FEMA expects more hazard damage per building in Montalvin Manor than in 93% of U.S. towns, mostly from earthquakes
On FEMA’s National Risk Index, Montalvin Manor gets a D for hazard risk: higher expected damage per building than 93% of U.S. towns. Most of that expected damage is earthquakes (62%), then river and rain flooding (38%). 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 Montalvin Manor faces
Each hazard’s share of the building damage FEMA expects here, and how its rate compares with the rest of the country.
Earthquakes
River and rain flooding
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 Montalvin Manor’s grade
Earthquakes are 62% of the building damage FEMA expects in Montalvin Manor, and Montalvin Manor’s rate of earthquakes damage is in the top 3% of U.S. census tracts. Next is river and rain flooding at 38% (higher than 76% of U.S. census tracts).
D higher expected damage per building than 93% of U.S. towns (21,298).
All of Montalvin Manor’s residents live in one census tract; the figures are that tract’s.
In dollars, FEMA expects about $1.4M a year in losses across Montalvin Manor: $1.0M to buildings, the rest to people and crops.
Does Montalvin Manor flood? No paid flood claims on record
FEMA’s records show no paid flood insurance claims in Montalvin Manor. That’s not a promise: most homes don’t carry flood insurance, so small floods go unrecorded.
Montalvin Manor isn’t in FEMA’s Community Rating System, which cuts flood insurance up to 45% in towns that do extra flood-proofing.
Insurance rates: Contra Costa County.The storms Montalvin Manor remembers
None of the 17 disasters declared for Contra Costa County shows FEMA aid or repair money reaching Montalvin Manor itself in FEMA’s records, so these are its biggest flood-claim years.
Contra Costa County has had 17 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.
Montalvin Manor and its neighbors
Montalvin Manor is 3rd of the 4 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 |
|---|---|---|---|
| Tara Hills | Dmore damage than 92% | earthquakes | — |
| Bayview | Dmore damage than 93% | earthquakes | — |
| Montalvin Manor | Dmore damage than 93% | earthquakes | 0 |
| Richmond | Dmore damage than 94% | earthquakes | 36 |
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 Montalvin Manor faces
A short kit for the hazards that drive the building damage here, what to check before you buy, and where neighbors get alerts.
- Drop, cover and hold on.
- Strap tall furniture and the water heater to the wall.
- Know how to shut off the gas.
- 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.
- 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 Montalvin Manor
Is Montalvin Manor at risk for natural disasters?
On FEMA’s National Risk Index, Montalvin Manor has higher expected damage per building than 93% of U.S. towns: D for hazard risk. Most of the expected damage is earthquakes (62%) and river and rain flooding (38%). 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 Montalvin Manor 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 Contra Costa County, 28% of homes in mapped flood zones carry federal flood insurance, and 0.9% of all homes do.
How much is flood insurance in Montalvin Manor?
FEMA’s Community Rating System list shows no discount for Montalvin Manor’s flood program. Premiums depend on the building; policies usually start 30 days after you buy, so get a quote early.
Is Montalvin Manor at risk from earthquakes?
It is the largest share of the building damage FEMA expects here (62%), and Montalvin Manor’s rate for it is in the top 3% of U.S. census tracts.
Storm stories
Memories, warnings and help from neighbors in Montalvin Manor.
Sources: FEMA National Risk Index v1.20 (December 2025), census-tract table, combined by where Montalvin Manor’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.