Storms, floods and disasters in Allen Township
Allen Township isn’t graded for hazard risk: Allen Township has 407 residents; we grade towns of 1,000 or more.
What Allen Township 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.
Does Allen Township flood? No paid flood claims on record
FEMA’s records show no paid flood insurance claims in Allen Township. That’s not a promise: most homes don’t carry flood insurance, so small floods go unrecorded.
Allen Township isn’t in FEMA’s Community Rating System, which cuts flood insurance up to 45% in towns that do extra flood-proofing.
Insurance rates: La Salle County.2 federal disasters brought FEMA money to Allen Township
Disasters that paid out in Allen Township itself (aid to households or repair grants to Allen Township), newest first, with that year’s flood claims.
- 2000Illinois Winter Snow Storms$4K to Allen Township for repairs
- 1999Il-winter Storm 1/1/99$4K to Allen Township for repairs
La Salle County has had 17 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 Allen Township after a storm or flood belong in the town’s history. Add one, or share what you remember below.
Add to the Allen Township archive →Allen Township and its neighbors
How expected damage per building compares across the town line. Tap a town to see its hazards.
| Town | Hazard risk | Mostly (buildings) | Flood claims |
|---|---|---|---|
| Otter Creek Township | C+more damage than 57% | river and rain flooding | 1 |
| Brookfield Township | C−more damage than 79% | river and rain flooding | 21 |
| Highland Township | — | 285 residents; we grade 1,000+ | |
| Sunbury Township | — | 171 residents; we grade 1,000+ | |
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 Allen Township 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.
Know where neighbors sign up for alerts? Add it to the Handbook so everyone has it.
Questions about natural hazards in Allen Township
Is Allen Township 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 La Salle County, 20% of homes in mapped flood zones carry federal flood insurance, and 0.5% of all homes do.
How much is flood insurance in Allen Township?
FEMA’s Community Rating System list shows no discount for Allen Township’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 Allen Township?
By FEMA money that reached Allen Township, Il-winter Storm 1/1/99 (1999): $4K to Allen Township for repairs.
Storm stories
Memories, warnings and help from neighbors in Allen Township.
Sources: FEMA National Risk Index v1.20 (December 2025), census-tract table, combined by where Allen Township’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.