FEMA expects more hazard damage per building in Chattanooga Valley than in 73% of U.S. towns, mostly from river and rain flooding
On FEMA’s National Risk Index, Chattanooga Valley gets a C for hazard risk: higher expected damage per building than 73% of U.S. towns, #229 of 264 in Georgia. Most of that expected damage is river and rain flooding (78%), then tornadoes (12%). Flood insurance has paid 1 claim here since 2009.
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 Chattanooga Valley 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
Tornadoes
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 Chattanooga Valley’s grade
River and rain flooding is 78% of the building damage FEMA expects in Chattanooga Valley, and Chattanooga Valley’s rate of river and rain flooding damage is higher than 80% of U.S. census tracts. Tornadoes add 12%, at a rate in the top 5% of U.S. census tracts.
C #229 of 264 in Georgia; higher expected damage per building than 73% of U.S. towns (21,298).
All of Chattanooga Valley’s residents live in one census tract; the figures are that tract’s.
The typical Georgia town has lower expected damage than 72% of U.S. towns; within the state, Chattanooga Valley has more expected damage per building than 87% of Georgia towns.
In dollars, FEMA expects about $1.6M a year in losses across Chattanooga Valley: $770K to buildings, the rest to people and crops.
Does Chattanooga Valley flood? Rarely: 1 flood claim since 2009
Every paid claim on a federal flood insurance policy in Chattanooga Valley, from FEMA’s records: 0.6 per 1,000 homes, fewer than 87% of the 13,809 U.S. towns with a flood insurance record.
- The Late summer storms1 claim · $23K
Chattanooga Valley isn’t in FEMA’s Community Rating System, which cuts flood insurance up to 45% in towns that do extra flood-proofing.
Insurance rates: Walker County.The storms Chattanooga Valley remembers
None of the 14 disasters declared for Walker County shows FEMA aid or repair money reaching Chattanooga Valley itself in FEMA’s records, so these are its biggest flood-claim years.
- 20091 flood claims paidThe year of Severe Storms and Flooding, declared for Walker County
Walker County has had 14 natural disasters declared by the President since 1953, most often severe storms, then winter storms. Not counted: the 2005 Hurricane Katrina evacuee emergency, which covered counties that took in evacuees.
Old photos of Chattanooga Valley after a storm or flood belong in the town’s history. Add one, or share what you remember below.
Add to the Chattanooga Valley archive →Chattanooga Valley and its neighbors
Chattanooga Valley is 2nd of the 2 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 |
|---|---|---|---|
| Fairview | C+more damage than 55% | river and rain flooding | — |
| Chattanooga Valley | Cmore damage than 73% | river and rain flooding | 1 |
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 Chattanooga Valley 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.
- 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.
- 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 Chattanooga Valley
Is Chattanooga Valley at risk for natural disasters?
On FEMA’s National Risk Index, Chattanooga Valley has higher expected damage per building than 73% of U.S. towns: C for hazard risk, #229 of 264 in Georgia. Most of the expected damage is river and rain flooding (78%) and tornadoes (12%). 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 Chattanooga Valley flood?
Flood insurance has paid 1 claim in Chattanooga Valley since 2009, $23K in all, or 0.6 per 1,000 homes, fewer than 87% of U.S. towns with a flood insurance record. The most claims came from Late summer storms (1).
Is Chattanooga Valley 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 Walker County, 14% of homes in mapped flood zones carry federal flood insurance, and 0.5% of all homes do.
How much is flood insurance in Chattanooga Valley?
FEMA’s Community Rating System list shows no discount for Chattanooga Valley’s 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 Chattanooga Valley?
By flood claims, Late summer storms: 1 paid, $23K.
Is Chattanooga Valley at risk from river and rain flooding?
It is the largest share of the building damage FEMA expects here (78%), and Chattanooga Valley’s rate for it is higher than 80% of U.S. census tracts.
Storm stories
Memories, warnings and help from neighbors in Chattanooga Valley.
Sources: FEMA National Risk Index v1.20 (December 2025), census-tract table, combined by where Chattanooga Valley’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.