Photo: Nyttend · Public domainFEMA puts Sullivan’s expected hazard damage per building above that of 77% of U.S. towns, mostly from river and rain flooding
On FEMA’s National Risk Index, Sullivan gets a C− for hazard risk: higher expected damage per building than 77% of U.S. towns, #612 of 768 in Illinois. Most of that expected damage is river and rain flooding (72%), then earthquakes (11%). Flood insurance has paid 2 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
What Sullivan 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
Earthquakes
Tornadoes
Hail
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.
What’s behind Sullivan’s grade
River and rain flooding is 72% of the building damage FEMA expects in Sullivan, and Sullivan’s rate of river and rain flooding damage is higher than 79% of U.S. census tracts. Strong wind adds 3%, at a rate in the top 10% of U.S. census tracts.
C− #612 of 768 in Illinois; higher expected damage per building than 77% of U.S. towns (21,298).
Sullivan’s residents live in 3 census tracts; FEMA’s figures are combined by where they live.
The typical Illinois town has higher expected damage than 54% of U.S. towns; within the state, Sullivan has more expected damage per building than 80% of Illinois towns.
In dollars, FEMA expects about $2.7M a year in losses across Sullivan: $1.7M to buildings, the rest to people and crops.
Does Sullivan flood? Rarely: 2 flood claims since 1979
Every paid claim on a federal flood insurance policy in Sullivan, from FEMA’s records: 1.1 per 1,000 homes, fewer than 77% of the 13,809 U.S. towns with a flood insurance record.
Sullivan isn’t in FEMA’s Community Rating System, which cuts flood insurance up to 45% in towns that do extra flood-proofing.
Insurance rates: Moultrie County.4 federal disasters brought FEMA money to Sullivan
Disasters that paid out in Sullivan itself (aid to households or repair grants to the City of Sullivan), newest first, with that year’s flood claims.
- 2023Severe Storms and Flooding$37K to the City of Sullivan for repairs
- 2010Severe Storms and Flooding$308K to the City of Sullivan for repairs
- 2002Severe Storms, Tornadoes and Flooding$10K to the City of Sullivan for repairs
- 1999Il-winter Storm 1/1/99$16K to the City of Sullivan for repairs
Moultrie County has had 7 natural disasters declared by the President since 1953, most often severe storms, then winter storms. Not counted: the 2005 Hurricane Katrina evacuee emergency, which covered counties that took in evacuees.
Old photos of Sullivan after a storm or flood belong in the town’s history. Add one, or share what you remember below.
Add to the Sullivan archive →Get ready for what Sullivan faces
A short kit for the hazards that drive the building damage here, what to check before you buy, and where neighbors get alerts.
- 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.
- Drop, cover and hold on.
- Strap tall furniture and the water heater to the wall.
- Know how to shut off the gas.
- 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.
- Park in a garage or under cover when storms are forecast.
- Stay away from windows while it falls.
- Photograph roof and car damage for your insurer.
- 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.
Know where neighbors sign up for alerts? Add it to the Handbook so everyone has it.
Questions about natural hazards in Sullivan
Is Sullivan at risk for natural disasters?
On FEMA’s National Risk Index, Sullivan has higher expected damage per building than 77% of U.S. towns: C− for hazard risk, #612 of 768 in Illinois. Most of the expected damage is river and rain flooding (72%) and earthquakes (11%). This is FEMA’s model of an average year for today’s buildings, not a forecast.
Does Sullivan flood?
Flood insurance has paid 2 claims in Sullivan since 1979, $6K in all, or 1.1 per 1,000 homes, fewer than 77% of U.S. towns with a flood insurance record.
Is Sullivan 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 Moultrie County, 21% of homes in mapped flood zones carry federal flood insurance, and 0.6% of all homes do.
How much is flood insurance in Sullivan?
FEMA’s Community Rating System list shows no discount for Sullivan’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 Sullivan?
By FEMA money that reached Sullivan, Severe Storms and Flooding (2010): $308K to the City of Sullivan for repairs.
Is Sullivan at risk from river and rain flooding?
It is the largest share of the building damage FEMA expects here (72%), and Sullivan’s rate for it is higher than 79% of U.S. census tracts.
Storm stories
Memories, warnings and help from neighbors in Sullivan.
Sources: FEMA National Risk Index v1.20 (December 2025), census-tract table, combined by where Sullivan’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.