FEMA puts Rock River Township’s expected hazard damage per building below that of 75% of U.S. towns, mostly from river and rain flooding
On FEMA’s National Risk Index, Rock River Township gets a B+ for hazard risk: lower expected damage per building than 75% of U.S. towns. Most of that expected damage is river and rain flooding (86%), then hail (12%). 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
What Rock River 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
Hail
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 Rock River Township’s grade
River and rain flooding is 86% of the building damage FEMA expects in Rock River Township, and Rock River Township’s rate of river and rain flooding damage is higher than 50% of U.S. census tracts. Hail adds 12%, at a rate in the top 10% of U.S. census tracts.
B+ lower expected damage per building than 75% of U.S. towns (21,298).
Rock River Township’s residents live in 2 census tracts; FEMA’s figures are combined by where they live.
In dollars, FEMA expects about $527K a year in losses across Rock River Township: $354K to buildings, the rest to people and crops.
Does Rock River Township flood? No paid flood claims on record
FEMA’s records show no paid flood insurance claims in Rock River Township. That’s not a promise: most homes don’t carry flood insurance, so small floods go unrecorded.
Rock River 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: Alger County.The storms Rock River Township remembers
None of the 2 disasters declared for Alger County shows FEMA aid or repair money reaching Rock River Township itself in FEMA’s records, so these are its biggest flood-claim years.
Alger County has had 2 natural disasters declared by the President since 1953, most often winter storms, then severe storms. Not counted: the 2005 Hurricane Katrina evacuee emergency, which covered counties that took in evacuees.
Rock River Township and its neighbors
Rock River Township 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 |
|---|---|---|---|
| Au Train Township | B+less damage than 75% | river and rain flooding | 2 |
| Rock River Township | B+less damage than 75% | river and rain flooding | 0 |
| Limestone Township | — | 442 residents; we grade 1,000+ | |
| Onota Township | — | 435 residents; we grade 1,000+ | |
| Skandia Township | — | 994 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 Rock River 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.
- 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.
- 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 Rock River Township
Is Rock River Township at risk for natural disasters?
On FEMA’s National Risk Index, Rock River Township has lower expected damage per building than 75% of U.S. towns: B+ for hazard risk. Most of the expected damage is river and rain flooding (86%) and hail (12%). This is FEMA’s model of an average year for today’s buildings, not a forecast.
Is Rock River 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 Alger County, 0.2% of all homes carry federal flood insurance.
How much is flood insurance in Rock River Township?
FEMA’s Community Rating System list shows no discount for Rock River Township’s flood program. Premiums depend on the building; policies usually start 30 days after you buy, so get a quote early.
Is Rock River Township at risk from river and rain flooding?
It is the largest share of the building damage FEMA expects here (86%), and Rock River Township’s rate for it is higher than 50% of U.S. census tracts.
Storm stories
Memories, warnings and help from neighbors in Rock River Township.
Sources: FEMA National Risk Index v1.20 (December 2025), census-tract table, combined by where Rock River 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.