Natural hazards · Alvin

Alvin, TX natural hazards

Most of the natural-hazard damage FEMA expects in Alvin comes from inland flooding, and overall the risk is high for a U.S. community. Flood insurance has paid 1,418 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 Alvin?

High

vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in Alvin to be higher than in 68% of U.S. communities, mostly from inland flooding and hurricanes.

Inland flooding48%Hurricanes26%Tornadoes15%Everything else10%

By hazard

What Alvin 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

Above average · higher than 68% of U.S. places

Recorded about 2 times a year in the area

Hurricanes

26% of expected damage

Well above average · higher than 90% of U.S. places

Recorded about once every 5 years in the area

Tornadoes

15% of expected damage

Above average · higher than 57% of U.S. places

Lower here

Coastal floodingHailIce stormsWinter weatherCold wavesHeat wavesWildfireEarthquakesLandslidesStrong windLightningDrought

Not a risk here

AvalanchesTsunamisVolcanic 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 Alvin flood?

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

1,418paid claims since 1978

$31.7Mpaid to owners

133homes flooded more than once

19782026

Biggest named events

Tropical Storm Claudette: 589 claims, $7.4M
Hurricane Harvey: 221 claims, $15.0M
Hurricane Ike: 74 claims, $1.6M

Homes that flooded again and again

Each house = 3 homes. ■ FEMA “severe repetitive loss” (30) ■ flooded 2+ times

of homes in flood zones
are insured

of all homes
are insured

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

Insurance rates: Brazoria County.

What’s been done with FEMA grants

11homes raised above flood level

7flood-prone properties bought out and cleared

Disasters that hit Alvin

10 federal disasters brought FEMA money here

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

Brought FEMA money into AlvinDeclared for Brazoria County only

2024

Hurricane Beryl

7,265 households applied for aid $9.4M aid approved $1.4M to the City of Alvin for repairs

2021

Severe Winter Storms

870 households applied for aid $620K aid approved $69K to the City of Alvin for repairs

2017

Hurricane Harvey

5,329 households applied for aid $14.5M aid approved $981K to the City of Alvin for repairs

2016

Severe Storms and Flooding

9 households applied for aid

2015

Severe Storms, Tornadoes, Straight-Line Winds and Flooding

38 households applied for aid $163K aid approved

2008

Hurricane Ike

7,101 households applied for aid $5.4M aid approved $4.1M to the City of Alvin for repairs

2005

Hurricane Rita

1,990 households applied for aid $512K aid approved $144K to the City of Alvin for repairs

2003

Hurricane Claudette

5 households applied for aid $14K aid approved

2002

Severe Storms, Tornadoes and Flooding

7 households applied for aid $25K aid approved

2001

Tx-Tropical Storm Allison-06-06-2001

$3K to the City of Alvin for repairs

Brazoria County has had 28 natural disasters declared since 1953, most often hurricanes and floods.

Around Alvin

Alvin and the towns around it

Very lowLowModerateHighVery high

Manvelmostly inland floodingHigh

Iowa Colonymostly inland floodingHigh

Pearlandmostly inland floodingHigh

Friendswoodmostly inland floodingHigh

Hitchcockmostly inland floodingHigh

Alvinmostly inland floodingHigh

Hillcrest Villagemostly inland floodingHigh

Rosharonmostly inland floodingHigh

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. Alvin covers 4 census tracts, combined by population.

Money that reached townFlood claims are matched to Alvin’s own flood-insurance community; household aid to the registrant’s city; repair grants to the City of Alvin. 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 Alvin total about $7.1M 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.