Photo: Pubdog · Public domainFEMA puts Charlotte Hall’s expected hazard damage per building below that of 97% of U.S. towns, led by river and rain flooding
On FEMA’s National Risk Index, Charlotte Hall gets an A+ for hazard risk: lower expected damage per building than 97% of U.S. towns. Most of that expected damage is river and rain flooding (44%), then hurricanes (32%). 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
What Charlotte Hall 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
Strong wind
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 Charlotte Hall’s grade
River and rain flooding is 44% of the building damage FEMA expects in Charlotte Hall, and Charlotte Hall’s rate of river and rain flooding damage is lower than 98% of U.S. census tracts. Strong wind adds 8%, at a rate in the top 9% of U.S. census tracts.
A+ lower expected damage per building than 97% of U.S. towns (21,298).
All of Charlotte Hall’s residents live in one census tract; the figures are that tract’s.
In dollars, FEMA expects about $271K a year in losses across Charlotte Hall: $193K to buildings, the rest to people and crops.
Does Charlotte Hall flood? No paid flood claims on record
FEMA’s records show no paid flood insurance claims in Charlotte Hall. That’s not a promise: most homes don’t carry flood insurance, so small floods go unrecorded.
Charlotte Hall isn’t in FEMA’s Community Rating System, which cuts flood insurance up to 45% in towns that do extra flood-proofing.
Insurance rates: St. Mary's County.The storms Charlotte Hall remembers
None of the 13 disasters declared for St. Mary's County shows FEMA aid or repair money reaching Charlotte Hall itself in FEMA’s records, so these are its biggest flood-claim years.
St. Mary's County has had 13 natural disasters declared by the President since 1953, most often winter storms, then hurricanes and tropical storms. Not counted: the 2005 Hurricane Katrina evacuee emergency, which covered counties that took in evacuees.
Charlotte Hall and its neighbors
Charlotte Hall has the lowest expected damage per building of the 2 graded towns here. Tap a town to see its hazards.
| Town | Hazard risk | Mostly (buildings) | Flood claims |
|---|---|---|---|
| Charlotte Hall | A+less damage than 97% | river and rain flooding | 0 |
| Mechanicsville | Aless damage than 93% | river and rain flooding | — |
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 Charlotte Hall 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.
- Trim dead limbs over the house and driveway.
- Tie down trash cans and outdoor furniture.
- Stay clear of downed lines and call the utility.
- 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 Charlotte Hall
Is Charlotte Hall at risk for natural disasters?
On FEMA’s National Risk Index, Charlotte Hall has lower expected damage per building than 97% of U.S. towns: A+ for hazard risk. Most of the expected damage is river and rain flooding (44%) and hurricanes (32%). 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.
Is Charlotte Hall 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 St. Mary's County, 55% of homes in mapped flood zones carry federal flood insurance, and 2.4% of all homes do.
How much is flood insurance in Charlotte Hall?
FEMA’s Community Rating System list shows no discount for Charlotte Hall’s flood program. Premiums depend on the building; policies usually start 30 days after you buy, so get a quote early.
Is Charlotte Hall at risk from river and rain flooding?
It is the largest share of the building damage FEMA expects here (44%), and Charlotte Hall’s rate for it is lower than 98% of U.S. census tracts.
Storm stories
Memories, warnings and help from neighbors in Charlotte Hall.
Sources: FEMA National Risk Index v1.20 (December 2025), census-tract table, combined by where Charlotte Hall’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.