Moody County, SD Environment & Hazard Risk

• Ice stormRelatively High$1.24M/yr expected annual loss, about once every 1 year
• Winter weatherRelatively Moderate$180K/yr expected annual loss, about 19 events a year
• HailRelatively Low$564K/yr expected annual loss, about 5.4 events a year
• TornadoRelatively Low$1.94M/yr expected annual loss, about once every 2 years
• DroughtRelatively Low$324K/yr expected annual loss, about 12 events a year
• WildfireVery Low$58.62K/yr expected annual loss, about once every 1,873 years
• Cold waveRelatively Low$844K/yr expected annual loss, about 11 events a year
• Strong windRelatively Low$469K/yr expected annual loss, about 3.7 events a year
• Heat waveVery Low$171K/yr expected annual loss, about 3.7 events a year
• LandslideVery Low$167/yr expected annual loss, about once every 18 years
• EarthquakeVery Low$12.49K/yr expected annual loss, about once every 2,865 years
• LightningVery Low$14.96K/yr expected annual loss, about 37 events a year

Bars show the national percentile score (0 to 100) for each hazard. Dollar figures are expected annual losses to buildings, people and crops. Not rated here: avalanche, coastal flooding, hurricane, riverine flooding, tsunami, volcanic activity.

Check the flood zone for an address

Homes with flood insurance

16 of 4,351 (0.4%)

Homes in high-risk flood zones

165

Insured in high-risk zones

13 (8%)

Flood claims since 1978

59

Claims paid since 1978

$760K

• Hail112
• Winter Weather98 · 1 death
• Flood91
• Thunderstorm Wind79
• Winter Storm38
• Drought38
• High Wind38
• Blizzard30
• Extreme Cold/Wind Chill22
• Cold/Wind Chill18

• Flood06/01/2019

  Colman, Moody County

  $15.79M damage

  What happened

  During crop planting season, prolonged flooding led to the loss of or inability to plant crops across the area. Crop loss estimates provided by the United States Department of Agriculture.

• Ice Storm11/15/1996

  Moody

  1 death, 2 injured, $400K damage

  What happened

  An ice storm consisting of several periods of freezing rain caused widespread damage and paralyzed travel. Widespread damage occurred to electrical poles and lines, leaving thousands without power for up to four days. Numerous accidents occurred, including many vehicles which slid off the road. One fatality occurred in a semi accident on Interstate 90 near Plankinton on November 14th. Two fatalities occurred 9 miles south of Coleman when a car slid off a gravel road and into a stream, drowning the occupants, also on November 14th. A school bus slid into a ditch near Lennox on November 18th, causing four minor injuries. Several injuries due to falls were reported in the Sioux Falls area. Many surfaces were coated with more than an inch of ice, making gravel roads as slippery as paved roads. Tree damage was widespread with tree debris blocking several roads and siedwalks. Some farm buildings and other small structures were damaged by the weight of ice and snow on roofs. Damage continued past the ending of the ice storm, including some damage when ice melted unevenly during later milder weather. The total extent of the damage was expected to be unknown for a long period.

• Winter Weather01/03/2020

  Moody

  1 death, 1 injured

  What happened

  Snowfall totaled 1.1 inches in Flandreau and 1.0 inch 11 miles north of Colman. Despite the lesser snowfall amounts, winds gusted as high as 33 mph at Flandreau which resulted in visibility briefly as low as one half mile. The following morning, a fatality (indirect) occurred when a northbound pickup pulling a trailer lost control on icy Interstate 29 west of Flandreau and rolled in the median, coming to rest on its roof. The driver, who was not wearing a seat belt, was thrown into the southbound lane and struck by a southbound SUV. A passenger in the pickup was also injured (indirect).

• Drought10/01/2023

  Moody

  $6.53M damage

  What happened

  Extreme (D3) drought conditions improved to severe (D2) by mid-month. Crop damage is an estimate from insured losses. Information provided by the United States Department of Agriculture.

• Hail2" hail06/19/1996

  Flandreau, Moody County

  $1.2M damage

  What happened

  Hail destroyed corn, bean, strawberry, and other crops over a wide area. The hail also broke windows and otherwise damaged cars and buildings. The damage was especially severe due to the long duration of the hail.

• Thunderstorm Wind65 kt wind05/06/2012

  Flandreau, Moody County

  $1M damage

  What happened

  Thunderstorm winds caused widespread damage in the south part of Flandreau. Roofs on homes, apartment buildings, and other buildings were blown off or damaged. The roof of a large church was blown off, and parts of the roof damaged nearby homes. The Flandreau city office building had part of its south wall blown off, resulting in interior damage to ceiling tiles and insulation. Siding on other walls of this building and on numerous homes was damaged. Tree damage was widespread, including several trees blown down or uprooted. The winds blew down power lines, leaving parts of the city without power for almost three hours.

• Drought07/01/2026

  Moody

• Heat06/29/2026

  Moody

• Drought06/01/2026

  Moody

• Hail1" hail05/25/2026

  Flandreau, Moody County

• Hail0.75" hail05/25/2026

  Sioux Falls Jct, Moody County

• Drought05/01/2026

  Moody

• Drought04/01/2026

  Moody

• Drought03/31/2026

  Moody

• Big Sioux Community Water SystemServes 5,800 · Groundwater · PrivateNo health violations+1 monitoring or reporting
• FlandreauServes 2,372 · Purchased groundwater · Local government1 health violation+1 monitoring or reporting
• ColmanServes 634 · Purchased groundwater · Local governmentNo health violations
• EganServes 241 · Purchased groundwater · Local governmentNo health violations
• TrentServes 206 · Purchased groundwater · Local governmentNo health violations+3 monitoring or reporting
• Pleasant Valley ColonyServes 107 · Groundwater · PrivateNo health violations
• WardServes 41 · Groundwater · Local governmentNo health violations+51 monitoring or reporting