Photo: Kiddo27 · CC BY-SA 4.0On FEMA’s figures, Pleasanton faces more hazard damage per building than 98% of U.S. towns, mostly from river and rain flooding
On FEMA’s National Risk Index, Pleasanton gets a D− for hazard risk: higher expected damage per building than 98% of U.S. towns, #705 of 847 in California. Most of that expected damage is river and rain flooding (57%), then earthquakes (40%). Flood insurance has paid 9 claims here since 1983.
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 Pleasanton’s natural hazards
From FEMA’s model and FEMA’s records, below.
What Pleasanton 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
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 Pleasanton’s grade
River and rain flooding is 57% of the building damage FEMA expects in Pleasanton, and Pleasanton’s rate of river and rain flooding damage is in the top 4% of U.S. census tracts. Earthquakes add 40%, at a rate in the top 3% of U.S. census tracts.
D− #705 of 847 in California; higher expected damage per building than 98% of U.S. towns (21,298).
Pleasanton’s residents live in 15 census tracts; FEMA’s figures are combined by where they live.
The typical California town has higher expected damage than 92% of U.S. towns; within the state, Pleasanton has more expected damage per building than 83% of California towns.
In dollars, FEMA expects about $125M a year in losses across Pleasanton: $107M to buildings, the rest to people and crops.
Does Pleasanton flood? Rarely: 9 flood claims since 1983
Every paid claim on a federal flood insurance policy in Pleasanton, from FEMA’s records: 0.3 per 1,000 homes, fewer than 94% of the 13,809 U.S. towns with a flood insurance record.
- The California Atmospheric River2 claims · $398K
- The Pineapple Express - Southern1 claim · $22K
Pleasanton is in FEMA’s Community Rating System (class 7) for its flood-proofing work.
Insurance rates: Alameda County.5 federal disasters brought FEMA money to Pleasanton
Disasters that paid out in Pleasanton itself (aid to households or repair grants to the City of Pleasanton), newest first, with that year’s flood claims.
- 2023Severe Winter Storms, Straight-line Winds, Flooding, Landslides, and Mudslides$212K to the City of Pleasanton for repairs1 flood claim paid that year
- 2022Severe Winter Storms, Flooding, Landslides, and Mudslides77 households applied for aid$120K aid approved$1.5M to the City of Pleasanton for repairs1 flood claim paid that year
- 2017Severe Winter Storms, Flooding, and Mudslides$445K to the City of Pleasanton for repairs
- 2017Severe Winter Storms, Flooding, and Mudslides$23K to the City of Pleasanton for repairs
- 2006Severe Storms, Flooding, Landslides, and Mudslides$183K to the City of Pleasanton for repairs
Alameda County has had 20 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 Pleasanton after a storm or flood belong in the town’s history. Add one, or share what you remember below.
Add to the Pleasanton archive →Pleasanton and its neighbors
Pleasanton is 4th of the 4 graded towns here, from least expected damage per building to most. Tap a town to see its hazards.
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 Pleasanton 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.
- 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.
- Pleasanton residents get 15% off flood insurance.
Know where neighbors sign up for alerts? Add it to the Handbook so everyone has it.
Questions about natural hazards in Pleasanton
Is Pleasanton at risk for natural disasters?
On FEMA’s National Risk Index, Pleasanton has higher expected damage per building than 98% of U.S. towns: D− for hazard risk, #705 of 847 in California. Most of the expected damage is river and rain flooding (57%) and earthquakes (40%). This is FEMA’s model of an average year for today’s buildings, not a forecast.
Does Pleasanton flood?
Flood insurance has paid 9 claims in Pleasanton since 1983, $455K in all, or 0.3 per 1,000 homes, fewer than 94% of U.S. towns with a flood insurance record. 1 properties have flooded more than once. The most claims came from California Atmospheric River (2).
Is Pleasanton 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 Alameda County, 36% of homes in mapped flood zones carry federal flood insurance, and 0.8% of all homes do.
How much is flood insurance in Pleasanton?
Pleasanton is in FEMA’s Community Rating System (class 7), which takes 15% off federal flood insurance policies for its flood-proofing work. Premiums depend on the building; policies usually start 30 days after you buy, so get a quote early.
What was the biggest storm in Pleasanton?
By FEMA money that reached Pleasanton, Severe Winter Storms, Flooding, Landslides, and Mudslides (2022): 77 households applied for aid, $120K approved, and $1.5M to the City of Pleasanton for repairs. By flood claims, California Atmospheric River: 2 paid, $398K.
Is Pleasanton at risk from river and rain flooding?
It is the largest share of the building damage FEMA expects here (57%), and Pleasanton’s rate for it is in the top 4% of U.S. census tracts.
Storm stories
Memories, warnings and help from neighbors in Pleasanton.
Sources: FEMA National Risk Index v1.20 (December 2025), census-tract table, combined by where Pleasanton’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.