FEMA NRI v1.20Released December 2025Methodology

Oregon Disaster Risk

Natural disaster risk data for all 36 counties.

FEMA release

December 2025

Mean county NRI score

63.4

Counties with Data

of 36 total

County risk atlas

Oregon hazard exposure by county

FEMA NRI v1.20 scores on a 0–100 relative scale. Toggle the composite and five selected hazard categories out of FEMA's 18. Flood is the higher of Coastal Flooding and Inland Flooding NRI scores.

Counties

36/36

Mean county NRI score

63.4

Risk layers

Highest Risk Counties

Multnomah County

Relatively High

NRI score 98.5

Lane County

Relatively High

NRI score 96.4

Washington County

Relatively High

NRI score 96.0

Marion County

Relatively High

NRI score 95.5

Clatsop County

Relatively High

NRI score 95.1

Lowest Risk Counties

Gilliam County

Very Low

NRI score 2.7

Sherman County

Very Low

NRI score 2.9

Wheeler County

Very Low

NRI score 7.2

Lake County

Very Low

NRI score 19.1

Harney County

Very Low

NRI score 23.7

All Oregon Counties

County	NRI score	FEMA Rating	Flood	Wildfire	Tornado	Earthquake
Multnomah County	98.5	Relatively High	95.5	67.3	47.4	99.6
Lane County	96.4	Relatively High	97.2	68.7	21.0	98.8
Washington County	96.0	Relatively High	93.9	50.9	53.1	99.0
Marion County	95.5	Relatively High	90.5	59.9	22.5	99.1
Clatsop County	95.1	Relatively High	96.4	44.4	12.1	96.5
Clackamas County	94.9	Relatively High	93.7	86.8	38.1	98.6
Douglas County	92.9	Relatively Moderate	95.2	97.8	6.4	97.3
Jackson County	92.5	Relatively Moderate	93.1	99.0	6.5	97.4
Coos County	91.9	Relatively Moderate	87.4	64.8	4.1	98.3
Josephine County	90.2	Relatively Moderate	90.2	99.2	4.9	95.2
Lincoln County	89.9	Relatively Moderate	86.6	50.8	11.2	97.8
Linn County	88.1	Relatively Moderate	86.3	58.4	15.7	97.5
Curry County	86.5	Relatively Moderate	62.2	93.4	3.1	96.7
Deschutes County	84.9	Relatively Moderate	88.9	97.8	8.7	83.0
Benton County	84.4	Relatively Moderate	74.8	37.1	12.7	97.2
Yamhill County	82.9	Relatively Moderate	74.1	52.1	18.4	96.9
Umatilla County	82.3	Relatively Moderate	81.5	96.2	13.0	87.2
Tillamook County	81.3	Relatively Moderate	76.3	43.6	10.8	95.5
Klamath County	77.9	Relatively Low	78.5	94.4	4.3	94.5
Polk County	72.8	Relatively Low	68.2	43.4	12.7	95.4
Columbia County	70.7	Relatively Low	68.2	30.5	13.3	94.5
Wasco County	67.8	Relatively Low	59.2	98.1	4.7	83.0
Baker County	48.2	Relatively Low	47.8	96.1	5.9	78.7
Union County	43.5	Relatively Low	37.5	91.9	6.1	76.7
Malheur County	34.8	Very Low	52.0	91.4	8.8	71.6
Wallowa County	34.0	Very Low	48.9	92.7	4.3	37.7
Crook County	33.6	Very Low	40.5	95.1	3.6	69.5
Grant County	32.1	Very Low	50.2	93.6	2.3	23.4
Hood River County	32.1	Very Low	30.4	94.8	6.6	75.6
Jefferson County	29.9	Very Low	36.6	94.9	3.0	64.4
Morrow County	26.4	Very Low	40.1	92.0	4.2	57.9
Harney County	23.7	Very Low	28.5	95.7	2.5	31.6
Lake County	19.1	Very Low	37.6	89.2	2.0	72.9
Wheeler County	7.2	Very Low	12.3	88.7	1.2	17.9
Sherman County	2.9	Very Low	4.6	90.2	1.5	33.6
Gilliam County	2.7	Very Low	7.0	88.3	1.4	27.9

Frequently Asked Questions

How many Oregon county records are included?

RiskByCounty includes 36 Oregon county records from FEMA NRI v1.20 (December 2025).

Which FEMA county ratings appear in Oregon?

FEMA NRI v1.20 (December 2025) county rating counts for Oregon: Very Low: 12; Relatively Low: 6; Relatively Moderate: 12; Relatively High: 6; Very High: 0; Not available: 0.

How complete are the five selected hazard fields for Oregon?

FEMA NRI v1.20 (December 2025) availability among 36 county records: Flood: 36 of 36; Wildfire: 36 of 36; Tornado: 36 of 36; Earthquake: 36 of 36; Hurricane: 0 of 36. RiskByCounty displays five selected hazard categories out of FEMA's 18.

Official Ready.gov resource

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

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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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