Enter any address in Ross County, Ohio to see its FEMA flood zone
Flash flooding from heavy rainfall events dominates the flood character in Ross County. Between 2004 and 2023, NOAA Storm Events data recorded 77 flood events and 40 flash flood events, resulting in two fatalities. For example, on July 1, 2025, a stalled cold front contributed to heavy rainfall, runoff, and subsequent flooding.
National Flood Insurance Program (NFIP) claims data from Ross County shows that while Zone A areas have the highest number of claims, properties in other zones have experienced significant water depths. Zone UNKNOWN areas averaged 9.1 feet of water depth with an average payout of $5,010, and Zone X_UNSHADED saw an average of 20 feet of water depth with one claim averaging $10,166. Homeowners in areas designated as Zone A, as well as those in Zone UNKNOWN or X_UNSHADED, should pay close attention to flood risk.
Summary generated from NOAA storm narratives and NFIP claim data for this county. Not predictive.
4 NOAA storm reports from this county describe what happened, in the words of the meteorologists who were there.
Ross County, Ohio has recorded 117 flood-related events since 1996 according to NOAA's Storm Events Database, including 40 flash floods and 77 river or area floods. The county has received 16 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 (1968–2020)
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 Landslides | Flood | Feb 5, 2019 |
| Severe Storms | Severe Storm | Jun 29, 2012 |
| Severe Storms And Flooding | Severe Storm | Apr 4, 2011 |
| Hurricane Katrina Evacuation | Hurricane | Aug 29, 2005 |
| Severe Winter Storms, Flooding, And Mudslides | Severe Storm | Dec 22, 2004 |
| Severe Storms And Flooding | Severe Storm | Aug 27, 2004 |
| Severe Storms, Flooding, Mudslides, And Landslides | Severe Storm | Jan 3, 2004 |
| Severe Winter Storm And Record/near Record Snow | Severe Storm | Feb 14, 2003 |
NOAA Storm Events Database (1996–2025)
Source: NOAA National Weather Service Storm Events Database.
| Type | Date | Damage |
|---|---|---|
| Flash Flood | Jun 30, 2025 | 0.00K |
| Flash Flood | Jun 29, 2025 | 0.00K |
| Flood | Jun 29, 2025 | 0.00K |
| Flood | May 8, 2025 | 0.00K |
| Flood | Jun 6, 2025 | 0.00K |
| Flash Flood | Jul 1, 2025 | 2.00K |
| Flood | Jul 1, 2025 | 0.00K |
| Flash Flood | Jul 1, 2025 | 0.00K |
| Flash Flood | Jul 1, 2025 | 20.00K |
| Flash Flood | Jul 1, 2025 | 25.00K |
Flash Flood — Jun 30, 2025
Scattered thunderstorms developed in a warm and humid airmass.
Flash Flood — Jun 29, 2025
Scattered thunderstorms moved through the region in association with an upper level disturbance.
Flood — Jun 29, 2025
Scattered thunderstorms moved through the region in association with an upper level disturbance.
Flood — May 8, 2025
Showers and thunderstorms formed along a stationary front, producing heavy rainfall.
Flood — Jun 6, 2025
Isolated, slow moving showers and thunderstorms produced localized heavy rain and flooding.
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 Ross County, Ohio:
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 Ross County, Ohio 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.