Enter any address in Glenn County, California to see its FEMA flood zone
River overflow along waterways is the dominant flood character in Glenn County. Between 1993 and 2023, NOAA Storm Events data recorded 30 flood events in the county, resulting in one fatality. Recent events include flooding in December 2024, associated with heavy mountain snow and rain, and a major winter storm in February 2024 that brought heavy rain and river rises.
National Flood Insurance Program data shows that properties in Zone A have experienced the most claims, with an average payout of $8,233 and an average water depth of 3.6 feet. However, properties in Zone X, which includes both shaded and unshaded areas, have seen higher average payouts, with Zone X claims averaging $33,971 and reaching an average depth of 6.8 feet. Homeowners in Zone A, as well as those in Zone X areas, should pay close attention to flood risk.
Summary generated from NOAA storm narratives and NFIP claim data for this county. Not predictive.
12 NOAA storm reports from this county describe what happened, in the words of the meteorologists who were there.
Glenn County, California has recorded 30 flood-related events since 1996 according to NOAA's Storm Events Database. The county has received 21 federal disaster declarations, 9 of which involved flooding or coastal storms. Enter any address above to check its FEMA flood zone designation.
FEMA Disaster Declarations (1964–2024)
Source: OpenFEMA Disaster Declarations Summaries.
| Declaration | Type | Date |
|---|---|---|
| Severe Winter Storms, Tornadoes, Flooding, Landslides, And Mudslides | Severe Storm | Jan 31, 2024 |
| Severe Winter Storms, Flooding, Landslides, And Mudslides | Flood | Mar 9, 2023 |
| Severe Winter Storms, Straight-line Winds, Flooding, Landslides, And Mudslides | Severe Storm | Feb 21, 2023 |
| Severe Winter Storms, Flooding, And Mudslides | Flood | Jan 8, 2023 |
| Severe Winter Storms, Flooding, Landslides, And Mudslides | Flood | Dec 27, 2022 |
| Covid-19 | Biological | Jan 20, 2020 |
| Covid-19 Pandemic | Biological | Jan 20, 2020 |
| Severe Winter Storms, Flooding, Landslides, And Mudslides | Severe Storm | Feb 24, 2019 |
| Severe Winter Storms, Flooding, And Mudslides | Flood | Feb 1, 2017 |
| Hurricane Katrina Evacuation | Hurricane | Aug 29, 2005 |
NOAA Storm Events Database (1996–2025)
Source: NOAA National Weather Service Storm Events Database.
| Type | Date | Damage |
|---|---|---|
| Flood | Dec 24, 2025 | 0.00K |
| Flood | Nov 23, 2024 | 0.00K |
| Flood | Dec 14, 2024 | 0.00K |
| Flood | Feb 4, 2024 | 395.00K |
| Flood | Mar 14, 2023 | 0.00K |
| Flood | Jan 14, 2023 | 0.00K |
| Flood | Jan 12, 2023 | 0.00K |
| Flood | Jan 9, 2023 | 0.00K |
| Flood | Mar 4, 2023 | 600.00K |
| Flood | Jan 4, 2023 | 0.00K |
Flood — Dec 24, 2025
A prolonged period of wet weather brought heavy snowfall and strong winds to the Sierra Nevada. Heaviest snowfall was observed from 12/24-12/26 when snow levels came down below the mountain passes. Snowfall measurements over the 12/24-12/26 timeframe were around 2-5 ft per Caltrans, Ski resorts, and UC Berkeley Central Sierra Snow Lab. Southerly wind gusts of 50-80 mph were observed as well acr...
Flood — Nov 23, 2024
Another weather system brought continued periods of heavy mountain snow with mountain travel delays and chain restrictions, widespread rain with flooding impacts, and gusty winds in the from November 22nd through November 26th.
Flood — Dec 14, 2024
Active weather brought periods of heavy mountain snow, rain and gusty winds from December 12th through December 17th as multiple storms moved through the area. The strongest storm moved through over the December 13th through 14th timeframe and brought over 2 to 3 inches of rain, over 2 feet of heavy snow above 5000 feet, and gusty southerly wind gusts of 35 to 65 mph. Numerous downed trees and ...
Flood — Feb 4, 2024
A major winter storm moved in from the south on February 4th, bringing heavy rain, strong winds, thunderstorms and heavy mountain snow through February 7th. Damaging winds brought down trees and caused widespread power outages. Flooding and strong winds resulted in multiple fatalities. Chain controls were observed in the mountains. Heavy rain brought nuisance flooding on roads and urban areas a...
Flood — Mar 14, 2023
A wet system brought periods of heavy rain with flooding. There was 1 to 2 feet of snow accumulated above 6,500 feet, locally higher on some peaks. Heavy rain fell bringing widespread roadway flooding, as well as local mudslides, flash flooding, with evacuations ordered in some areas. Thunderstorms with large hail, strong damaging winds and tornadoes were reported. Strong winds gusting to 55 to...
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 Glenn County, California:
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 Glenn County, California 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.