Oakland Mills Blacksmith House and Shop · Photo: FlugKerl2 · CC BY-SA 3.0FEMA expects less hazard damage per building in Columbia than almost anywhere in the U.S., mostly from river and rain flooding
On FEMA’s National Risk Index, Columbia gets an A+ for hazard risk: among the lowest expected damage per building of U.S. towns, #33 of 261 in Maryland. Most of that expected damage is river and rain flooding (73%), then hurricanes (11%). Flood insurance has paid 25 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 stands out about Columbia’s natural hazards
From FEMA’s model and FEMA’s records, below.
What Columbia 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
Hurricanes
Earthquakes
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 Columbia’s grade
River and rain flooding is 73% of the building damage FEMA expects in Columbia, and Columbia’s rate of river and rain flooding damage is lower than 93% of U.S. census tracts. Next is hurricanes at 11% (higher than 68% of U.S. census tracts).
A+ #33 of 261 in Maryland; among the lowest expected damage per building of U.S. towns (21,298).
Columbia’s residents live in 21 census tracts; FEMA’s figures are combined by where they live.
The typical Maryland town has lower expected damage than 97% of U.S. towns; within the state, Columbia has less expected damage per building than 88% of Maryland towns.
Among the 400 U.S. cities of 100,000 or more, Columbia has lower expected damage per building than 100% (#2 of 400). Because it is so big, its total expected yearly loss, $14.9M, is the 396th largest of those 400.
Does Columbia flood? Sometimes: 25 flood claims since 1979
Every paid claim on a federal flood insurance policy in Columbia, from FEMA’s records: 0.6 per 1,000 homes, fewer than 88% of the 13,809 U.S. towns with a flood insurance record.
- The Mid-spring storms1 claim · $1K
Columbia isn’t in FEMA’s Community Rating System, which cuts flood insurance up to 45% in towns that do extra flood-proofing.
Insurance rates: Howard County.1 federal disaster brought FEMA money to Columbia
Disasters that paid out in Columbia itself (aid to households or repair grants to Columbia), newest first, with that year’s flood claims.
- 2003Hurricane Isabel52 households applied for aid$33K aid approved
Howard County has had 18 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.
Old photos of Columbia after a storm or flood belong in the town’s history. Add one, or share what you remember below.
Add to the Columbia archive →Columbia and its neighbors
Columbia is 4th of the 7 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 |
|---|---|---|---|
| Savage | A+among the lowest damage | river and rain flooding | — |
| Jessup | A+among the lowest damage | river and rain flooding | — |
| North Laurel | A+among the lowest damage | river and rain flooding | 6 |
| Columbia | A+among the lowest damage | river and rain flooding | 25 |
| Ilchester | A+among the lowest damage | river and rain flooding | 1 |
| Ellicott City | A+among the lowest damage | river and rain flooding | 212 |
| Scaggsville | A+less damage than 98% | river and rain flooding | 1 |
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 Columbia 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.
- The season runs June through November and peaks from mid-August to mid-October.
- Bring in porch furniture and anything the wind can throw.
- Fill the gas tank and charge phones before the storm arrives.
- Drop, cover and hold on.
- Strap tall furniture and the water heater to the wall.
- Know how to shut off the gas.
- 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 Columbia
Is Columbia at risk for natural disasters?
On FEMA’s National Risk Index, Columbia has among the lowest expected damage per building of U.S. towns: A+ for hazard risk, #33 of 261 in Maryland. Most of the expected damage is river and rain flooding (73%) and hurricanes (11%). This is FEMA’s model of an average year for today’s buildings, not a forecast.
Does Columbia flood?
Flood insurance has paid 25 claims in Columbia since 1979, $116K in all, or 0.6 per 1,000 homes, fewer than 88% of U.S. towns with a flood insurance record. The most claims came from Mid-spring storms (1).
Is Columbia 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 Howard County, 94% of homes in mapped flood zones carry federal flood insurance, and 0.8% of all homes do.
How much is flood insurance in Columbia?
FEMA’s Community Rating System list shows no discount for Columbia’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 Columbia?
By FEMA money that reached Columbia, Hurricane Isabel (2003): 52 households applied for aid, $33K approved. By flood claims, Mid-spring storms: 1 paid, $1K.
Is Columbia at risk from river and rain flooding?
It is the largest share of the building damage FEMA expects here (73%), and Columbia’s rate for it is lower than 93% of U.S. census tracts.
Storm stories
Memories, warnings and help from neighbors in Columbia.
Sources: FEMA National Risk Index v1.20 (December 2025), census-tract table, combined by where Columbia’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.