On FEMA’s figures, Mack faces less hazard damage per building than 82% of U.S. towns, mostly from river and rain flooding
On FEMA’s National Risk Index, Mack gets an A− for hazard risk: lower expected damage per building than 82% of U.S. towns, #424 of 993 in Ohio. Most of that expected damage is river and rain flooding (67%), then tornadoes (25%). Flood insurance has paid 7 claims here since 1982.
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 Mack 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
Tornadoes
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 Mack’s grade
River and rain flooding is 67% of the building damage FEMA expects in Mack, and Mack’s rate of river and rain flooding damage is lower than 74% of U.S. census tracts. Tornadoes add 25%, at a rate in the top 5% of U.S. census tracts.
A− #424 of 993 in Ohio; lower expected damage per building than 82% of U.S. towns (21,298).
Mack’s residents live in 4 census tracts; FEMA’s figures are combined by where they live.
The typical Ohio town has lower expected damage than 79% of U.S. towns; within the state, Mack has less expected damage per building than 57% of Ohio towns.
In dollars, FEMA expects about $2.7M a year in losses across Mack: $1.6M to buildings, the rest to people and crops.
Does Mack flood? Rarely: 7 flood claims since 1982
Every paid claim on a federal flood insurance policy in Mack, from FEMA’s records: 1.6 per 1,000 homes, fewer than 67% of the 13,809 U.S. towns with a flood insurance record.
Mack isn’t in FEMA’s Community Rating System, which cuts flood insurance up to 45% in towns that do extra flood-proofing.
Insurance rates: Hamilton County.The storms Mack remembers
None of the 16 disasters declared for Hamilton County shows FEMA aid or repair money reaching Mack itself in FEMA’s records, so these are its biggest flood-claim years.
- 19823 flood claims paidNo declaration for the county that year
- 20112 flood claims paidThe year of Severe Storms and Flooding, declared for Hamilton County
- 20171 flood claims paidNo declaration for the county that year
Hamilton County has had 16 natural disasters declared by the President since 1953, most often severe storms, then floods. Not counted: the 2005 Hurricane Katrina evacuee emergency, which covered counties that took in evacuees.
Old photos of Mack after a storm or flood belong in the town’s history. Add one, or share what you remember below.
Add to the Mack archive →Mack and its neighbors
Mack is 3rd of the 9 graded towns here, from least expected damage per building to most. Tap a town to see its hazards.
| Town | Hazard risk | Mostly (buildings) | Flood claims |
|---|---|---|---|
| Delhi Township | Aless damage than 91% | river and rain flooding | 7 |
| Bridgetown | A−less damage than 82% | river and rain flooding | 2 |
| Mack | A−less damage than 82% | river and rain flooding | 7 |
| Covedale | A−less damage than 79% | river and rain flooding | 2 |
| Cincinnati | A−less damage than 78% | river and rain flooding | 723 |
| Green Township | B+less damage than 74% | river and rain flooding | 29 |
| Dent | B−more damage than 51% | river and rain flooding | 8 |
| Miami Township | B−more damage than 53% | river and rain flooding | 51 |
| Miami Heights | B−more damage than 53% | river and rain flooding | — |
| Addyston | — | 904 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.
Get ready for what Mack 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.
- 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.
- 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 Mack
Is Mack at risk for natural disasters?
On FEMA’s National Risk Index, Mack has lower expected damage per building than 82% of U.S. towns: A− for hazard risk, #424 of 993 in Ohio. Most of the expected damage is river and rain flooding (67%) and tornadoes (25%). This is FEMA’s model of an average year for today’s buildings, not a forecast.
Does Mack flood?
Flood insurance has paid 7 claims in Mack since 1982, $152K in all, or 1.6 per 1,000 homes, fewer than 67% of U.S. towns with a flood insurance record.
Is Mack 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 Hamilton County, 24% of homes in mapped flood zones carry federal flood insurance, and 0.4% of all homes do.
How much is flood insurance in Mack?
FEMA’s Community Rating System list shows no discount for Mack’s flood program. Premiums depend on the building; policies usually start 30 days after you buy, so get a quote early.
Is Mack at risk from river and rain flooding?
It is the largest share of the building damage FEMA expects here (67%), and Mack’s rate for it is lower than 74% of U.S. census tracts.
Storm stories
Memories, warnings and help from neighbors in Mack.
Sources: FEMA National Risk Index v1.20 (December 2025), census-tract table, combined by where Mack’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.