FEMA flood zones · South Dakota

Campbell County, South Dakota Flood Zone Map

1 flood insurance claims·$165,942 paid·5 federal flood & hurricane disasters

Less than 1% of Campbell County’s area is in FEMA’s high-risk flood zones.

Share of the whole county outline, rivers and lakes included; parts FEMA hasn’t mapped count as zero.

Coastal high risk (V, VE)FloodwayHigh risk (A, AE)Moderate (X, 500-year)Minimal (X)Undetermined (D)

Shaded areas are FEMA’s mapped flood hazard zones in and around Campbell County, South Dakota. Zoomed out they are simplified; at street level the map switches to FEMA’s exact layer. Tap anywhere to check that spot, or search an address above.

In their words

7 NOAA storm reports from Campbell County describe what happened, in the words of the forecasters who covered it. Read the South Dakota flood stories →

Federal disasters

15 federal disaster declarations since 1976, 5 of them floods, coastal storms or hurricanes.

DisasterBegan
Severe Storms And FloodingMay 21, 2019
Severe Winter Storm, Snowstorm, And FloodingMar 13, 2019
Severe Winter StormJan 20, 2010
Severe Winter Storm And SnowstormDec 23, 2009
Severe Storms And FloodingMar 11, 2009
Hurricane Katrina EvacuationSep 6, 2005
Severe Flooding, Sever Winter Storms,heavy Rains High WindsFeb 3, 1997
Severe Winter Storms And Blizzard ConditionsJan 3, 1997

Weather and water disasters only; most recent first. Source: OpenFEMA Disaster Declarations.

Recorded flood events

14 since 1996: 6 flash floods and 8 river or area floods.

EventDateDamage
Flash FloodJul 3, 2022—
FloodMar 25, 2019—
FloodMay 1, 2019—
FloodJun 1, 2019—
FloodApr 1, 2019$9,700
Flash FloodMay 18, 2018—
FloodMay 17, 2018—
Flash FloodMay 17, 2018$34,000

— = no damage estimate in the record. Source: NOAA Storm Events Database.

From the storm reports

Flash Flood · Jul 3, 2022. An area of low pressure and associated frontal boundaries brought several severe thunderstorms to central, north-central, and northeastern South Dakota from the evening of July 3rd to the early morning hours of July 4th. The storms produced high winds of 60 to 77 mph and torrential rainfall. The highest wind gusts include 77 mph one west-northwest of Mellette, 70 mph at Cravens Corner, and 14 miles north of Vivian…

Flood · Mar 25, 2019. Much above normal winter snowfall and melt water/ice jams along with heavy rains in the middle of March brought flooding across parts of central and northeast South Dakota for late March. Rivers and creeks flooded across much of the area along with many fields and roads. The flooding damaged many of the roads and culverts across the region. Some structures were also flooded. Lake levels also rose threatening homes…

Flood · May 1, 2019. March and April snowmelt and heavy rain flooding along with above normal May precipitation resulted in hundreds of thousands of acres of crops damaged or delayed/unplanted across central and northeast South Dakota. The widespread flooding continued into June with millions of dollars of loss.

Flood · Jun 1, 2019. 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 f…

National Weather Service narratives, lightly trimmed. Source: NOAA Storm Events Database.

The zones you’ll see on the map

Every colour on the map above is a place on this drawing: where the ground sits relative to the flood FEMA plans for.

Cross-section of a river floodplainDiagram: a river valley. The floodway is the channel and the land beside it; the 1%-annual-chance flood surface (the base flood elevation) covers the valley floor as zone A or AE; a narrow band higher up is shaded X, the 0.2% floodplain; higher ground is X.0.2% CHANCE A YEAR (500-YEAR)BASE FLOOD ELEVATION · 1% A YEARXAEFloodwayAEX
  1. A / AE Inside the 1%-a-year floodplain: about a 26% chance of flooding over a 30-year mortgage. AE has a mapped base flood elevation; plain A does not.
  2. Floodway The channel and the land beside it that has to be kept clear enough to carry the flood. Building here is tightly limited.
  3. X shaded The 0.2% (500-year) floodplain, plus some levee-protected and very shallow flood areas.
  4. X Outside both lines. No federal requirement to insure, which is not the same as no risk.

Every flood zone code explained →

Flood insurance in Campbell County

If a building in Campbell County is in a high-risk zone (A or V) and its mortgage comes from a federally regulated or insured lender, or is federally backed, flood insurance is required.

Outside those zones it is optional, and often worth having: from 2014 to 2024 nearly one-third of NFIP claims came from outside the high-risk Special Flood Hazard Area. Since Risk Rating 2.0, NFIP premiums are set for each building, so the only reliable price is a quote: FloodSmart.gov or a local agent.