FloodZoneMap.org

Thurston County, Washington Flood Zones

Check an Address in Thurston County

Enter any address in Thurston County, Washington to see its FEMA flood zone

Read First-Hand Flood Stories from Thurston County

4 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 Thurston County

Thurston County, Washington has recorded 5 flood-related events since 1996 according to NOAA's Storm Events Database. The county has received 29 federal disaster declarations, 14 of which involved flooding or coastal storms. Enter any address above to check its FEMA flood zone designation.

Thurston County Disaster History

FEMA Disaster Declarations (1965–2025)

Disaster Declarations
29
Flood/Coastal Disasters
14
Latest Disaster
Severe Storms, Straight-line Winds, Flooding, Landslides, And Mudslides (2025-12-09)

Source: OpenFEMA Disaster Declarations Summaries.

Recent Disaster Declarations in Thurston County

DeclarationTypeDate
Severe Storms, Straight-line Winds, Flooding, Landslides, And MudslidesFloodDec 9, 2025
Severe Winter Storms, Snowstorms, Straight-line Winds, FloodinFloodDec 26, 2021
Bordeaux Road FireFireSep 8, 2020
Covid-19BiologicalJan 20, 2020
Covid-19 PandemicBiologicalJan 20, 2020
Severe Storms, Flooding, Landslides, And MudslidesFloodJan 20, 2020
Severe Winter Storm, Flooding, Landslides, And MudslidesSevere StormJan 14, 2012
Severe Winter Storm, Landslides, Mudslides, And FloodingFloodJan 6, 2009
Severe Winter Storm And Record And Near Record SnowSevere StormDec 12, 2008
Severe Storms, Flooding, Landslides, And MudslidesSevere StormDec 1, 2007

Recorded Flood Events in Thurston County

NOAA Storm Events Database (1996–2025)

Total Flood Events
5
River/Area Floods
4
Coastal/Storm Surge
1
Total Property Damage
$3.4M

Source: NOAA National Weather Service Storm Events Database.

Recent Flood Events in Thurston County

TypeDateDamage
Coastal FloodDec 27, 2022
FloodJan 13, 202163.00K
FloodJan 3, 202163.00K
FloodJan 7, 20093.20M
FloodNov 4, 2006100.00K

Thurston County Flood History

Coastal Flood — Dec 27, 2022

Coastal flooding between 8 AM - 11 AM high tide cycle on 12/27. The event was a result of King Tides, coinciding with significantly strong low pressure in the area and strong winds. Wind gusts of up to 64 MPH occurred in the event as well as observed tidal conditions 1-2 feet above the HAT.

Flood — Jan 13, 2021

The period from January 10 to 16 continued a pattern of a strong and persistent Aleutian Low pressure system in the eastern Pacific that began December 29, 2020 and which directed the jet stream and primary storm track at Washington State. This resulted in a series of atmospheric rivers and wind storms that battered Washington State. Water vapor transport into Washington State averaged 160-200...

Flood — Jan 3, 2021

From December 29 - January 16, a strong and persistent Aleutian Low pressure system developed in the eastern Pacific which directed the jet stream and primary storm track at Washington State that resulted in a rapid series of atmospheric rivers and wind storms that battered Washington State. Water vapor transport into Washington State averaged 160-200% of normal during the period from December ...

Flood — Jan 7, 2009

Rainfall of 8-20 inches in the mountains and 1 to 9 inches in the lowlands occurred from Jan 6th through 8th. Flooding was widespread over much of Western Washington. Record flooding occurred on the Snoqualmie, Tolt, and North Fork Stillaguamish Rivers. Near record flooding occurred on the Snohomish, Newaukum, and Skookumchuck Rivers. Major flooding occurred on 18 rivers and 21 forecast po...

Flood — Nov 4, 2006

A strong, warm and very wet Pacific weather system brought copious amounts of rainfall to Washington from November 2 through 7, with subsequent major flooding that extended through November 11. This storm fueled in part from sub-tropical moisture associated with former western Pacific typhoon Cimaron, produced rain amounts of between 10 to 38 inches in the Cascades and Olympics and 4 to 10 inc...

Source: NOAA National Weather Service Storm Events Database.

Thurston County NFIP Flood Insurance Claims

Total Claims Filed
316
Total Paid Out
$5.3M
Avg Claim
$21,234
Avg Water Depth
9.2 ft

Claims by Flood Zone

A Zones (High Risk)
198
V Zones (Coastal)
4
X Shaded (500-yr)
15
X Unshaded (Low)
42

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

Flood Zone Types in Thurston County

FEMA assigns flood zone designations to areas in Thurston County, Washington:

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 Thurston County

Properties in Thurston County, Washington 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.