Day County, SD Environment & Hazard Risk

• Winter weatherRelatively Moderate$217K/yr expected annual loss, about 23 events a year
• Strong windRelatively Moderate$1.1M/yr expected annual loss, about 2.9 events a year
• WildfireRelatively Low$259K/yr expected annual loss, about once every 904 years
• Ice stormRelatively Moderate$243K/yr expected annual loss, about once every 2 years
• Cold waveRelatively Moderate$2.2M/yr expected annual loss, about 14 events a year
• HailRelatively Low$416K/yr expected annual loss, about 4.0 events a year
• LandslideVery Low$599/yr expected annual loss, about once every 7 years
• TornadoRelatively Low$695K/yr expected annual loss, about once every 2 years
• Heat waveVery Low$65.1K/yr expected annual loss, about 2.5 events a year
• EarthquakeVery Low$12.2K/yr expected annual loss, about once every 4,717 years
• DroughtVery Low$126/yr expected annual loss, about once every 10 years
• LightningVery Low$8,330/yr expected annual loss, about 33 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

12 of 4,240 (0.3%)

Homes in high-risk flood zones

0

Flood claims since 1978

257

Claims paid since 1978

$4.2M

• Hail172
• Thunderstorm Wind169
• Blizzard73 · 1 death
• High Wind44
• Extreme Cold/Wind Chill42
• Heavy Snow34
• Winter Storm30
• Flood25
• Tornado20
• Drought14

• Flood06/01/2019

  Pierpont, Day County

  $11.5M damage

  What happened

  Spring snowmelt and heavy rain flooding from March, April, and May continued into June. This combined with above normal June rainfall resulted in hundreds of thousands of acres of crops damaged or unplanted across central and northeast South Dakota. For the entire state of South Dakota, nearly 4 million acres of crops were left unplanted as a result of the flooding. Total damaged or unplanted crop loss estimates for central and northeast South Dakota were near 307 million dollars.

• Blizzard12/23/2020

  Day

  1 death

  What happened

  A woman driving to work from her home in rural Amherst to Bristol became disoriented in the blizzard and drove into a slough and died. She was recovered over a month later on January 29th.

• Thunderstorm Wind104 kt wind07/31/2008

  Webster, Day County

  10 injured

  What happened

  The lumber yard and cabinet shop in Webster were destroyed. Power lines and poles were downed along with hundreds of trees. A semi was overturned on Highway 12 west of Webster injuring the driver. Several other injuries occurred in Day County as a result of the windstorm. The injuries were minor to moderate with scrapes and abrasions to lower back injuries and a broken collar bone.

• Flood07/01/2005

  Day

  $7.6M damage

  What happened

  Heavy rains of three to seven inches fell across far eastern Brown, western and northern Day, and most of Marshall counties in late June causing widespread flooding. The flood waters slowly receded through July 10th. Many townhip roads and highways were flooded along with thousands of acres of cropland. Water surrounded several homes resulting in people being rescued. Some of the homes were flooded. Many bridges were damaged and roads and culverts were washed out. In Day county, 30 roads were washed out and 15 bridges needed repairs.

• Thunderstorm Wind70 kt wind07/23/2005

  Waubay, Day County

  4 injured

  What happened

  Eighty mph winds or higher destroyed a 14 by 40 foot trailer home at Enemy Swim Lake. The four occupants inside were not seriously injured. The winds also damaged the roofs of two other homes, damaged several boat lifts and docks, downed some power lines and poles, damaged the school, and downed many trees and branches.

• Flood05/12/1998

  Day

  $1.9M damage

  What happened

  Heavy rain of 2 to 4 inches with some amounts nearing 5 inches fell across a large part of the six county area mainly on the evening of the 11th. This round of heavy rain only exacerbated the already extensive flooding occurring from many years of above normal precipitation. Day county was most affected by this round of heavy rain where area lakes were already at new record levels. Blue Dog, Waubay, Rush, and Bitter Lake in Day County were just a few of the lakes hard hit again. In fact, extensive sandbagging was done around Blue Dog Lake to save many homes. Some residents of Blue Dog Lake said they had never seen the lake so high in over 35 years of living there. Many more roads became flooded after this heavy rain event and will remain so for quite some time. Spots on US Highway 12 and US Highway 25 became flooded near Holmquist and Webster. Also, more of US Highway 212 4 miles east of Clark was flooded. Many area roads had to once again be built up. There remained only one road open to the town of Grenville in northeast Day County. Mail was delayed to many areas due to the road problems. Some school bus drivers said they had never seen rural gravel roads this...

• Web Water Development AssociationServes 20,750 · Surface water · PrivateNo health violations
• Brown-Day-Marshall RwsServes 5,673 · Groundwater · PrivateNo health violations
• Clark Rural Water SystemServes 2,325 · Groundwater · PrivateNo health violations
• WebsterServes 1,728 · Purchased surface water · Local governmentNo health violations
• Clark Rural Water-KampeskaServes 602 · Groundwater · PrivateNo health violations
• WaubayServes 473 · Groundwater · Local governmentNo health violations
• BristolServes 288 · Purchased surface water · Local government1 health violation+1 monitoring or reporting
• RoslynServes 181 · Purchased surface water · Local governmentNo health violations