Fox Theatre · Photo: Chris Rand · CC BY-SA 3.0More hazard damage per building is expected in Allouez than in 79% of U.S. towns, mostly from river and rain flooding
On FEMA’s National Risk Index, Allouez gets a C− for hazard risk: higher expected damage per building than 79% of U.S. towns, #351 of 362 in Wisconsin. Most of that expected damage is river and rain flooding (93%). Flood insurance has paid 5 claims here since 1990.
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 Allouez 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.
What’s behind Allouez’s grade
River and rain flooding is 93% of the building damage FEMA expects in Allouez, and Allouez’s rate of river and rain flooding damage is higher than 90% of U.S. census tracts.
C− #351 of 362 in Wisconsin; higher expected damage per building than 79% of U.S. towns (21,298).
Allouez’s residents live in 5 census tracts; FEMA’s figures are combined by where they live.
The typical Wisconsin town has lower expected damage than 79% of U.S. towns; within the state, Allouez has more expected damage per building than 97% of Wisconsin towns.
In dollars, FEMA expects about $7.9M a year in losses across Allouez: $6.1M to buildings, the rest to people and crops.
Does Allouez flood? Rarely: 5 flood claims since 1990
Every paid claim on a federal flood insurance policy in Allouez, from FEMA’s records: 0.8 per 1,000 homes, fewer than 82% of the 13,809 U.S. towns with a flood insurance record.
- The March 2019 Midwest Flooding1 claim · $4K
Allouez is in FEMA’s Community Rating System (class 6) for its flood-proofing work.
Insurance rates: Brown County.The storms Allouez remembers
None of the 6 disasters declared for Brown County shows FEMA aid or repair money reaching Allouez itself in FEMA’s records, so these are its biggest flood-claim years.
- 20193 flood claims paidNo declaration for the county that year
- 19902 flood claims paidThe year of Severe Storms, Tornadoes and Flooding, declared for Brown County
Brown County has had 6 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 Allouez after a storm or flood belong in the town’s history. Add one, or share what you remember below.
Add to the Allouez archive →Allouez and its neighbors
Allouez is 5th of the 5 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 |
|---|---|---|---|
| Ashwaubenon | A+among the lowest damage | river and rain flooding | 4 |
| De Pere | A−less damage than 85% | river and rain flooding | 2 |
| Green Bay | A−less damage than 79% | river and rain flooding | 162 |
| Bellevue | B−more damage than 53% | river and rain flooding | 4 |
| Allouez | C−more damage than 79% | river and rain flooding | 5 |
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 Allouez 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.
- Allouez residents get 20% off flood insurance.
Know where neighbors sign up for alerts? Add it to the Handbook so everyone has it.
Questions about natural hazards in Allouez
Is Allouez at risk for natural disasters?
On FEMA’s National Risk Index, Allouez has higher expected damage per building than 79% of U.S. towns: C− for hazard risk, #351 of 362 in Wisconsin. Most of the expected damage is river and rain flooding (93%). This is FEMA’s model of an average year for today’s buildings, not a forecast.
Does Allouez flood?
Flood insurance has paid 5 claims in Allouez since 1990, $20K in all, or 0.8 per 1,000 homes, fewer than 82% of U.S. towns with a flood insurance record. The most claims came from March 2019 Midwest Flooding (1).
Is Allouez 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 Brown County, 10% of homes in mapped flood zones carry federal flood insurance, and 0.6% of all homes do.
How much is flood insurance in Allouez?
Allouez is in FEMA’s Community Rating System (class 6), which takes 20% 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 Allouez?
By flood claims, March 2019 Midwest Flooding: 1 paid, $4K.
Is Allouez at risk from river and rain flooding?
It is the largest share of the building damage FEMA expects here (93%), and Allouez’s rate for it is higher than 90% of U.S. census tracts.
Storm stories
Memories, warnings and help from neighbors in Allouez.
Sources: FEMA National Risk Index v1.20 (December 2025), census-tract table, combined by where Allouez’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.