Photo: Generic1139 · CC BY-SA 3.0Storms, floods and disasters in Rosslyn Farms
Rosslyn Farms isn’t graded for hazard risk: Rosslyn Farms has 534 residents; we grade towns of 1,000 or more. Flood insurance has paid 2 claims here since 1979.
What Rosslyn Farms 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
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.
Does Rosslyn Farms flood? Rarely: 2 flood claims since 1979
Every paid claim on a federal flood insurance policy in Rosslyn Farms, from FEMA’s records.
Rosslyn Farms isn’t in FEMA’s Community Rating System, which cuts flood insurance up to 45% in towns that do extra flood-proofing.
Insurance rates: Allegheny County.The storms Rosslyn Farms remembers
None of the 15 disasters declared for Allegheny County shows FEMA aid or repair money reaching Rosslyn Farms itself in FEMA’s records, so these are its biggest flood-claim years.
- 19791 flood claims paidNo declaration for the county that year
- 19961 flood claims paidThe year of Severe Storms and Flooding, declared for Allegheny County
Allegheny County has had 15 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 Rosslyn Farms after a storm or flood belong in the town’s history. Add one, or share what you remember below.
Add to the Rosslyn Farms archive →Rosslyn Farms and its neighbors
How expected damage per building compares across the town line. Tap a town to see its hazards.
| Town | Hazard risk | Mostly (buildings) | Flood claims |
|---|---|---|---|
| Robinson Township | Aless damage than 95% | river and rain flooding | 27 |
| Crafton | Aless damage than 92% | river and rain flooding | 5 |
| Scott Township | Aless damage than 89% | river and rain flooding | 218 |
| Carnegie | C+more damage than 56% | river and rain flooding | 61 |
| Pittsburgh | Cmore damage than 69% | river and rain flooding | 447 |
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 Rosslyn Farms 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.
- 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 Rosslyn Farms
Does Rosslyn Farms flood?
Flood insurance has paid 2 claims in Rosslyn Farms since 1979, $3K in all.
Is Rosslyn Farms 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 Allegheny County, 28% of homes in mapped flood zones carry federal flood insurance, and 0.4% of all homes do.
How much is flood insurance in Rosslyn Farms?
FEMA’s Community Rating System list shows no discount for Rosslyn Farms’ flood program. Premiums depend on the building; policies usually start 30 days after you buy, so get a quote early.
Storm stories
Memories, warnings and help from neighbors in Rosslyn Farms.
Sources: FEMA National Risk Index v1.20 (December 2025), census-tract table, combined by where Rosslyn Farms’ 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.