riskbycounty
FEMA NRI v1.20Released December 2025Methodology

Ozaukee County Disaster Risk

Ozaukee County, Wisconsin

FEMA Risk Rating

Relatively Low

NRI score (0–100 relative scale)

50.3

FEMA composite county value

State Rank

#47

of 72, sorted high to low by RiskByCounty

Flood NRI score

58.3

higher coastal/inland value

Hazard Risk Breakdown

Five selected hazard categories out of FEMA's 18. Values are FEMA NRI v1.20 scores on a 0–100 relative scale.

Tornado

59.3 / 100

Flood

58.3 / 100

Higher of FEMA Coastal Flooding (31.0) and Inland Flooding (58.3) NRI scores.

Earthquake

26.4 / 100

Wildfire

19.5 / 100

Hurricane

7.5 / 100

FEMA NRI data summary

Selected hazard scores for Ozaukee County

Among the five hazard categories displayed by RiskByCounty, tornado has the highest NRI score for this county.

Tornado
59.3
Flood
58.3
Earthquake
26.4
Wildfire
19.5
Hurricane
7.5

Higher of FEMA Coastal Flooding and Inland Flooding NRI scores

Displayed flood score
58.3
Coastal Flooding
31.0
Inland Flooding
58.3

These five categories are a selected subset of FEMA's 18 natural hazards. FEMA's composite score and official rating are separate fields in the National Risk Index dataset.

FEMA National Risk Index documentation

Official Ready.gov resource

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Frequently Asked Questions

How many Wisconsin county records are included?
RiskByCounty includes 72 Wisconsin county records from FEMA NRI v1.20 (December 2025).
Which FEMA county ratings appear in Wisconsin?
FEMA NRI v1.20 (December 2025) county rating counts for Wisconsin: Very Low: 15; Relatively Low: 47; Relatively Moderate: 9; Relatively High: 1; Very High: 0; Not available: 0.
How complete are the five selected hazard fields for Wisconsin?
FEMA NRI v1.20 (December 2025) availability among 72 county records: Flood: 72 of 72; Wildfire: 72 of 72; Tornado: 72 of 72; Earthquake: 72 of 72; Hurricane: 66 of 72. RiskByCounty displays five selected hazard categories out of FEMA's 18.
What FEMA NRI information is available for Ozaukee County, WI?
Ozaukee County has an official FEMA NRI v1.20 composite rating of Relatively Low and an NRI score (0–100 relative scale) of 50.3. RiskByCounty ranks it 47th of 72 Wisconsin county records when sorting the FEMA composite NRI scores from high to low.
Which selected hazard scores are shown for Ozaukee County?
RiskByCounty displays five selected hazard categories out of FEMA's 18 using FEMA NRI v1.20 (December 2025). For Ozaukee County, Tornado: 59.3; Flood: 58.3; Earthquake: 26.4; Wildfire: 19.5; Hurricane: 7.5.
How is flood displayed for Ozaukee County?
RiskByCounty's flood display is the higher of FEMA Coastal Flooding and Inland Flooding NRI scores. For Ozaukee County, Coastal Flooding is 31.0, Inland Flooding is 58.3, and the displayed flood score is 58.3.

Counties with Similar Risk

Langlade County

Wisconsin

-0.8

Relatively Low

NRI score 49.6

Burnett County

Wisconsin

-1.0

Relatively Low

NRI score 49.3

Richland County

Wisconsin

+1.2

Relatively Low

NRI score 51.6

Published by RiskByCounty

County summaries are deterministic transformations of frozen FEMA county fields. No external subject-matter reviewer is credited.

Published · Updated

Data Source

County data sourced from FEMA National Risk Index v1.20, released December 2025. Values are labeled NRI score (0–100 relative scale). RiskByCounty displays five selected hazard categories out of FEMA's 18; flood is the higher of the Coastal Flooding and Inland Flooding source scores.

RiskByCounty presents county-level source fields and deterministic arithmetic summaries.

Explore more data for Ozaukee County

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