FEMA NRI v1.20Released December 2025Methodology

North Dakota Disaster Risk

Natural disaster risk data for all 53 counties.

FEMA release

December 2025

Mean county NRI score

22.2

Counties with Data

of 53 total

County risk atlas

North Dakota 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

53/53

Mean county NRI score

22.2

Risk layers

Highest Risk Counties

Burleigh County

Relatively Moderate

NRI score 85.1

Cass County

Relatively Moderate

NRI score 82.4

Ward County

Relatively Low

NRI score 64.8

Sioux County

Relatively Low

NRI score 62.1

Grand Forks County

Relatively Low

NRI score 57.7

Lowest Risk Counties

Slope County

Very Low

NRI score 0.6

Billings County

Very Low

NRI score 0.9

Burke County

Very Low

NRI score 1.0

Renville County

Very Low

NRI score 1.5

Oliver County

Very Low

NRI score 1.7

All North Dakota Counties

County	NRI score	FEMA Rating	Flood	Wildfire	Tornado	Earthquake
Burleigh County	85.1	Relatively Moderate	77.4	84.1	83.0	20.1
Cass County	82.4	Relatively Moderate	80.6	50.5	89.7	24.1
Ward County	64.8	Relatively Low	41.9	79.4	66.1	12.4
Sioux County	62.1	Relatively Low	10.0	80.5	25.0	5.4
Grand Forks County	57.7	Relatively Low	61.7	55.3	60.7	13.0
Williams County	53.7	Relatively Low	42.9	77.4	53.1	18.2
Rolette County	52.9	Relatively Low	21.6	96.4	31.1	15.2
Morton County	49.6	Relatively Low	40.4	73.9	57.3	6.9
Stutsman County	46.4	Relatively Low	26.9	66.9	47.1	12.3
Barnes County	45.9	Relatively Low	41.3	65.4	41.8	5.2
Emmons County	44.3	Relatively Low	30.9	93.2	40.5	17.3
McLean County	43.1	Relatively Low	33.1	77.0	45.5	15.0
Stark County	37.3	Very Low	22.3	54.8	47.9	16.8
Richland County	35.3	Very Low	29.5	54.0	49.6	14.7
McIntosh County	35.2	Very Low	10.8	70.8	25.6	6.2
Walsh County	29.0	Very Low	35.4	79.2	40.3	6.6
McKenzie County	25.0	Very Low	15.3	77.4	33.1	7.8
Benson County	24.3	Very Low	6.7	80.1	20.9	2.3
Mountrail County	21.4	Very Low	11.9	78.8	32.5	5.9
Pembina County	20.9	Very Low	28.7	63.9	21.3	2.3
Bottineau County	18.7	Very Low	11.6	85.0	26.0	12.4
Ramsey County	18.3	Very Low	10.0	79.9	27.2	5.9
Dickey County	15.8	Very Low	6.5	56.0	24.8	7.3
Grant County	14.8	Very Low	6.7	65.4	17.4	3.8
Mercer County	13.9	Very Low	16.4	61.6	28.5	4.3
Ransom County	13.2	Very Low	14.3	59.8	24.1	2.6
Golden Valley County	13.1	Very Low	3.1	49.2	13.2	4.2
Cavalier County	11.8	Very Low	6.8	52.8	16.9	1.9
McHenry County	11.7	Very Low	8.1	87.4	27.6	11.0
Traill County	11.0	Very Low	12.7	23.3	30.0	3.9
LaMoure County	10.9	Very Low	5.5	38.1	20.0	2.9
Dunn County	10.8	Very Low	10.1	83.9	24.0	3.4
Logan County	9.9	Very Low	5.9	55.3	18.1	2.0
Hettinger County	9.2	Very Low	9.7	55.4	25.4	22.4
Wells County	8.6	Very Low	4.9	51.4	22.7	2.1
Nelson County	7.9	Very Low	4.3	67.8	21.5	1.6
Sargent County	7.4	Very Low	2.7	41.3	16.9	2.2
Foster County	7.4	Very Low	3.2	48.4	18.3	1.4
Steele County	6.6	Very Low	2.3	17.0	16.8	0.8
Divide County	5.8	Very Low	6.1	59.1	20.0	12.9
Griggs County	5.1	Very Low	1.7	49.1	16.3	0.6
Sheridan County	5.0	Very Low	4.1	63.3	22.4	5.6
Adams County	4.5	Very Low	2.5	48.0	12.3	4.7
Pierce County	3.2	Very Low	2.5	56.5	15.6	1.5
Kidder County	3.1	Very Low	3.1	45.8	17.0	0.8
Bowman County	2.1	Very Low	2.4	56.7	11.5	7.7
Towner County	2.0	Very Low	1.1	56.8	7.8	0.4
Eddy County	1.8	Very Low	1.4	63.0	14.2	1.2
Oliver County	1.7	Very Low	6.5	44.5	11.7	0.4
Renville County	1.5	Very Low	1.7	37.3	10.5	1.4
Burke County	1.0	Very Low	1.7	46.9	9.5	0.9
Billings County	0.9	Very Low	3.0	65.3	8.5	1.8
Slope County	0.6	Very Low	0.6	38.0	5.5	0.6

Frequently Asked Questions

How many North Dakota county records are included?

RiskByCounty includes 53 North Dakota county records from FEMA NRI v1.20 (December 2025).

Which FEMA county ratings appear in North Dakota?

FEMA NRI v1.20 (December 2025) county rating counts for North Dakota: Very Low: 41; Relatively Low: 10; Relatively Moderate: 2; Relatively High: 0; Very High: 0; Not available: 0.

How complete are the five selected hazard fields for North Dakota?

FEMA NRI v1.20 (December 2025) availability among 53 county records: Flood: 53 of 53; Wildfire: 53 of 53; Tornado: 53 of 53; Earthquake: 53 of 53; Hurricane: 0 of 53. 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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