Ottawa County Disaster Risk
Ottawa County, Ohio
FEMA Risk Rating
Relatively Low
National Percentile
59th
of 3,144 counties
State Rank
#44
of 88 (1 = highest risk)
Flood Risk
73th
percentile
Hazard Risk Breakdown
Flood
River, coastal, and surface flooding risk
Relatively Low
Higher than 73% of US counties
Wildfire
Wildland and wildland-urban interface fire risk
Very Low
Higher than 14% of US counties
Tornado
Tornado and severe thunderstorm risk
Relatively Low
Higher than 73% of US counties
Earthquake
Seismic activity and ground shaking risk
Relatively Low
Higher than 53% of US counties
Hurricane
Tropical cyclone and hurricane risk
Relatively Low
Higher than 44% of US counties
Risk Overview
About Natural Disaster Risk in Ottawa County, Ohio
Ottawa's risk moderately exceeds U.S. average
Ottawa County's composite risk score of 59.16 rates as "Relatively Low" but surpasses the national average, placing it slightly above the middle tier of American disaster risk. Residents face notably higher natural hazard exposure than most U.S. counties, driven primarily by tornado and flood threats.
Above-average risk within Ohio
Ottawa County's 59.16 score exceeds Ohio's 55.03 state average, ranking it among the state's moderate-risk counties. Tornado and flood hazards push the county above state baseline, though other threats remain relatively modest.
Riskier than many peers but manageable
Ottawa County (59.16) faces notably higher hazard exposure than Morgan County (18.23), Morrow County (24.40), and Perry County (25.99), but considerably less than Montgomery County (92.65). This positions it as a mid-range risk area within its regional context.
Tornadoes and floods present dual threat
Ottawa County's tornado risk scores 72.81, the county's highest hazard rating and a serious concern during spring and early summer. Flood risk at 72.61 follows closely, making both severe weather and water-related disasters the county's primary preparedness priorities.
Flood insurance and storm coverage critical
Ottawa County residents, especially those near waterways or in mapped flood zones, should secure separate flood insurance immediately—standard policies exclude flood damage. Verify your property's flood zone with FEMA and ensure your homeowners policy covers windstorm damage given the county's significant dual tornado and flood threats.
Source: FEMA National Risk Index · Narrative reviewed by Evan Brooks, Data Editor
Preparedness Guide
What to Prepare for in Ottawa County
Top Hazards by Exposure
Source: FEMA National Risk Index v1.19.0 · Percentiles are national (3,144 counties)
Risk Advisory: Ottawa County
Risk Verdict
Ottawa County has a below-average natural disaster risk profile, scoring at the 59th percentile nationally under FEMA's National Risk Index. Households in Ottawa County benefit from knowing which individual hazard types — flood, wildfire, tornado, or hurricane — are the primary contributors.
Hazard Breakdown
Tornado risk is Ottawa County's dominant natural hazard, ranked at the 73th percentile nationally under FEMA's National Risk Index. Flood ranks second at the 73th percentile nationally. Additional tracked hazards include earthquake (53th percentile), hurricane (44th percentile), wildfire (14th percentile).
Preparedness Context
Tornado risk is Ottawa County's top-ranked natural hazard at the 73th percentile nationally. For Ottawa County households, the most protective action available is identifying a reinforced interior room on the lowest floor — a bathroom, closet, or central hallway away from windows. The secondary flood hazard at the 73th percentile nationally adds seasonal complexity to Ottawa County's preparedness calendar, since flood and tornado risk often peak at different points in the year. A battery-powered NOAA All Hazards weather radio with an auto-alert tone is the highest-leverage single item for tornado preparedness in Ottawa County, since it delivers warnings even when power is out and phone networks are congested.
Regional Context
At just 4.1 composite points from the Ohio average, Ottawa County's natural disaster risk is closely in line with its in-state peers.
Is your household prepared for Ottawa County's hazards?
Review FEMA's county-specific preparedness checklists and emergency planning guides.
Frequently Asked Questions
What is the natural disaster risk in Ottawa County, OH?
What types of natural hazards affect Ottawa County?
How does Ottawa County risk compare to the Ohio average?
Is Ottawa County at risk for tornado?
How is natural disaster risk measured?
Why is Ottawa County higher risk than average?
Data Source
Risk data sourced from the FEMA National Risk Index (NRI). Risk scores are relative rankings (0–100) across all US counties — not absolute risk measures. Higher scores indicate higher relative risk compared to other counties.
Disclaimer: This data is informational only. It is not financial, insurance, or legal advice. Always consult a qualified professional before making insurance or real estate decisions.