riskbycounty
FEMA NRI v1.20Released December 2025Methodology

Terrebonne Parish Disaster Risk

Terrebonne Parish, Louisiana

FEMA Risk Rating

Relatively Moderate

NRI score (0–100 relative scale)

94.2

FEMA composite county value

State Rank

#8

of 64, sorted high to low by RiskByCounty

Flood NRI score

94.0

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.

Hurricane

98.4 / 100

Flood

94.0 / 100

Higher of FEMA Coastal Flooding (94.0) and Inland Flooding (81.9) NRI scores.

Tornado

92.9 / 100

Earthquake

54.8 / 100

Wildfire

23.3 / 100

FEMA NRI data summary

Selected hazard scores for Terrebonne Parish

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

Hurricane
98.4
Flood
94.0
Tornado
92.9
Earthquake
54.8
Wildfire
23.3

Higher of FEMA Coastal Flooding and Inland Flooding NRI scores

Displayed flood score
94.0
Coastal Flooding
94.0
Inland Flooding
81.9

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

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Frequently Asked Questions

How many Louisiana county records are included?
RiskByCounty includes 64 Louisiana county records from FEMA NRI v1.20 (December 2025).
Which FEMA county ratings appear in Louisiana?
FEMA NRI v1.20 (December 2025) county rating counts for Louisiana: Very Low: 21; Relatively Low: 19; Relatively Moderate: 17; Relatively High: 7; Very High: 0; Not available: 0.
How complete are the five selected hazard fields for Louisiana?
FEMA NRI v1.20 (December 2025) availability among 64 county records: Flood: 64 of 64; Wildfire: 64 of 64; Tornado: 64 of 64; Earthquake: 64 of 64; Hurricane: 64 of 64. RiskByCounty displays five selected hazard categories out of FEMA's 18.
What FEMA NRI information is available for Terrebonne Parish, LA?
Terrebonne Parish has an official FEMA NRI v1.20 composite rating of Relatively Moderate and an NRI score (0–100 relative scale) of 94.2. RiskByCounty ranks it 8th of 64 Louisiana county records when sorting the FEMA composite NRI scores from high to low.
Which selected hazard scores are shown for Terrebonne Parish?
RiskByCounty displays five selected hazard categories out of FEMA's 18 using FEMA NRI v1.20 (December 2025). For Terrebonne Parish, Hurricane: 98.4; Flood: 94.0; Tornado: 92.9; Earthquake: 54.8; Wildfire: 23.3.
How is flood displayed for Terrebonne Parish?
RiskByCounty's flood display is the higher of FEMA Coastal Flooding and Inland Flooding NRI scores. For Terrebonne Parish, Coastal Flooding is 94.0, Inland Flooding is 81.9, and the displayed flood score is 94.0.

Counties with Similar Risk

Livingston Parish

Louisiana

+0.2

Relatively High

NRI score 94.5

Lafayette Parish

Louisiana

+0.9

Relatively High

NRI score 95.2

Tangipahoa Parish

Louisiana

-0.9

Relatively Moderate

NRI score 93.3

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.

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