Which county in South Dakota has the lowest flood risk?

Bennett has the lowest flood risk in South Dakota, at 22.2.

What is the flood risk in Bennett?

Bennett is ranked #1 in South Dakota for flood risk, at 22.2.

What are the top counties in South Dakota for flood risk?

Bennett (22.2), then Hand (44.3), and Minnehaha (44.6). The full top 25 is in the table on this page.

How is this flood risk ranking calculated?

Counties in South Dakota are ranked by flood risk (FEMA National Risk Index, FEMA NRI v1.20), lowest first. Values describe the county, not an individual property. Source vintage is shown on the page.

How does South Dakota compare to the rest of the US for flood risk?

This list is South Dakota only. See the national ranking of the lowest counties for flood risk at hearthmap.app/best/lowest-flood-risk.

Lowest Flood Risk Counties in South Dakota (2026)

Lowest counties for flood risk in South Dakota

Top 25 of 66 counties with data.

Ranked by flood risk (FEMA National Risk Index, FEMA NRI v1.20), lowest first.

Lowest counties for flood risk in South Dakota

Rank	County	Value
01	Bennett22.2 County page
02	Hand44.3 County page
03	Minnehaha44.6 County page
04	Harding48.6 County page
05	Pennington49.2 County page
06	Dewey53.5 County page
07	Lincoln58.2 County page
08	Day58.3 County page
09	Jackson58.8 County page
10	Oglala Lakota65.1 County page
11	Edmunds65.4 County page
12	Davison65.5 County page
13	Lawrence65.8 County page
14	Bon Homme66.9 County page
15	Corson67.1 County page
16	Deuel68.0 County page
17	Lyman69.0 County page
18	Perkins71.8 County page
19	Lake72.6 County page
20	Faulk72.9 County page
21	Jones73.0 County page
22	Brookings74.2 County page
23	Kingsbury74.5 County page
24	Roberts75.4 County page
25	Meade75.9 County page

How this ranking works

This page ranks South Dakota counties by flood risk, sorted so the lowest places appear first. Click any county to see its housing, schools, crime, and demographics in detail.

For flood risk, a lower value is generally more favorable, so the top of the list is the lowest. Want to weigh flood risk against schools, taxes, commute, and more at once? Use the live map to build a custom match.

Data comes from public sources. Source attribution and the exact data vintage are shown above and on the full map of flood risk.

Frequently asked questions

Which county in South Dakota has the lowest flood risk?: Bennett has the lowest flood risk in South Dakota, at 22.2.
What is the flood risk in Bennett?: Bennett is ranked #1 in South Dakota for flood risk, at 22.2.
What are the top counties in South Dakota for flood risk?: Bennett (22.2), then Hand (44.3), and Minnehaha (44.6). The full top 25 is in the table on this page.
How is this flood risk ranking calculated?: Counties in South Dakota are ranked by flood risk (FEMA National Risk Index, FEMA NRI v1.20), lowest first. Values describe the county, not an individual property. Source vintage is shown on the page.
How does South Dakota compare to the rest of the US for flood risk?: This list is South Dakota only. See the national ranking of the lowest counties for flood risk at hearthmap.app/best/lowest-flood-risk.