Enter any address in Clark County, Wisconsin to see its FEMA flood zone
Flash flooding from summer thunderstorms and river overflow are the dominant flood types in Clark County, WI. In July 2024, slow-moving thunderstorms produced heavy rainfall leading to flooding along County Road O near Greenwood. Earlier, in April 2023, rapid snowmelt combined with a strong spring storm caused the Black River to rise significantly, reaching over 4 feet above flood stage at Black River Falls.
Homeowners in areas designated as Zone A or Zone X_SHADED should pay particular attention to flood risk. NFIP claims data shows that properties in Zone X_SHADED have experienced significant water depths and substantial payouts. While Zone A claims have averaged lower payouts and water depths, they represent a notable portion of total claims. Properties in Zone X, despite fewer claims, have shown the highest average payouts, indicating potential for substantial damage.
Summary generated from NOAA storm narratives and NFIP claim data for this county. Not predictive.
26 NOAA storm reports from this county describe what happened, in the words of the meteorologists who were there.
Clark County, Wisconsin has recorded 37 flood-related events since 1996 according to NOAA's Storm Events Database, including 13 flash floods and 24 river or area floods. The county has received 15 federal disaster declarations, 5 of which involved flooding or coastal storms. Enter any address above to check its FEMA flood zone designation.
FEMA Disaster Declarations (1973–2020)
Source: OpenFEMA Disaster Declarations Summaries.
| Declaration | Type | Date |
|---|---|---|
| Covid-19 | Biological | Jan 20, 2020 |
| Covid-19 Pandemic | Biological | Jan 20, 2020 |
| Severe Storms, Tornadoes, Straight-line Winds, And Flooding | Flood | Jul 18, 2019 |
| Severe Storms, Straight-line Winds, And Flooding | Flood | Jun 15, 2018 |
| Severe Storms, Flooding, And Mudslides | Flood | Sep 21, 2016 |
| Severe Storms And Flooding | Severe Storm | Sep 22, 2010 |
| Hurricane Katrina Evacuation | Hurricane | Aug 29, 2005 |
| Severe Storms And Flooding | Severe Storm | May 7, 2004 |
| Severe Storms, Tornadoes And Flooding | Tornado | Sep 2, 2002 |
| Severe Storms And Flooding | Severe Storm | Jun 21, 2002 |
NOAA Storm Events Database (1996–2025)
Source: NOAA National Weather Service Storm Events Database.
| Type | Date | Damage |
|---|---|---|
| Flash Flood | Jul 7, 2024 | 0.00K |
| Flood | Apr 20, 2023 | 0.00K |
| Flood | Apr 1, 2023 | 0.00K |
| Flash Flood | Jul 15, 2022 | 8.00K |
| Flash Flood | Jul 14, 2020 | 5.00K |
| Flood | Jul 14, 2020 | 0.00K |
| Flood | Apr 17, 2019 | 0.00K |
| Flood | Mar 14, 2019 | 0.00K |
| Flood | Aug 5, 2019 | 0.00K |
| Flood | Jun 18, 2018 | 1.00K |
Flash Flood — Jul 7, 2024
During the evening hours on July 7th a slow moving thunderstorm moved over portions of northwestern Clark County. These storms produced heavy rainfall totals which resulted in some flooding along County Road O near Greenwood. Additionally, other storms produced small hail in Taylor County.
Flood — Apr 20, 2023
A strong spring storm affected much of Wisconsin in the middle of April, providing upwards of 20 of snow in north-central Wisconsin on an already deeper than average snowpack. Subsequent anomalously warm temperatures resulted in a rapid melt of this deep snowpack and rapid rises along the Black River in Central Wisconsin. The highest above flood stage occurred at Black River Falls reaching 6.42...
Flood — Apr 1, 2023
A strong spring storm at the end of March provided over 1 of rainfall in central to northern Wisconsin on a deeper than average snowpack. The rapid runoff resulted in sites along the Black River in central Wisconsin to quickly rise to flood stage for the beginning of April. Minor to moderate flooding was realized at most sites with the highest height recorded at Black River Falls, with 4.17 ft ...
Flash Flood — Jul 15, 2022
Several rounds of storms with heavy rain moved across north-central Wisconsin during the early morning of July 15th. Radar estimates indicate a band of 3 to 5 inches of rain fell from northwest Clark County to the southeast part of the county. This heavy rain caused water to go over a few county roads near Chili (Clark County) and Thorp (Clark County).
Flash Flood — Jul 14, 2020
Thunderstorms with heavy rain repeatedly moved across portions of north-central Wisconsin during the morning and early afternoon of July 14th. These storms produced rainfall amounts of 2 to 4 inches across the northern portions of Clark County. This resulted in some flash flooding occuring with a few roads covered by water near Dorchester and Longwood. The highest reported rainfall total was 4....
Source: NOAA National Weather Service Storm Events Database.
Source: OpenFEMA NFIP Individual Claims (2.25M records analyzed).
FEMA assigns flood zone designations to areas in Clark County, Wisconsin:
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 Clark County, Wisconsin 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.