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CHazard risk
Natural hazards in Sierra Ridge · FEMA

On FEMA’s figures, Sierra Ridge faces more hazard damage per building than 72% of U.S. towns, mostly from river and rain flooding

On FEMA’s National Risk Index, Sierra Ridge gets a C for hazard risk: higher expected damage per building than 72% of U.S. towns, #113 of 159 in Colorado. Most of that expected damage is river and rain flooding (76%), then hail (11%). 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

more than 72%of U.S. townsLess damageMoreExpected yearly damage per dollar of building, vs. the 21,298 U.S. towns we grade#113 of 159 in Colorado
By hazard

What Sierra Ridge 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

76%of expected building damage
Above average · higher than 78% of U.S. census tracts
Recorded about once a year in the area

Hail

11%of expected building damage
Well above average · in the top 5% of U.S. census tracts
Recorded about 8 times a year in the area

Tornadoes

9%of expected building damage
Well above average · higher than 87% of U.S. census tracts
Smaller shares here
 Wildfire Strong wind Earthquakes Winter storms Lightning Ice storms Cold waves Heat waves Landslides Volcanic activity
FEMA models no building damage here
Coastal floodingHurricanesAvalanchesTsunamis

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.

Flood risk changes street by street. Check a specific address on FEMA’s flood map, and ask about flood insurance before you buy.
Hazard risk grade

What’s behind Sierra Ridge’s grade

River and rain flooding is 76% of the building damage FEMA expects in Sierra Ridge, and Sierra Ridge’s rate of river and rain flooding damage is higher than 78% of U.S. census tracts. Hail adds 11%, at a rate in the top 5% of U.S. census tracts.

Where Sierra Ridge sits
Sierra Ridge
Least damageMiddleMost damage

C #113 of 159 in Colorado; higher expected damage per building than 72% of U.S. towns (21,298).

All of Sierra Ridge’s residents live in one census tract; the figures are that tract’s.

What drives the damage to buildings
River and rain flooding76%Hail11%Tornadoes9%Everything else4%

The typical Colorado town has higher expected damage than 56% of U.S. towns; within the state, Sierra Ridge has more expected damage per building than 71% of Colorado towns.

In dollars, FEMA expects about $1.1M a year in losses across Sierra Ridge: $892K to buildings, the rest to people and crops.

Shared tract.All of Sierra Ridge’s 3,490 residents (2020 census) live in one census tract. FEMA publishes its model by tract, so the rate and the hazard mix are the tract’s. The flood claims below are the town’s own.
A shared figure. The grade describes the whole tract, not each street in it, and FEMA’s model is an average year for today’s buildings, not a record: the claims below are the record.

How TownRatings grades hazard risk →

Flood insurance claims

Does Sierra Ridge flood? No paid flood claims on record

FEMA’s records show no paid flood insurance claims in Sierra Ridge. That’s not a promise: most homes don’t carry flood insurance, so small floods go unrecorded.

of homes in flood zones are insured
of all homes are insured
No community discount

Sierra Ridge isn’t in FEMA’s Community Rating System, which cuts flood insurance up to 45% in towns that do extra flood-proofing.

Insurance rates: Douglas County.
Disasters

The storms Sierra Ridge remembers

None of the 8 disasters declared for Douglas County shows FEMA aid or repair money reaching Sierra Ridge itself in FEMA’s records, so these are its biggest flood-claim years.

Disasters declared, by decade
Paid out in Sierra RidgeDouglas County only

Douglas County has had 8 natural disasters declared by the President since 1953, most often floods, then severe storms. Not counted: the 2005 Hurricane Katrina evacuee emergency, which covered counties that took in evacuees.

Also 2 FEMA wildfire suppression grants (Fire Management Assistance, not a disaster declaration) for fires in Douglas County, 2002–2003.

Next door

Sierra Ridge and its neighbors

Sierra Ridge is 3rd of the 3 graded towns here, from least expected damage per building to most. Tap a town to see its hazards.

Lowest fifthSecondMiddleFourthHighest fifth
TownHazard riskMostly (buildings)Flood claims
Stepping StoneB−less damage than 54%river and rain flooding—
Meridian VillageC+more damage than 64%river and rain flooding—
Sierra RidgeCmore damage than 72%river and rain flooding0

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.

Be ready

Get ready for what Sierra Ridge faces

A short kit for the hazards that drive the building damage here, what to check before you buy, and where neighbors get alerts.

When the river rises
  • 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.
More from Ready.gov ↗
Hail
  • Park in a garage or under cover when storms are forecast.
  • Stay away from windows while it falls.
  • Photograph roof and car damage for your insurer.
More from Ready.gov ↗
Tornado warnings
  • Pick your spot now: the lowest floor, an inside room, no windows.
  • A watch means be ready; a warning means take cover now.
  • Keep shoes and a flashlight by the bed.
More from Ready.gov ↗
Before you buy or rent
  • 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.
When a storm is coming
Forecast and alertsWeather →911, the nearest ERSafety →

Know where neighbors sign up for alerts? Add it to the Handbook so everyone has it.

Questions about natural hazards in Sierra Ridge

Is Sierra Ridge at risk for natural disasters?

On FEMA’s National Risk Index, Sierra Ridge has higher expected damage per building than 72% of U.S. towns: C for hazard risk, #113 of 159 in Colorado. Most of the expected damage is river and rain flooding (76%) and hail (11%). 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 Sierra Ridge 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 Douglas County, 20% of homes in mapped flood zones carry federal flood insurance, and 0.3% of all homes do.

How much is flood insurance in Sierra Ridge?

FEMA’s Community Rating System list shows no discount for Sierra Ridge’s flood program. Premiums depend on the building; policies usually start 30 days after you buy, so get a quote early.

Is Sierra Ridge at risk from river and rain flooding?

It is the largest share of the building damage FEMA expects here (76%), and Sierra Ridge’s rate for it is higher than 78% of U.S. census tracts.

Storm stories

Memories, warnings and help from neighbors in Sierra Ridge.

Town Square →
Start the conversation

Sources: FEMA National Risk Index v1.20 (December 2025), census-tract table, combined by where Sierra Ridge’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.