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–Not graded
Natural hazards in Onstad Township · FEMA

Storms, floods and disasters in Onstad Township

Onstad Township isn’t graded for hazard risk: Onstad Township has 64 residents; we grade towns of 1,000 or more. Flood insurance has paid 3 claims here since 1997.

Flood claims
3
paid since 1997 · $56K
Disasters paid out here
0
of 26 declared for Polk County
By hazard

What Onstad Township faces

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

River and rain flooding

77%of expected building damage
Above average · higher than 77% of U.S. census tracts
Recorded about 2 times a year in the area

Tornadoes

8%of expected building damage
Well above average · higher than 81% of U.S. census tracts
Recorded about once every 6 years in the area

Wildfire

8%of expected building damage
Well above average · in the top 5% of U.S. census tracts
Smaller shares here
 Strong wind Hail Winter storms top 1% Ice storms Lightning Earthquakes Cold waves Heat waves Landslides
FEMA models no building damage here
Coastal floodingHurricanesAvalanchesTsunamisVolcanic activity
People, not buildings.Counting harm to people as well as buildings, FEMA’s model puts cold waves at 26% of Onstad Township’s expected losses. Cold waves do little damage to buildings (0.0%), so they aren’t part of the grade.

Shares are of FEMA’s expected building damage, the measure the grade uses; ranks compare each hazard’s building-damage rate with all 85,154 U.S. census tracts. In FEMA’s terms, river and rain flooding is FEMA’s “Inland Flooding” (rivers and streams overflowing their banks, or rain overwhelming drainage). FEMA defines coastal flooding as high or rising tides and storm surge, so surge damage is counted there. Drought isn’t listed: FEMA counts its losses in crops only.

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 Onstad Township flood? Rarely: 3 flood claims since 1997

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

Paid flood claims, by year
1997: 1 claim1998: 1 claim1999: 1 claim2000: 0 claims2001: 0 claims2002: 0 claims2003: 0 claims2004: 0 claims2005: 0 claims2006: 0 claims2007: 0 claims2008: 0 claims2009: 0 claims2010: 0 claims2011: 0 claims2012: 0 claims2013: 0 claims2014: 0 claims2015: 0 claims2016: 0 claims2017: 0 claims2018: 0 claims2019: 0 claims2020: 0 claims2021: 0 claims2022: 0 claims2023: 0 claims2024: 0 claims2025: 0 claims2026: 0 claims199719981999
19972026
3
paid claims since 1997
$56K
paid to owners
0
homes flooded more than once
$19K
average claim
of all homes are insured
No community discount

Onstad Township isn’t in FEMA’s Community Rating System, which cuts flood insurance up to 45% in towns that do extra flood-proofing.

Insurance rates: Polk County.
Disasters

The storms Onstad Township remembers

None of the 26 disasters declared for Polk County shows FEMA aid or repair money reaching Onstad Township itself in FEMA’s records, so these are its biggest flood-claim years.

  1. 19971 flood claims paidThe year of Severe Flooding, High Winds,severe Storms, declared for Polk County
  2. 19981 flood claims paidNo declaration for the county that year
  3. 19991 flood claims paidThe year of Severe Ice Storm and Flooding, declared for Polk County
Disasters declared, by decade
Paid out in Onstad TownshipPolk County only

Polk County has had 26 natural disasters declared by the President since 1953, most often floods, then severe storms. Not counted: the 2005 Hurricane Katrina evacuee emergency, which covered counties that took in evacuees.

Were you here?

Old photos of Onstad Township after a storm or flood belong in the town’s history. Add one, or share what you remember below.

Add to the Onstad Township archive →
Next door

Onstad Township and its neighbors

How expected damage per building compares across the town line. Tap a town to see its hazards.

Kertsonville Township: not gradedLiberty Township: not gradedGodfrey Township: not gradedRussia Township: not gradedKertsonville TownshipLiberty TownshipGodfrey TownshipRussia TownshipOnstad Township
Lowest fifthSecondMiddleFourthHighest fifth
TownHazard riskMostly (buildings)Flood claims
Kertsonville Township—81 residents; we grade 1,000+
Liberty Township—126 residents; we grade 1,000+
Godfrey Township—216 residents; we grade 1,000+
Russia Township—52 residents; we grade 1,000+

Hazard risk = FEMA’s expected yearly building damage per dollar of building value, vs. the 21,298 U.S. towns we grade; the map is shaded by fifths of the same scale. Flood claims = paid federal flood insurance claims on record.

Be ready

Get ready for what Onstad Township faces

A short kit for the hazards that drive the building damage here, what to check before you buy, and where neighbors get alerts.

When the river rises
  • Turn around at flooded roads: a foot of moving water can carry off a car.
  • Flood insurance usually takes 30 days to start, so buy it before the forecast.
  • Keep papers and medicines up high, in a grab-and-go bag.
More from Ready.gov ↗
Tornado warnings
  • Pick your spot now: the lowest floor, an inside room, no windows.
  • A watch means be ready; a warning means take cover now.
  • Keep shoes and a flashlight by the bed.
More from Ready.gov ↗
Wildfire
  • Clear dead leaves and brush within 5 feet of the house.
  • Sign up for local alerts and know two ways out.
  • Keep N95 masks for smoky days.
More from Ready.gov ↗
Before you buy or rent
  • Look up the address on FEMA’s flood map.
  • Ask the seller or landlord whether it has ever flooded, and what flood insurance costs there.
  • Get a flood insurance quote early: policies usually start 30 days after you buy.
When a storm is coming
Forecast and alertsWeather →911, the nearest ERSafety →

Know where neighbors sign up for alerts? Add it to the Handbook so everyone has it.

Questions about natural hazards in Onstad Township

Does Onstad Township flood?

Flood insurance has paid 3 claims in Onstad Township since 1997, $56K in all.

Is Onstad Township in a flood zone?

Flood zones are drawn street by street, so the answer depends on the address: look it up on FEMA’s flood map. In Polk County, 0.5% of all homes carry federal flood insurance.

How much is flood insurance in Onstad Township?

FEMA’s Community Rating System list shows no discount for Onstad Township’s flood program. Premiums depend on the building; policies usually start 30 days after you buy, so get a quote early.

Storm stories

Memories, warnings and help from neighbors in Onstad Township.

Town Square →
Start the conversation

Sources: FEMA National Risk Index v1.20 (December 2025), census-tract table, combined by where Onstad Township’s residents lived in the 2020 census; 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. Homes: Census ACS 2020–24. Preparedness tips: Ready.gov. FEMA’s model is an average of expected damage, not a forecast. How hazard risk is graded.