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Mason County, Michigan Flood Zones

Check an Address in Mason County

Enter any address in Mason County, Michigan to see its FEMA flood zone

Read First-Hand Flood Stories from Mason County

10 NOAA storm reports from this county describe what happened, in the words of the meteorologists who were there.

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Flood Risk Data for Mason County

Mason County, Michigan has recorded 14 flood-related events since 1996 according to NOAA's Storm Events Database, including 9 flash floods and 5 river or area floods. The county has received 9 federal disaster declarations, 2 of which involved flooding or coastal storms. Enter any address above to check its FEMA flood zone designation.

Mason County Disaster History

FEMA Disaster Declarations (1977–2020)

Disaster Declarations
9
Flood/Coastal Disasters
2
Latest Disaster
Covid-19 Pandemic (2020-01-20)

Source: OpenFEMA Disaster Declarations Summaries.

Recent Disaster Declarations in Mason County

DeclarationTypeDate
Covid-19BiologicalJan 20, 2020
Covid-19 PandemicBiologicalJan 20, 2020
Severe Storms, Tornadoes, And FloodingSevere StormJun 6, 2008
Hurricane Katrina EvacuationHurricaneAug 29, 2005
Severe StormsSevere StormMay 29, 1998
Severe Storms & FloodingFloodSep 10, 1986
Severe Storms And FloodingFloodSep 5, 1985
Blizzards & SnowstormsSnowstormJan 27, 1978
DroughtDroughtMar 2, 1977

Recorded Flood Events in Mason County

NOAA Storm Events Database (1996–2025)

Total Flood Events
14
River/Area Floods
5
Flash Floods
9
Total Property Damage
$8.7M

Source: NOAA National Weather Service Storm Events Database.

Recent Flood Events in Mason County

TypeDateDamage
FloodJul 20, 2019500.00K
FloodApr 17, 20133.00M
Flash FloodMay 3, 201275.00K
Flash FloodJun 13, 20083.00M
FloodMay 23, 20041M
FloodJun 9, 200420K
Flash FloodMay 16, 200125K
Flash FloodMay 16, 200150K
Flash FloodMay 15, 200125K
Flash FloodMay 15, 200150K

Mason County Flood History

Flood — Jul 20, 2019

A round of severe storms resulted in numerous reports of downed trees and power lines. Peak wind gusts were estimated at up to around 70 to 80 mph. In addition 6 to 10 inches of rain fell across much of Mason and Lake counties. There were several road washouts, a few culvert failures, and a couple of bridge washouts. At least 48 homes were damaged by water in Lake county.

Flood — Apr 17, 2013

Record flooding occurred during the month of April and record crests occurred on the lower portions of the Grand River at Ionia, Lowell, Ada, Comstock Park, and Grand Rapids, Michigan. Due to the severity of the flooding, Michigan���s Governor Rick Snyder declared a state of disaster for 19 counties and two cities. ||The two cities declared in the disaster were Grand Rapids and Ionia. T...

Flash Flood — May 3, 2012

An upper low moving over a warm front that stretched across northern Lower Michigan set the stage for heavy rainfall on May 3rd. Training thunderstorms (storms that move over the same location) produced 5 to 7 inches of rainfall across portions of Mason and Lake counties. The heavy rainfall resulted in roads that were either flooded or washed out. As the day progressed, strong to severe storms...

Flash Flood — Jun 13, 2008

A round of strong to severe thunderstorms accompanied by very heavy rainfall resulted in significant flash flooding across Mason and Lake counties.

Flood — May 23, 2004

The biggest and longest duration flooding event in the past ten to twenty years occurred across southwestern and south central lower Michigan from May 20th through the third of June. Flooding in mid May resulted in very high river levels and the ground was saturated on the 20th. Numerous thunderstorm complexes and areas of heavy rainfall developed repeatedly in the vicinity of a quasi station...

Source: NOAA National Weather Service Storm Events Database.

Mason County NFIP Flood Insurance Claims

Total Claims Filed
8
Total Paid Out
$175,414
Avg Claim
$25,059
Avg Water Depth
18.5 ft

Claims by Flood Zone

A Zones (High Risk)
4
V Zones (Coastal)
1

Source: OpenFEMA NFIP Individual Claims (2.25M records analyzed).

Flood Zone Types in Mason County

FEMA assigns flood zone designations to areas in Mason 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.

View all flood zone types →

Flood Insurance in Mason County

Properties in Mason 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.