Ottawa County, Michigan
Natural disaster risk, federal disaster history and flood insurance facts.
Ottawa County, Michigan has a moderate overall risk from natural hazards in FEMA's National Risk Index. Its risk score is higher than 83% of US counties. It ranks 9th of 83 counties in Michigan. The costliest hazards here are inland flooding, tornadoes and strong wind. FEMA estimates about $68 million a year in expected losses, or roughly $230 per resident. Since 1965 it has been included in 14 federal disaster or emergency declarations for natural events (9 major disasters). The most recent was in June 2013 (flooding). Fewer than 1 in 100 homes here carry federal flood insurance (318 policies). Since 1978, federal flood insurance has paid about $3.3 million on 336 claims here.
FEMA National Risk Index December 2025; OpenFEMA declarations to Nov 6, 2026; NFIP records. Updated November 6, 2026.
Top risks in Ottawa County
- Check the FEMA flood map for your address, and ask the seller or landlord about past flooding.
- Price a flood policy now. Most new federal policies take 30 days to start.
- Pick a shelter spot: a basement, or an inside room on the lowest floor with no windows.
- Turn on emergency alerts on your phone and keep a weather radio.
- Secure outdoor furniture and trash bins before storms.
- Have trees near the house checked.
All 18 hazards
What the ratings mean ›| Hazard | Rating | Score | Expected loss a year | |
|---|---|---|---|---|
| Inland flooding | 88.0 | $45M | ||
| Tornado | 87.7 | $8M | ||
| Strong wind | 97.8 | $7M | ||
| Cold wave | 73.4 | $3M | ||
| Hail | 83.8 | $2M | ||
| Heat wave | 63.6 | $939K | ||
| Lightning | 76.5 | $867K | ||
| Earthquake | 61.3 | $665K | ||
| Ice storm | 77.5 | $469K | ||
| Winter weather | 82.0 | $317K | ||
| Wildfire | 34.4 | $26K | ||
| Hurricane | 26.4 | $15K | ||
| Coastal flooding | 35.2 | $12K | ||
| Landslide | 51.8 | $2K |
Scores are percentiles: a score of 90 means higher risk than about 90% of US counties for that hazard. Hazards FEMA does not rate here are left out. Social vulnerability is very low and community resilience is very high in FEMA's measures.
Federal disaster history
Recent disasters nationwide ›Declarations by decade
Federal declarations for natural events that included Ottawa County. 2020s bar runs to November 2026.
By type
Most recent
Show all 14
Michigan also had 6 statewide declarations that did not name single counties.
Storm history since 1956
Tornado risk by county ›The National Weather Service has logged 344 storm reports in Ottawa County since 1956, with 21 deaths and 228 injuries and about $108 million in reported damage. The strongest on record here was an F5 tornado on April 3, 1956.
Strongest tornadoes
| Date | Strength | Near | Hurt / killed |
|---|---|---|---|
| Apr 3, 1956 | F5 | – | 200 / 14 |
| Apr 11, 1965 | F4 | – | 0 / 0 |
| Apr 3, 1956 | F3 | – | 0 / 0 |
| Mar 6, 1956 | F2 | – | 0 / 0 |
| Jun 22, 1957 | F2 | – | 0 / 0 |
Most damaging storms
| Date | Type | Near | Damage |
|---|---|---|---|
| May 31, 1998 | Thunderstorm Wind | Grand Haven | $45M |
| Jun 19, 2009 | Flash Flood | Vriesland | $34M |
| Apr 17, 2013 | Flood | Ferrysburg | $5M |
| May 18, 2020 | Flood | Grand Haven Arpt | $5M |
| Dec 27, 2008 | Flood | Crisp | $4M |
| Jun 7, 2008 | Flash Flood | Holland | $3M |
Source: NOAA Storm Events Database, county-based reports through Jun 11, 2026. Tornado records start in 1950, hail and wind in 1955, and floods and other storm types in 1996, so older decades undercount. Damage is in dollars of the year it happened and is often an estimate. Winter storms, heat and hurricanes are logged by forecast zone, not county, so they are not counted here.
Flood insurance in Ottawa County
Check your address flood zone ›National Flood Insurance Program (NFIP) records only; private flood policies are not included. Home counts as of Aug 3, 2026. Since 2021 NFIP prices each home separately under Risk Rating 2.0, so your price depends on the building, not the county. Ask an agent for a quote.
Homes in Ottawa County
Older homes and mobile homes usually suffer more damage in storms, floods and earthquakes, and can cost more to insure. If you are buying, ask about roof age, foundation bolting and any retrofits. Source: US Census Bureau, American Community Survey 2020 to 2024 5-year estimates; 117,604 housing units.
Compare in Michigan
All 83 ›| Largest counties | Overall risk | Top hazard |
|---|---|---|
| Wayne County | Inland flooding | |
| Oakland County | Inland flooding | |
| Macomb County | Inland flooding | |
| Kent County | Inland flooding | |
| Genesee County | Inland flooding | |
| Washtenaw County | Inland flooding | |
| Ottawa County | Inland flooding | |
| Ingham County | Inland flooding |
Neighboring counties
| County | Overall risk | Declarations |
|---|---|---|
| Milwaukee County, WI | 20 | |
| Kent County | 11 | |
| Racine County, WI | 15 | |
| Muskegon County | 12 | |
| Allegan County | 15 |
Cities in Ottawa County
Common questions about Ottawa County
What is the biggest natural hazard in Ottawa County?
Inland flooding has the highest expected yearly losses in Ottawa County, about $44.6 million a year in FEMA's estimate. Tornado is second at $8.5 million.
How many federal disasters has Ottawa County had?
Ottawa County has been included in 14 federal disaster or emergency declarations for natural events since 1965, including 9 major disasters. The most recent was Flooding in June 2013.
Is Ottawa County a high-risk place to live?
Its overall rating is Relatively Moderate, 9th highest of 83 in Michigan. A county rating covers the whole area. Risk at one address can be much higher or lower, so check the FEMA flood map and ask about the home's history.
Do I need flood insurance in Ottawa County?
Standard home insurance does not cover flooding. About 1 in 333 homes in Ottawa County has federal flood insurance. Lenders require it in mapped high-risk zones, but many flood claims come from outside those zones.
How many tornadoes has Ottawa County had?
NOAA records list 25 tornadoes in Ottawa County since 1950. The strongest was an F5 tornado on April 3, 1956. The weather service has also logged 108 hail reports and 19 floods here.
Sources: FEMA National Risk Index (December 2025), OpenFEMA Disaster Declarations Summaries, and NFIP policy and claims data. Hazard Compass is independent and not affiliated with FEMA. These figures describe the whole county, not a single property, and are not insurance or safety advice. Report a problem.