Enter any address in St. Croix County, Wisconsin to see its FEMA flood zone
Flash flooding from thunderstorms dominates flood events in St. Croix County. Over the last 30 years, NOAA Storm Events data shows 16 flash flood events and 3 general flood events. Recent examples include heavy rainfall causing flash flooding in April 2019 and July 2015, with some storms producing rainfall rates of 1 to 3 inches per hour.
National Flood Insurance Program (NFIP) claims data indicates that properties in Zone A have experienced the most claims, with an average payout of $33,728. However, properties in Zone X have seen a higher average water depth of 1.4 feet, despite fewer claims and lower average payouts. Homeowners in Zone A, Zone X, and those without a Base Flood Elevation (BFE) should pay particular attention to flood risk.
Summary generated from NOAA storm narratives and NFIP claim data for this county. Not predictive.
9 NOAA storm reports from this county describe what happened, in the words of the meteorologists who were there.
St. Croix County, Wisconsin has recorded 19 flood-related events since 1996 according to NOAA's Storm Events Database, including 16 flash floods and 3 river or area floods. The county has received 11 federal disaster declarations, 2 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 |
|---|---|---|
| Covid-19 | Biological | Jan 20, 2020 |
| Covid-19 Pandemic | Biological | Jan 20, 2020 |
| Severe Storms, Flooding, And Mudslides | Severe Storm | Jun 20, 2013 |
| Hurricane Katrina Evacuation | Hurricane | Aug 29, 2005 |
| Severe Storms, Tornadoes And Flooding | Tornado | Sep 2, 2002 |
| Flooding, Severe Storms And Tornadoes | Flood | Apr 10, 2001 |
| Severe Storms,straigh Line Winds, Tornadoes,rain,and Floodi | Severe Storm | Jun 18, 1998 |
| Severe Storms, Tornadoes & Flooding | Severe Storm | Jun 7, 1993 |
| Drought | Drought | Jun 17, 1976 |
| Flooding | Flood | May 1, 1969 |
NOAA Storm Events Database (1996–2025)
Source: NOAA National Weather Service Storm Events Database.
| Type | Date | Damage |
|---|---|---|
| Flash Flood | Jun 29, 2020 | 8.00M (1 deaths) |
| Flash Flood | Apr 17, 2019 | 0.00K |
| Flash Flood | Jul 6, 2015 | 0.00K |
| Flash Flood | Jul 6, 2015 | 360.00K |
| Flash Flood | Jun 21, 2013 | 125.00K |
| Flash Flood | Jun 21, 2013 | 0.00K |
| Flash Flood | Jun 21, 2013 | 5.00K |
| Flash Flood | Jun 26, 2010 | 0.00K |
| Flash Flood | Aug 11, 2010 | 0.00K |
| Flash Flood | Jul 8, 2005 | — |
Flash Flood — Jun 29, 2020
During the evening of Sunday, June 28th, a complex of thunderstorms that developed across Iowa previously, moved slowly northward across southern Minnesota and western Wisconsin before stalling Monday morning. During the onset of the heavier rainfall, a few storms caused wind damage near Tainter Lake and Colfax, but most of the damage was minor with a few large tree limbs and power lines blown ...
Flash Flood — Apr 17, 2019
During the morning of Wednesday, April 17th, a large area of showers developed across southern Minnesota. Several embedded thunderstorms developed after sunrise and moved into west central Wisconsin. A very anomalous moist atmosphere was in place and rainfall was very efficient. One storm moved from Hastings Minnesota, and into west central Wisconsin near River Falls. Rainfall rates were high, ...
Flash Flood — Jul 6, 2015
The evening of Sunday, July 5th, a line of thunderstorms developed along a frontal boundary from west central to northeast Minnesota. By 2 to 3 am CST, numerous thunderstorms began to develop in east central Minnesota, ahead of the main line. As additional thunderstorms congealed with the main line, and deep moisture continued to surge toward western Wisconsin, the added effect of high precipi...
Flash Flood — Jun 21, 2013
Severe thunderstorms in Minnesota moved into west central Wisconsin and produced some damaging winds, torrential rainfall and hail. ||Up to 2.5 inches of rain fell in a 30 minute period in portions of west central Wisconsin causing roads and bridges to be flooded. Responders rescued people in vehicles that were disabled due to the flood waters in the Hudson and Roberts areas. No injuries were r...
Flash Flood — Jun 26, 2010
A complex of thunderstorms that moved across southern Minnesota during the late afternoon and evening hours of June 26th, moved into west-central Wisconsin and produced some minor wind damage in Maiden Rock. However, most of the severe weather was related to flash flooding that caused several areas to be impassible during the height of the storm. Some of the most significant flooding occurred P...
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 St. Croix 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 St. Croix 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.