else13%

By hazard

What Aldan faces

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

Inland flooding

48% of expected damage

Well below average · higher than 18% of U.S. places

Recorded about 5 times a year in the area

Earthquakes

12% of expected damage

Above average · higher than 71% of U.S. places

Heat waves

12% of expected damage

Well below average · higher than 16% of U.S. places

Recorded about 11 times a year in the area

Tornadoes

8% of expected damage

Above average · higher than 50% of U.S. places

Cold waves

8% of expected damage

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

Recorded about once a year in the area

Lower here

HurricanesHailIce stormsWinter weatherLandslidesStrong windLightning

Not a risk here

Coastal floodingWildfireDroughtAvalanchesTsunamisVolcanic 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 Aldan flood?

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

of homes in flood zones
are insured

of all homes
are insured

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

Insurance rates: Delaware County.

Disasters that hit Aldan

5 federal disasters brought FEMA money here

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

Brought FEMA money into AldanDeclared for Delaware County only

2021

Remnants of Hurricane Ida

52 households applied for aid $98K aid approved

2011

Tropical Storm Lee

13 households applied for aid $20K aid approved

2011

Hurricane Irene

64 households applied for aid $37K aid approved

2004

Tropical Depression Ivan

1 household applied for aid $2K aid approved

2004

Severe Storms and Flooding

2 households applied for aid $4K aid approved

Delaware County has had 20 natural disasters declared since 1953, most often hurricanes and floods.

Around Aldan

Aldan and the towns around it

Very lowLowModerateHighVery high

Upper Darbymostly inland floodingLow

Clifton Heightsmostly inland floodingVery low

Aldanmostly inland floodingVery low

Collingdalemostly inland floodingVery low

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. Aldan covers 1 census tract, combined by population.

Money that reached townFlood claims are matched to Aldan’s own flood-insurance community; household aid to the registrant’s city; repair grants to the Borough of Aldan. 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 Aldan total about $823K 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.