Photo: Quarterczar at English Wikipedia · Public domainOn FEMA’s figures, Brock Hall faces less hazard damage per building than 96% of U.S. towns, mostly from river and rain flooding
On FEMA’s National Risk Index, Brock Hall gets an A+ for hazard risk: lower expected damage per building than 96% of U.S. towns, #147 of 261 in Maryland. Most of that expected damage is river and rain flooding (77%), then hurricanes (11%). Flood insurance has paid 19 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 Brock 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
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 Brock Hall’s grade
River and rain flooding is 77% of the building damage FEMA expects in Brock Hall, and Brock Hall’s rate of river and rain flooding damage is lower than 82% of U.S. census tracts. Next is hurricanes at 11% (higher than 72% of U.S. census tracts).
A+ #147 of 261 in Maryland; lower expected damage per building than 96% of U.S. towns (21,298).
Brock Hall’s residents live in 4 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, Brock Hall has more expected damage per building than 56% of Maryland towns.
In dollars, FEMA expects about $2.4M a year in losses across Brock Hall: $2.0M to buildings, the rest to people and crops.
Does Brock Hall flood? Sometimes: 19 flood claims since 1979
Every paid claim on a federal flood insurance policy in Brock Hall, from FEMA’s records: 4.2 per 1,000 homes, more than 56% of the 13,809 U.S. towns with a flood insurance record.
- Hurricane Irene7 claims · $142K
- Hurricane Sandy1 claim · $7K
Brock 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: Prince George's County.The storms Brock Hall remembers
None of the 15 disasters declared for Prince George's County shows FEMA aid or repair money reaching Brock Hall itself in FEMA’s records, so these are its biggest flood-claim years.
- 201113 flood claims paidThe year of Remnants of Tropical Storm Lee, declared for Prince George's County
- 20082 flood claims paidNo declaration for the county that year
- 19791 flood claims paidNo declaration for the county that year
Prince George's County has had 15 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 Brock Hall after a storm or flood belong in the town’s history. Add one, or share what you remember below.
Add to the Brock Hall archive →Brock Hall and its neighbors
Brock Hall is 6th of the 8 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 |
|---|---|---|---|
| Queen Anne | A+among the lowest damage | river and rain flooding | 1 |
| Marlboro Meadows | A+among the lowest damage | river and rain flooding | 1 |
| Bowie | A+less damage than 98% | river and rain flooding | 6 |
| Queensland | A+less damage than 98% | river and rain flooding | 2 |
| Brown Station | A+less damage than 96% | river and rain flooding | — |
| Brock Hall | A+less damage than 96% | river and rain flooding | 19 |
| Marlboro Village | Aless damage than 90% | river and rain flooding | 5 |
| Kettering | Aless damage than 88% | river and rain flooding | 5 |
| Upper Marlboro | — | 683 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 Brock 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.
- 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 Brock Hall
Is Brock Hall at risk for natural disasters?
On FEMA’s National Risk Index, Brock Hall has lower expected damage per building than 96% of U.S. towns: A+ for hazard risk, #147 of 261 in Maryland. Most of the expected damage is river and rain flooding (77%) and hurricanes (11%). This is FEMA’s model of an average year for today’s buildings, not a forecast.
Does Brock Hall flood?
Flood insurance has paid 19 claims in Brock Hall since 1979, $319K in all, or 4.2 per 1,000 homes, more than 56% of U.S. towns with a flood insurance record. The most claims came from Hurricane Irene (7).
Is Brock 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 Prince George's County, 0.9% of all homes carry federal flood insurance.
How much is flood insurance in Brock Hall?
FEMA’s Community Rating System list shows no discount for Brock Hall’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 Brock Hall?
By flood claims, Hurricane Irene: 7 paid, $142K.
Is Brock Hall at risk from river and rain flooding?
It is the largest share of the building damage FEMA expects here (77%), and Brock Hall’s rate for it is lower than 82% of U.S. census tracts.
Storm stories
Memories, warnings and help from neighbors in Brock Hall.
Sources: FEMA National Risk Index v1.20 (December 2025), census-tract table, combined by where Brock 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.