riskbycounty
FEMA NRI 1.19.0Updated Nov 2023 · Coverage 2014–2023Methodology

Scott County Disaster Risk

Scott County, Iowa

FEMA Risk Rating

Relatively Moderate

National Percentile

85th

of 3,144 counties

State Rank

#4

of 99 (1 = highest risk)

Flood Risk

88th

percentile

Hazard Risk Breakdown

Flood

River, coastal, and surface flooding risk

Moderate

Higher than 88% of US counties

Wildfire

Wildland and wildland-urban interface fire risk

Relatively Low

Higher than 52% of US counties

Tornado

Tornado and severe thunderstorm risk

Moderate

Higher than 83% of US counties

Earthquake

Seismic activity and ground shaking risk

Relatively Low

Higher than 75% of US counties

Hurricane

Tropical cyclone and hurricane risk

Very Low

Higher than 17% of US counties

Risk Overview

About Natural Disaster Risk in Scott County, Iowa

Scott County faces above-average disaster risk

Scott County's composite risk score of 84.89 earns a Relatively Moderate rating—more than double Iowa's state average of 39.68. This places it among higher-risk areas nationally and reflects significant exposure to multiple hazards.

Scott ranks among Iowa's riskiest counties

At 84.89, Scott County substantially exceeds the state average, putting it in Iowa's upper tier of natural disaster risk. Its risk profile stands out as notably higher than most other Iowa counties.

Scott faces steeper risks than neighbors

Scott County's 84.89 score dramatically exceeds nearby Story County (68.83) and Tama County (45.32). It emerges as the highest-risk county in its immediate region.

Floods and tornadoes top the threat list

Flood risk (88.42) and tornado risk (82.89) dominate Scott County's hazard profile, with wildfire (52.23) and earthquake (75.13) risks also elevated. The combination of water and wind threats makes Scott County's disaster preparedness unusually critical.

Comprehensive coverage is essential here

Scott County residents need flood insurance—a separate policy from standard homeowner's coverage—plus tornado and wind protection. Review your coverage annually and ensure your policy limits match your home's replacement cost.

Source: FEMA National Risk Index · Narrative reviewed by Evan Brooks, Data Editor

Preparedness Guide

What to Prepare for in Scott County

Top Hazards by Exposure

  1. #1
    FloodPrepare
    88th percentile
  2. #2
    TornadoPrepare
    83th percentile
  3. #3
    EarthquakePrepare
    75th percentile

Source: FEMA National Risk Index v1.19.0 · Percentiles are national (3,144 counties)

Risk Advisory: Scott County

Risk Verdict

At the 85th percentile nationally, Scott County sits in the upper half of U.S. counties for natural disaster exposure. At this risk level, having a documented household preparedness plan — not just awareness — is the meaningful next step for Scott County residents.

Hazard Breakdown

Flood risk is Scott County's dominant natural hazard, ranked at the 88th percentile nationally under FEMA's National Risk Index. Tornado ranks second at the 83th percentile nationally. Additional tracked hazards include earthquake (75th percentile), wildfire (52th percentile), hurricane (17th percentile).

Preparedness Context

At the 88th percentile nationally for flood risk, Scott County residents benefit from understanding their specific flood zone status. Even one inch of floodwater causes significant structural damage to properties outside officially designated high-risk zones. Secondary tornado exposure at the 83th percentile adds a second preparedness layer; households should review coverage options and alert sign-up for both hazard types. A tested family preparedness plan specific to Scott County's primary hazards — including how to shelter in place or evacuate, and who to call — provides more real protection than a general emergency kit sitting unused on a shelf.

Regional Context

The Iowa county average is 45.2 composite points below Scott County's score, a gap that reflects the county's elevated position in the state's hazard distribution.

Is your household prepared for Scott County's hazards?

Review FEMA's county-specific preparedness checklists and emergency planning guides.

FEMA Ready Guide →

Frequently Asked Questions

What is the natural disaster risk in Scott County, IA?
Scott County has a FEMA National Risk Index rating of Relatively Moderate, placing it in the 85th percentile nationally out of 3,144 counties. This composite score reflects the county's overall exposure to natural hazards including floods, wildfires, tornadoes, earthquakes, and hurricanes, weighted by expected annual loss and social vulnerability.
What types of natural hazards affect Scott County?
Scott County is evaluated for five major natural hazard types: flooding (88th percentile), tornado (83th percentile), earthquake (75th percentile), wildfire (52th percentile), hurricane (17th percentile). The highest-risk hazard is flooding at the 88th percentile nationally. These scores are derived from FEMA's National Risk Index, which analyzes expected annual loss, social vulnerability, and community resilience for each hazard type.
How does Scott County risk compare to the Iowa average?
Scott County's composite risk percentile is 85th, compared to the Iowa state average of 40th percentile. The state's overall risk rating is Very Low. This means Scott County faces higher natural disaster risk than the typical county in Iowa.
Is Scott County at risk for flooding?
Yes, Scott County's flooding risk is at the 88th percentile nationally. This places it in the top quartile for this hazard type.
How is natural disaster risk measured?
FEMA's National Risk Index (NRI) calculates risk scores for 18 natural hazard types across all U.S. counties and census tracts. The composite score combines Expected Annual Loss (estimated dollar losses from each hazard), Social Vulnerability (demographic factors affecting disaster impact), and Community Resilience (ability to recover). Percentile scores rank each county against all 3,144 U.S. counties, and risk ratings range from Very Low to Very High.
Why is Scott County higher risk than average?
Scott County's composite risk score of 85th percentile is above the Iowa state average of 40th percentile. This elevated risk is driven by flooding exposure (88th percentile), along with tornado and earthquake and wildfire risk. Geographic location, terrain, climate patterns, and proximity to flood zones or fault lines all influence a county's risk profile.
By Evan Brooks, Data EditorUpdated Reviewed by Evan Brooks, Data Editor

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.