Enter any address in Tripp County, South Dakota to see its FEMA flood zone
Flash flooding from intense rainfall events is the primary flood hazard in Tripp County. Over the last 30 years, NOAA Storm Events data indicates 21 flood events and 9 flash flood events have been recorded in the county. Recent examples include flash flooding in June 2024 when training thunderstorms produced 2 to 5 inches of rain in under three hours, leading to inundated roads. In June 2023, heavy rainfall also caused flash flooding, inundating county roads and overwhelming culverts.
Residents in areas prone to rapid runoff, particularly those near smaller waterways or in low-lying locations, should be particularly aware of flood risks. Homeowners and real estate agents should consult detailed flood zone maps to understand specific property-level risks, as flood insurance requirements and potential impacts can vary significantly based on location and elevation relative to flood levels.
Summary generated from NOAA storm narratives and NFIP claim data for this county. Not predictive.
5 NOAA storm reports from this county describe what happened, in the words of the meteorologists who were there.
Tripp County, South Dakota has recorded 30 flood-related events since 1996 according to NOAA's Storm Events Database, including 9 flash floods and 21 river or area floods. The county has received 20 federal disaster declarations, 9 of which involved flooding or coastal storms. Enter any address above to check its FEMA flood zone designation.
FEMA Disaster Declarations (1976–2024)
Source: OpenFEMA Disaster Declarations Summaries.
| Declaration | Type | Date |
|---|---|---|
| Severe Storms, Straight-line Winds, And Flooding | Flood | Jun 16, 2024 |
| Severe Winter Storms And Snowstorm | Winter Storm | Dec 12, 2022 |
| Covid-19 | Biological | Jan 20, 2020 |
| Covid-19 Pandemic | Biological | Jan 20, 2020 |
| Severe Storms, Tornadoes, And Flooding | Severe Storm | Jun 30, 2019 |
| Severe Storms And Flooding | Flood | May 21, 2019 |
| Severe Winter Storm, Snowstorm, And Flooding | Flood | Mar 13, 2019 |
| Flooding | Flood | Mar 10, 2010 |
| Severe Winter Storm And Snowstorm | Severe Storm | Dec 23, 2009 |
| Severe Storms And Flooding | Severe Storm | Jun 2, 2008 |
NOAA Storm Events Database (1996–2025)
Source: NOAA National Weather Service Storm Events Database.
| Type | Date | Damage |
|---|---|---|
| Flood | Jun 20, 2024 | 1.00K |
| Flash Flood | Jun 20, 2024 | 30.00K |
| Flash Flood | Jun 22, 2023 | 0.00K |
| Flood | May 27, 2019 | 0.00K |
| Flood | May 24, 2019 | 0.00K |
| Flood | May 21, 2019 | 0.00K |
| Flood | Mar 20, 2019 | 0.00K |
| Flood | Mar 14, 2019 | 0.00K |
| Flash Flood | Aug 10, 2019 | 0.00K |
| Flood | Jul 7, 2019 | 0.00K |
Flood — Jun 20, 2024
Training thunderstorms dumped 2 to 5 inches of rain in less than 3 hours over portions of south-central South Dakota. Runoff from the heavy rain caused several roads to be inundated with water and debris.
Flash Flood — Jun 20, 2024
Training thunderstorms dumped 2 to 5 inches of rain in less than 3 hours over portions of south-central South Dakota. Runoff from the heavy rain caused several roads to be inundated with water and debris.
Flash Flood — Jun 22, 2023
Runoff from heavy rain caused flooding across portions of Tripp County. Flash flooding developed; which inundated several county roads, overwhelmed culverts, and caused ponding of water in fields.
Flood — May 27, 2019
Several days of heavy rain, along with major to record flooding the previous week, led to more flooding across portions of the western South Dakota plains and foothills of the Black Hills. The period of wet weather culminated with heavy rain and thunderstorms over the Rapid City area during the afternoon and evening of May 31, which led to widespread flooded roads.
Flood — May 24, 2019
A powerful storm system slowly moved from the Four Corners region northeastward through the Plains, leading to a prolonged period of precipitation across western South Dakota May 20-22. This three day period was among the coldest, wettest, and snowiest on record for late May, with several temperature and precipitation records set. Runoff from the rain and melting snow led to flooding of creeks,...
Source: NOAA National Weather Service Storm Events Database.
FEMA assigns flood zone designations to areas in Tripp County, South Dakota:
AE High Risk — 1% annual chance of flooding. Insurance required.
VE Very High Risk — Coastal flooding with wave action.
X (Shaded) Moderate Risk — 500-year floodplain.
X Low Risk — Outside major floodplains.
Properties in Tripp County, South Dakota that are in FEMA-designated Special Flood Hazard Areas (zones A and V) with federally backed mortgages are required to carry flood insurance.
Even outside high-risk zones, flood insurance is recommended. From 2014 to 2024, nearly one-third of NFIP claims came from outside the high-risk Special Flood Hazard Area.
Visit FloodSmart.gov to find an agent and get a quote.