Flood Risk by County in South Dakota

South Dakota: 66 counties covered

Across 66 South Dakota counties with a FEMA flood score, the average national percentile is 25.6, but that average hides real spread between counties, which is why each one gets its own page rather than a single statewide number.

• Minnehaha County, 85.5th percentile, Relatively Moderate
• Pennington County, 75.6th percentile, Relatively Moderate
• Lincoln County, 56.6th percentile, Relatively Low
• Brown County, 63.1th percentile, Relatively Low
• Brookings County, 48.4th percentile, Relatively Low
• Meade County, 51.9th percentile, Relatively Low
• Codington County, 65.2th percentile, Relatively Low
• Lawrence County, 57.1th percentile, Relatively Low
• Yankton County, 57.3th percentile, Relatively Low
• Davison County, 35.9th percentile, Relatively Low
• Beadle County, 45.6th percentile, Relatively Low
• Hughes County, 32.6th percentile, Very Low
• Union County, 47.5th percentile, Relatively Low
• Clay County, 28.7th percentile, Very Low
• Oglala Lakota County, 19th percentile, Very Low
• Lake County, 34.1th percentile, Very Low
• Butte County, 33.4th percentile, Very Low
• Roberts County, 38th percentile, Relatively Low
• Charles Mix County, 40.5th percentile, Relatively Low
• Custer County, 19.3th percentile, Very Low
• Todd County, 28.3th percentile, Very Low
• Turner County, 26.7th percentile, Very Low
• Grant County, 17.3th percentile, Very Low
• Hutchinson County, 35.2th percentile, Relatively Low
• Fall River County, 41.5th percentile, Relatively Low
• Bon Homme County, 8.9th percentile, Very Low
• Hamlin County, 16th percentile, Very Low
• Moody County, 26.1th percentile, Very Low
• Spink County, 25.3th percentile, Very Low
• McCook County, 58.4th percentile, Relatively Low
• Tripp County, 37.1th percentile, Relatively Low
• Day County, 20th percentile, Very Low
• Dewey County, 17.4th percentile, Very Low
• Walworth County, 34.8th percentile, Very Low
• Brule County, 28.6th percentile, Very Low
• Kingsbury County, 9.4th percentile, Very Low
• Marshall County, 10.4th percentile, Very Low
• Deuel County, 9.3th percentile, Very Low
• Gregory County, 15.4th percentile, Very Low
• Edmunds County, 8th percentile, Very Low
• Clark County, 5.4th percentile, Very Low
• Corson County, 16.1th percentile, Very Low
• Lyman County, 29.1th percentile, Very Low
• Hanson County, 15th percentile, Very Low
• Bennett County, 4.3th percentile, Very Low
• Hand County, 6.2th percentile, Very Low
• Stanley County, 20th percentile, Very Low
• Douglas County, 10.5th percentile, Very Low
• Perkins County, 4.7th percentile, Very Low
• Aurora County, 13th percentile, Very Low
• Jackson County, 13.6th percentile, Very Low
• Ziebach County, 8.9th percentile, Very Low
• Potter County, 14.6th percentile, Very Low
• Sanborn County, 6.2th percentile, Very Low
• McPherson County, 8th percentile, Very Low
• Miner County, 4.2th percentile, Very Low
• Faulk County, 6.8th percentile, Very Low
• Haakon County, 22th percentile, Very Low
• Mellette County, 8.1th percentile, Very Low
• Buffalo County, 10.8th percentile, Very Low
• Jerauld County, 8.4th percentile, Very Low
• Sully County, 14.1th percentile, Very Low
• Campbell County, 8.7th percentile, Very Low
• Harding County, 3.5th percentile, Very Low
• Hyde County, 11.5th percentile, Very Low
• Jones County, 4.9th percentile, Very Low