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Griggsville, Pike County, IllinoisPhoto: Darren Green · CC BY-SA 3.0
C+Hazard risk
Natural hazards in Griggsville Township · FEMA

On FEMA’s figures, Griggsville Township faces about as much hazard damage per building as the typical U.S. town, mostly from river and rain flooding

On FEMA’s National Risk Index, Griggsville Township gets a C+ for hazard risk: higher expected damage per building than 59% of U.S. towns. Most of that expected damage is river and rain flooding (80%). Flood insurance has paid 9 claims here since 1979.

Graded on FEMA’s expected yearly building damage per dollar of building value (NRI v1.20, December 2025), weighted by where residents live; flood claims are shown, not graded. How hazard risk is graded

more than 59%of U.S. townsLess damageMoreExpected yearly damage per dollar of building, vs. the 21,298 U.S. towns we grade
By hazard

What Griggsville 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

80%of expected building damage
Above average · higher than 72% of U.S. census tracts
Recorded about once a year in the area

Tornadoes

5%of expected building damage
Above average · higher than 61% of U.S. census tracts
Recorded about once every 6 years in the area
Smaller shares here
 Hail Earthquakes Strong wind Lightning top 0% Ice storms Hurricanes Winter storms Wildfire Cold waves Heat waves Landslides
FEMA models no building damage here
Coastal floodingAvalanchesTsunamisVolcanic activity
People, not buildings.Counting harm to people as well as buildings, FEMA’s model puts drought at 19% of Griggsville Township’s expected losses. Drought does 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.
Hazard risk grade

What’s behind Griggsville Township’s grade

River and rain flooding is 80% of the building damage FEMA expects in Griggsville Township, and Griggsville Township’s rate of river and rain flooding damage is higher than 72% of U.S. census tracts. Strong wind adds 4%, at a rate in the top 8% of U.S. census tracts.

Where Griggsville Township sits
Griggsville Township
Least damageMiddleMost damage

C+ higher expected damage per building than 59% of U.S. towns (21,298).

All of Griggsville Township’s residents live in one census tract; the figures are that tract’s.

What drives the damage to buildings
River and rain flooding80%Tornadoes5%Hail4%Everything else11%

In dollars, FEMA expects about $740K a year in losses across Griggsville Township: $194K to buildings, the rest to people and crops.

Shared tract.All of Griggsville Township’s 1,310 residents (2020 census) live in one census tract, which it shares with Griggsville city (1,097 residents) and Perry township (522 residents) and New Salem township (515 residents) and Perry village (314 residents) and Baylis village (172 residents) and Fairmount township (149 residents) and Chambersburg township (124 residents) and New Salem village (121 residents) and Flint township (89 residents) and Valley City village (14 residents). FEMA publishes its model by tract, so the rate and the hazard mix are the tract’s, the same for all of them. The flood claims below are the township’s own.
A shared figure. The grade describes the whole tract, not each street in it, and FEMA’s model is an average year for today’s buildings, not a record: the claims below are the record.

How TownRatings grades hazard risk →

Flood insurance claims

Does Griggsville Township flood? Rarely: 9 flood claims since 1979

Every paid claim on a federal flood insurance policy in Griggsville Township, from FEMA’s records: 12.7 per 1,000 homes, more than 78% of the 13,809 U.S. towns with a flood insurance record.

Paid flood claims, by year
1979: 1 claim1980: 0 claims1981: 0 claims1982: 1 claim1983: 1 claim1984: 0 claims1985: 3 claims1986: 2 claims1987: 0 claims1988: 0 claims1989: 0 claims1990: 0 claims1991: 0 claims1992: 0 claims1993: 0 claims1994: 0 claims1995: 1 claim1996: 0 claims1997: 0 claims1998: 0 claims1999: 0 claims2000: 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 claims197919851986
19792026
9
paid claims since 1979
$26K
paid to owners
0
homes flooded more than once
$3K
average claim
of homes in flood zones are insured
of all homes are insured
No community discount

Griggsville 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: Pike County.
Disasters

The storms Griggsville Township remembers

None of the 22 disasters declared for Pike County shows FEMA aid or repair money reaching Griggsville Township itself in FEMA’s records, so these are its biggest flood-claim years.

  1. 19853 flood claims paidThe year of Severe Storms and Flooding, declared for Pike County
  2. 19862 flood claims paidNo declaration for the county that year
  3. 19791 flood claims paidThe year of Severe Storms and Flooding, declared for Pike County
Disasters declared, by decade
Paid out in Griggsville TownshipPike County only

Pike County has had 22 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 Griggsville Township after a storm or flood belong in the town’s history. Add one, or share what you remember below.

Add to the Griggsville Township archive →
Next door

Griggsville Township and its neighbors

Griggsville Township has the lowest expected damage per building of the 1 graded towns here. Tap a town to see its hazards.

New Salem Township: not gradedNewburg Township: not gradedPerry Township: not gradedFlint Township: not gradedNew Salem TownshipNewburg TownshipPerry TownshipFlint TownshipGriggsville Township
Lowest fifthSecondMiddleFourthHighest fifth
TownHazard riskMostly (buildings)Flood claims
Griggsville TownshipC+more damage than 59%river and rain flooding9
New Salem Township—288 residents; we grade 1,000+
Newburg Township—not graded yet
Perry Township—310 residents; we grade 1,000+
Flint Township—12 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 Griggsville 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 ↗
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 Griggsville Township

Is Griggsville Township at risk for natural disasters?

On FEMA’s National Risk Index, Griggsville Township has higher expected damage per building than 59% of U.S. towns: C+ for hazard risk. Most of the expected damage is river and rain flooding (80%) and tornadoes (5%). The figures are for the one census tract the town shares with its neighbors. This is FEMA’s model of an average year for today’s buildings, not a forecast.

Does Griggsville Township flood?

Flood insurance has paid 9 claims in Griggsville Township since 1979, $26K in all, or 12.7 per 1,000 homes, more than 78% of U.S. towns with a flood insurance record.

Is Griggsville 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 Pike County, 10% of homes in mapped flood zones carry federal flood insurance, and 1.2% of all homes do.

How much is flood insurance in Griggsville Township?

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

Is Griggsville Township at risk from river and rain flooding?

It is the largest share of the building damage FEMA expects here (80%), and Griggsville Township’s rate for it is higher than 72% of U.S. census tracts.

Storm stories

Memories, warnings and help from neighbors in Griggsville Township.

Town Square →
Start the conversation

Sources: FEMA National Risk Index v1.20 (December 2025), census-tract table, combined by where Griggsville 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.