Enter any address in Clinton County, Iowa to see its FEMA flood zone
Flash flooding from summer thunderstorms is a significant flood hazard in Clinton County, IA. Over the past 30 years, NOAA Storm Events data shows 55 flood events and 36 flash flood events. For example, heavy rainfall in July 2025 led to flash flooding in areas near the Mississippi River, including Clinton. Another event in July 2025 saw considerable flash flooding in the Quad Cities area following 2 to 4 inches of rain in a few hours.
National Flood Insurance Program (NFIP) claims data indicates that properties in Zone A have experienced the most claims, with an average payout of $7,825 and an average water depth of 5.2 feet. Properties in Zone X and X_Unshaded also show significant claim payouts, averaging $8,332 and $12,522 respectively, though with lower average water depths. Residents in areas designated as Zone A, as well as those in Zone X and X_Unshaded, should pay close attention to flood risk information.
Summary generated from NOAA storm narratives and NFIP claim data for this county. Not predictive.
32 NOAA storm reports from this county describe what happened, in the words of the meteorologists who were there.
Clinton County, Iowa has recorded 91 flood-related events since 1996 according to NOAA's Storm Events Database, including 36 flash floods and 55 river or area floods. The county has received 23 federal disaster declarations, 13 of which involved flooding or coastal storms. Enter any address above to check its FEMA flood zone designation.
FEMA Disaster Declarations (1965–2020)
Source: OpenFEMA Disaster Declarations Summaries.
| Declaration | Type | Date |
|---|---|---|
| Severe Storms | Severe Storm | Aug 10, 2020 |
| Covid-19 | Biological | Jan 20, 2020 |
| Covid-19 Pandemic | Biological | Jan 20, 2020 |
| Severe Storms And Flooding | Flood | Mar 12, 2019 |
| Severe Storms, Straight-line Winds, And Flooding | Flood | Apr 17, 2013 |
| Severe Storms, Tornadoes, And Flooding | Severe Storm | May 25, 2008 |
| Severe Winter Storm | Severe Ice Storm | Dec 10, 2007 |
| Severe Winter Storms | Severe Storm | Feb 23, 2007 |
| Hurricane Katrina Evacuation | Hurricane | Aug 29, 2005 |
| Severe Storms, Tornadoes, And Flooding | Severe Storm | May 19, 2004 |
NOAA Storm Events Database (1996–2025)
Source: NOAA National Weather Service Storm Events Database.
| Type | Date | Damage |
|---|---|---|
| Flash Flood | Jul 11, 2025 | 0.00K |
| Flash Flood | Jul 10, 2025 | 0.00K |
| Flood | Jul 5, 2024 | 0.00K |
| Flood | Apr 25, 2023 | 0.00K |
| Flood | Jun 28, 2020 | 0.00K |
| Flood | Jun 6, 2020 | 0.00K |
| Flood | May 30, 2019 | 0.00K |
| Flash Flood | May 29, 2019 | 0.00K |
| Flood | May 28, 2019 | 0.00K |
| Flood | Apr 26, 2019 | 0.00K |
Flash Flood — Jul 11, 2025
On July 11th, a line of severe thunderstorms moved across eastern Iowa and produced damaging straight-line winds, tornadoes and heavy rain. Rainfall totals of 2 to 4 inches fell in a few hours across the Quad Cities, on top of heavy rain from the previous night and caused major flash flooding in Davenport. A Considerable Flash Flood warning was issued at 5:26 PM followed by a Flash Flood Emerge...
Flash Flood — Jul 10, 2025
During the evening of July 10th, a line of thunderstorms developed and moved across eastern Iowa. These storms produced isolated large hail and damaging wind gusts in Johnson and Clinton Counties. Based on a video, an EF-U tornado occurred in Jackson county. These storms also produced heavy rain, mainly along and north of interstate 80. Rainfall amounts of 2 to 4.50 inches were reported acros...
Flood — Jul 5, 2024
Rain that fell during the month of June across Minnesota and Wisconsin caused rises on the Mississippi River along the Iowa and Illinois border. Additionally, heavy rain that fell locally in July helped to prolong the crest and delay the river falling below flood stage, especially south of the Wapsipinicon, Rock, and Iowa Rivers.
Flood — Apr 25, 2023
Significant flooding occurred on the mainstem Mississippi largely due to the record snowfall this winter in Minnesota and Wisconsin, frozen ground, rapid snowmelt during the middle of April, and saturated soils. Major flooding was observed at all sites along the Mississippi north of Keokuk Iowa and most sites saw one of their top 10 crests on record.|This flooding had numerous impacts, with ma...
Flood — Jun 28, 2020
Several more rounds of heavy rain across the Wapsipinicon River basin during the last week of June brought a third round of major river flooding to the Wapsipinicon River near De Witt. This flooding continued into the early morning hours of July 1.
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 Clinton County, Iowa:
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 Clinton County, Iowa 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.