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Bull Valley Illinois1Photo: Andy McMurray · CC BY 2.5
AHazard risk
Natural hazards in Bull Valley · FEMA

FEMA expects less hazard damage per building in Bull Valley than in 86% of U.S. towns, mostly from river and rain flooding

On FEMA’s National Risk Index, Bull Valley gets an A for hazard risk: lower expected damage per building than 86% of U.S. towns. Most of that expected damage is river and rain flooding (77%), then tornadoes (18%). FEMA’s files show no paid flood insurance claims here.

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

less than 86%of U.S. townsLess damageMoreExpected yearly damage per dollar of building, vs. the 21,298 U.S. towns we grade
By hazard

What Bull Valley 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
Below average · lower than 67% of U.S. census tracts
Recorded about once a year in the area

Tornadoes

18%of expected building damage
Well above average · higher than 82% of U.S. census tracts
Smaller shares here
 Hail Earthquakes Lightning Strong wind Ice storms Hurricanes Wildfire Winter storms 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 cold waves at 20% of Bull Valley’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.
Hazard risk grade

What’s behind Bull Valley’s grade

River and rain flooding is 77% of the building damage FEMA expects in Bull Valley, and Bull Valley’s rate of river and rain flooding damage is lower than 67% of U.S. census tracts. Next is tornadoes at 18% (higher than 82% of U.S. census tracts).

Where Bull Valley sits
Bull Valley
Least damageMiddleMost damage

A lower expected damage per building than 86% of U.S. towns (21,298).

Bull Valley’s residents live in 7 census tracts; FEMA’s figures are combined by where they live.

What drives the damage to buildings
River and rain flooding77%Tornadoes18%Everything else4%

In dollars, FEMA expects about $432K a year in losses across Bull Valley: $276K to buildings, the rest to people and crops.

A firm figure. It combines 7 census tracts by where Bull Valley’s residents live. FEMA’s model is an average year for today’s buildings, not a record: the claims and disasters below are the record.

How TownRatings grades hazard risk →

Flood insurance claims

Does Bull Valley flood? No paid flood claims on record

FEMA’s records show no paid flood insurance claims in Bull Valley. That’s not a promise: most homes don’t carry flood insurance, so small floods go unrecorded.

of homes in flood zones are insured
of all homes are insured
No community discount

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

Insurance rates: McHenry County.
Disasters

3 federal disasters brought FEMA money to Bull Valley

Disasters that paid out in Bull Valley itself (aid to households or repair grants to the Village of Bull Valley), newest first, with that year’s flood claims.

  1. 2011Severe Winter Storm and Snowstorm$10K to the Village of Bull Valley for repairs
  2. 2008Record Snow and Near Record Snow$9K to the Village of Bull Valley for repairs
  3. 2000Illinois Winter Snow Storms$2K to the Village of Bull Valley for repairs
Disasters declared, by decade
Paid out in Bull ValleyMcHenry County only

McHenry County has had 13 natural disasters declared by the President since 1953, most often winter storms, then floods. Not counted: the 2005 Hurricane Katrina evacuee emergency, which covered counties that took in evacuees.

Were you here?

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

Add to the Bull Valley archive →
Next door

Bull Valley and its neighbors

Bull Valley is 2nd of the 6 graded towns here, from least expected damage per building to most. Tap a town to see its hazards.

Lowest fifthSecondMiddleFourthHighest fifth
TownHazard riskMostly (buildings)Flood claims
WoodstockAless damage than 93%river and rain flooding14
Bull ValleyAless damage than 86%river and rain flooding0
Greenwood TownshipA−less damage than 82%river and rain flooding3
Wonder LakeA−less damage than 78%river and rain flooding1
McHenryC+more damage than 64%river and rain flooding47
McHenry TownshipC−more damage than 78%river and rain flooding173

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 Bull Valley 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 Bull Valley

Is Bull Valley at risk for natural disasters?

On FEMA’s National Risk Index, Bull Valley has lower expected damage per building than 86% of U.S. towns: A for hazard risk. Most of the expected damage is river and rain flooding (77%) and tornadoes (18%). This is FEMA’s model of an average year for today’s buildings, not a forecast.

Is Bull Valley 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 McHenry County, 19% of homes in mapped flood zones carry federal flood insurance, and 0.7% of all homes do.

How much is flood insurance in Bull Valley?

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

What was the biggest storm in Bull Valley?

By FEMA money that reached Bull Valley, Severe Winter Storm and Snowstorm (2011): $10K to the Village of Bull Valley for repairs.

Is Bull Valley at risk from river and rain flooding?

It is the largest share of the building damage FEMA expects here (77%), and Bull Valley’s rate for it is lower than 67% of U.S. census tracts.

Storm stories

Memories, warnings and help from neighbors in Bull Valley.

Town Square →
Start the conversation

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