Enter any address in Ontonagon County, Michigan to see its FEMA flood zone
4 NOAA storm reports from this county describe what happened, in the words of the meteorologists who were there.
Ontonagon County, Michigan has recorded 10 flood-related events since 1996 according to NOAA's Storm Events Database, including 5 flash floods and 5 river or area floods. The county has received 8 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 (1977–2020)
Source: OpenFEMA Disaster Declarations Summaries.
| Declaration | Type | Date |
|---|---|---|
| Covid-19 | Biological | Jan 20, 2020 |
| Covid-19 Pandemic | Biological | Jan 20, 2020 |
| Flooding | Flood | Apr 16, 2013 |
| Hurricane Katrina Evacuation | Hurricane | Aug 29, 2005 |
| Flooding | Flood | Apr 10, 2002 |
| Severe Deep Freeze | Freezing | Jan 10, 1994 |
| Blizzards & Snowstorms | Snowstorm | Jan 27, 1978 |
| Drought | Drought | Mar 2, 1977 |
NOAA Storm Events Database (1996–2025)
Source: NOAA National Weather Service Storm Events Database.
| Type | Date | Damage |
|---|---|---|
| Flash Flood | Jul 23, 2025 | 1.60M |
| Flash Flood | Jun 18, 2024 | 50.00K |
| Flood | Apr 13, 2023 | 8.00M |
| Flash Flood | Jun 13, 2022 | 10.00K |
| Flash Flood | Jul 4, 2022 | 20.00K |
| Flood | Apr 28, 2013 | 550.00K |
| Flash Flood | May 25, 2010 | 15.00K |
| Flood | May 11, 2003 | — |
| Flood | Apr 14, 2002 | 212K |
| Flood | Apr 20, 1996 | 40K |
Flash Flood — Jul 23, 2025
A series of training thunderstorms brought flash flooding to portions of Houghton and Ontonagon Counties between 0300 and 0730EST on July 23. Four-hour rainfall totals ranged from two to four inches in the area. The Governor of Michigan declared a state of emergency as a result of the flooding.
Flash Flood — Jun 18, 2024
Heavy rains of 3 to 5 inches from thunderstorms washed out culverts over portions of Ontonagon and Houghton counties during the early morning of the 19th.
Flood — Apr 13, 2023
Rapid melting of much above normal snowpack caused widespread, and at times, extensive flooding over portions of west and central Upper Michigan from the 12th into the 25th. Extensive impacts from the flooding caused Governor Whitmer to declare a state of emergency declaration for eight counties in west and central Upper Michigan on the 21st.
Flash Flood — Jun 13, 2022
Rainfall estimates of 2 to 3 inches from thunderstorms during the day on the 13th caused flash flooding on the south end of Porcupine Mountains State Park. The South Boundary Road was closed from Summit Peak to the Gogebic County line due to water over the road.
Flash Flood — Jul 4, 2022
Heavy rain estimates of 4 to 5 inches from early morning through late afternoon caused a washout of Norwich Road in Ontonagon County 13 miles south of Highway M-64.
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 Ontonagon County, Michigan:
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 Ontonagon County, Michigan 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.