Photo: Unknown authorUnknown author · Public domainMore hazard damage per building is expected in Hidden Hills than in 90% of U.S. towns, led by river and rain flooding
On FEMA’s National Risk Index, Hidden Hills gets a D for hazard risk: higher expected damage per building than 90% of U.S. towns. Most of that expected damage is river and rain flooding (46%), then earthquakes (40%). Flood insurance has paid 24 claims here since 1978.
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 Hidden Hills’ natural hazards
From FEMA’s model and FEMA’s records, below.
What Hidden Hills 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
Wildfire
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 Hidden Hills’ grade
River and rain flooding is 46% of the building damage FEMA expects in Hidden Hills, and Hidden Hills’ rate of river and rain flooding damage is higher than 76% of U.S. census tracts. Earthquakes add 40%, at a rate in the top 9% of U.S. census tracts.
D higher expected damage per building than 90% of U.S. towns (21,298).
All of Hidden Hills’ residents live in one census tract; the figures are that tract’s.
In dollars, FEMA expects about $3.1M a year in losses across Hidden Hills: $2.9M to buildings, the rest to people and crops.
Does Hidden Hills flood? Sometimes: 24 flood claims since 1978
Every paid claim on a federal flood insurance policy in Hidden Hills, from FEMA’s records: 32.5 per 1,000 homes, more than 89% of the 13,809 U.S. towns with a flood insurance record.
- The Pineapple Express - Southern2 claims · $18K
- The California Atmospheric River1 claim · $89K
Hidden Hills isn’t in FEMA’s Community Rating System, which cuts flood insurance up to 45% in towns that do extra flood-proofing.
Insurance rates: Los Angeles County.3 federal disasters brought FEMA money to Hidden Hills
Disasters that paid out in Hidden Hills itself (aid to households or repair grants to the City of Hidden Hills), newest first, with that year’s flood claims.
- 2025Wildfires and Straight-line Winds8 households applied for aid$629 aid approved$95K to the City of Hidden Hills for repairs
- 2018Wildfires2 households applied for aid$180 aid approved$25K to the City of Hidden Hills for repairs
- 2004Severe Storms, Flooding, Debris Flows, and Mudslides7 households applied for aid$15K aid approved1 flood claim paid that year
Los Angeles County has had 40 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.
Also 44 FEMA wildfire suppression grants (Fire Management Assistance, not a disaster declaration) for fires in Los Angeles County, 2002–2025.
Old photos of Hidden Hills after a storm or flood belong in the town’s history. Add one, or share what you remember below.
Add to the Hidden Hills archive →Hidden Hills and its neighbors
Hidden Hills 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 |
|---|---|---|---|
| Hidden Hills | Dmore damage than 90% | river and rain flooding | 24 |
| Los Angeles | D−more damage than 96% | earthquakes | 1,980 |
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 Hidden Hills 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.
- Clear dead leaves and brush within 5 feet of the house.
- Sign up for local alerts and know two ways out.
- Keep N95 masks for smoky days.
- 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 Hidden Hills
Is Hidden Hills at risk for natural disasters?
On FEMA’s National Risk Index, Hidden Hills has higher expected damage per building than 90% of U.S. towns: D for hazard risk. Most of the expected damage is river and rain flooding (46%) and earthquakes (40%). 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.
Does Hidden Hills flood?
Flood insurance has paid 24 claims in Hidden Hills since 1978, $480K in all, or 32.5 per 1,000 homes, more than 89% of U.S. towns with a flood insurance record. 2 properties have flooded more than once. The most claims came from Pineapple Express - Southern (2).
Is Hidden Hills 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 Los Angeles County, 33% of homes in mapped flood zones carry federal flood insurance, and 0.5% of all homes do.
How much is flood insurance in Hidden Hills?
FEMA’s Community Rating System list shows no discount for Hidden Hills’ 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 Hidden Hills?
By FEMA money that reached Hidden Hills, Wildfires and Straight-line Winds (2025): 8 households applied for aid, $629 approved, and $95K to the City of Hidden Hills for repairs. By flood claims, Pineapple Express - Southern: 2 paid, $18K.
Is Hidden Hills at risk from river and rain flooding?
It is the largest share of the building damage FEMA expects here (46%), and Hidden Hills’ rate for it is higher than 76% of U.S. census tracts.
Storm stories
Memories, warnings and help from neighbors in Hidden Hills.
Sources: FEMA National Risk Index v1.20 (December 2025), census-tract table, combined by where Hidden Hills’ 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.