Enter any address in Carroll County, New Hampshire to see its FEMA flood zone
Flash flooding from heavy rainfall events is the dominant flood character in Carroll County. Recent examples include localized flash flooding near Lake Winnipesaukee on August 19, 2024, following heavy thunderstorms, and widespread river and isolated flash flooding on April 12, 2024, exacerbated by rapid snowmelt and saturated ground.
National Flood Insurance Program (NFIP) data indicates that properties in Zone A and Zone X have experienced the most claims, with average payouts of $10,366 and $12,849 respectively, and significant average water depths of 3.6 feet and 5.0 feet. Homeowners in areas designated as Zone A, Zone X, and Zone X_UNSHADED should pay particular attention to flood risk.
Summary generated from NOAA storm narratives and NFIP claim data for this county. Not predictive.
59 NOAA storm reports from this county describe what happened, in the words of the meteorologists who were there.
Carroll County, New Hampshire has recorded 123 flood-related events since 1996 according to NOAA's Storm Events Database, including 38 flash floods and 81 river or area floods. The county has received 35 federal disaster declarations, 6 of which involved flooding or coastal storms. Enter any address above to check its FEMA flood zone designation.
FEMA Disaster Declarations (1973–2024)
Source: OpenFEMA Disaster Declarations Summaries.
| Declaration | Type | Date |
|---|---|---|
| Severe Winter Storm And Flooding | Winter Storm | Apr 3, 2024 |
| Severe Storm And Flooding | Severe Storm | Dec 17, 2023 |
| Severe Storms And Flooding | Flood | Jul 9, 2023 |
| Severe Storm And Flooding | Severe Storm | Dec 22, 2022 |
| Covid-19 | Biological | Jan 20, 2020 |
| Covid-19 Pandemic | Biological | Jan 20, 2020 |
| Severe Winter Storm And Snowstorm | Snowstorm | Mar 13, 2018 |
| Severe Storm And Flooding | Severe Storm | Oct 29, 2017 |
| Severe Winter Storm | Severe Storm | Mar 14, 2017 |
| Severe Winter Storm And Snowstorm | Severe Storm | Feb 8, 2013 |
NOAA Storm Events Database (1996–2025)
Source: NOAA National Weather Service Storm Events Database.
| Type | Date | Damage |
|---|---|---|
| Flash Flood | Aug 19, 2024 | 0.00K |
| Flash Flood | Apr 12, 2024 | 5.00K |
| Flash Flood | Jun 28, 2023 | 0.00K |
| Flash Flood | Dec 18, 2023 | 70.00K |
| Flash Flood | Dec 18, 2023 | 0.00K |
| Flood | Dec 18, 2023 | 0.00K |
| Flash Flood | Dec 18, 2023 | 380.00K |
| Flash Flood | Jul 16, 2023 | 0.00K |
| Flood | Jul 16, 2023 | 0.00K |
| Flood | Jul 11, 2023 | 0.00K |
Flash Flood — Aug 19, 2024
A frontal system brought rounds of showers and thunderstorms on the evening of the 19th. Heavy rainfall of 2-3��� fell near Lake Winnipesaukee in New Hampshire, resulting in localized flash flooding.
Flash Flood — Apr 12, 2024
A cold front brought widespread soaking rainfall to the area. This rainfall combined with significant snowpack loss and saturated grounds to produce minor to moderate river flooding, with isolated flash flooding across the mountains. Repeated rounds of rain compressed, warmed, and ripened the area snowpack in advance of the heavier rain on Friday the 12th. The combination of rain, strong winds,...
Flash Flood — Jun 28, 2023
Two rounds of rain moved across the state on June 28th with a weak frontal boundary. Light rain showers pushed through the state during the morning, with the first line of showers and thunderstorms moving into western New Hampshire by midday. This line slowly moved eastward through the early afternoon hours bringing a widespread band of heavy rain of 1 to 2���. As the axis of heavy rain ...
Flash Flood — Dec 18, 2023
Low pressure began organizing in the Gulf of Mexico on the 16th, setting record low sea level pressures as it traversed the Southeast through the 17th. Strong high pressure over the North Atlantic created a deep southeasterly flow that drew warm air into New England ahead of the approaching storm. By the time precipitation arrived on the evening of the 17th, temperatures were warm enough for ra...
Flood — Dec 18, 2023
Low pressure began organizing in the Gulf of Mexico on the 16th, setting record low sea level pressures as it traversed the Southeast through the 17th. Strong high pressure over the North Atlantic created a deep southeasterly flow that drew warm air into New England ahead of the approaching storm. By the time precipitation arrived on the evening of the 17th, temperatures were warm enough for ra...
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 Carroll County, New Hampshire:
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 Carroll County, New Hampshire 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.