riskbycounty
FEMA NRI v1.20Released December 2025Methodology

Yolo County Disaster Risk

Yolo County, California

FEMA Risk Rating

Relatively Moderate

NRI score (0–100 relative scale)

91.4

FEMA composite county value

State Rank

#38

of 58, sorted high to low by RiskByCounty

Flood NRI score

89.6

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.

Earthquake

97.4 / 100

Flood

89.6 / 100

Higher of FEMA Coastal Flooding (Not available) and Inland Flooding (89.6) NRI scores.

Wildfire

87.0 / 100

Tornado

22.4 / 100

FEMA NRI data summary

Selected hazard scores for Yolo County

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

Earthquake
97.4
Flood
89.6
Wildfire
87.0
Tornado
22.4
Hurricane
Not available

Higher of FEMA Coastal Flooding and Inland Flooding NRI scores

Displayed flood score
89.6
Coastal Flooding
Not available
Inland Flooding
89.6

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

Continue to Ready.gov for federal emergency-planning information maintained outside RiskByCounty.

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Frequently Asked Questions

How many California county records are included?
RiskByCounty includes 58 California county records from FEMA NRI v1.20 (December 2025).
Which FEMA county ratings appear in California?
FEMA NRI v1.20 (December 2025) county rating counts for California: Very Low: 3; Relatively Low: 7; Relatively Moderate: 17; Relatively High: 22; Very High: 9; Not available: 0.
How complete are the five selected hazard fields for California?
FEMA NRI v1.20 (December 2025) availability among 58 county records: Flood: 58 of 58; Wildfire: 58 of 58; Tornado: 58 of 58; Earthquake: 58 of 58; Hurricane: 8 of 58. RiskByCounty displays five selected hazard categories out of FEMA's 18.
What FEMA NRI information is available for Yolo County, CA?
Yolo County has an official FEMA NRI v1.20 composite rating of Relatively Moderate and an NRI score (0–100 relative scale) of 91.4. RiskByCounty ranks it 38th of 58 California county records when sorting the FEMA composite NRI scores from high to low.
Which selected hazard scores are shown for Yolo County?
RiskByCounty displays five selected hazard categories out of FEMA's 18 using FEMA NRI v1.20 (December 2025). For Yolo County, Earthquake: 97.4; Flood: 89.6; Wildfire: 87.0; Tornado: 22.4.
How is flood displayed for Yolo County?
RiskByCounty's flood display is the higher of FEMA Coastal Flooding and Inland Flooding NRI scores. For Yolo County, Coastal Flooding is Not available, Inland Flooding is 89.6, and the displayed flood score is 89.6.

Counties with Similar Risk

El Dorado County

California

+0.0

Relatively Moderate

NRI score 91.4

Kings County

California

+1.0

Relatively Moderate

NRI score 92.4

Nevada County

California

-1.5

Relatively Moderate

NRI score 89.9

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 Yolo County

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