Storms, floods and disasters in Grafton Township
Grafton Township isn’t graded for hazard risk: Grafton Township has 221 residents; we grade towns of 1,000 or more.
What Grafton 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
Tornadoes
Strong wind
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.
Does Grafton Township flood? No paid flood claims on record
FEMA’s records show no paid flood insurance claims in Grafton Township. That’s not a promise: most homes don’t carry flood insurance, so small floods go unrecorded.
Grafton 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: Sibley County.2 federal disasters brought FEMA money to Grafton Township
Disasters that paid out in Grafton Township itself (aid to households or repair grants to Grafton Township), newest first, with that year’s flood claims.
- 2024Severe Storms and Flooding$13K to Grafton Township for repairs
- 2001Severe Winter Storms, Flooding, and Tornadoes$1K to Grafton Township for repairs
Sibley County has had 17 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.
Old photos of Grafton Township after a storm or flood belong in the town’s history. Add one, or share what you remember below.
Add to the Grafton Township archive →Grafton 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 |
|---|---|---|---|
| Moltke Township | — | 296 residents; we grade 1,000+ | |
| Preston Lake Township | — | 195 residents; we grade 1,000+ | |
| Martinsburg Township | — | 145 residents; we grade 1,000+ | |
| Round Grove Township | — | 308 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 Grafton 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.
- 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.
- Trim dead limbs over the house and driveway.
- Tie down trash cans and outdoor furniture.
- Stay clear of downed lines and call the utility.
- 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 Grafton Township
Is Grafton 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 Sibley County, 0.0% of all homes carry federal flood insurance.
How much is flood insurance in Grafton Township?
FEMA’s Community Rating System list shows no discount for Grafton 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 Grafton Township?
By FEMA money that reached Grafton Township, Severe Storms and Flooding (2024): $13K to Grafton Township for repairs.
Storm stories
Memories, warnings and help from neighbors in Grafton Township.
Sources: FEMA National Risk Index v1.20 (December 2025), census-tract table, combined by where Grafton 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.