FloodZoneMap.org

Wasco County, Oregon Flood Zones

Check an Address in Wasco County

Enter any address in Wasco County, Oregon to see its FEMA flood zone

Read First-Hand Flood Stories from Wasco County

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

Read Oregon flood stories →

Flood Risk Data for Wasco County

Wasco County, Oregon has recorded 3 flood-related events since 1996 according to NOAA's Storm Events Database, including 1 flash floods and 2 river or area floods. The county has received 24 federal disaster declarations, 5 of which involved flooding or coastal storms. Enter any address above to check its FEMA flood zone designation.

Wasco County Disaster History

FEMA Disaster Declarations (1964–2025)

Disaster Declarations
24
Flood/Coastal Disasters
5
Latest Disaster
Rowena Fire (2025-06-11)

Source: OpenFEMA Disaster Declarations Summaries.

Recent Disaster Declarations in Wasco County

DeclarationTypeDate
Rowena FireFireJun 11, 2025
Larch Creek FireFireJul 10, 2024
WildfiresFireJul 10, 2024
Severe Winter Storms, Straight-line Winds, Landslides, And MudslidesSevere StormJan 10, 2024
Miller Road FireFireAug 2, 2022
Wildfires And Straight-line WindsFireSep 7, 2020
White River FireFireAug 17, 2020
Mosier Creek FireFireAug 12, 2020
Covid-19BiologicalJan 20, 2020
Covid-19 PandemicBiologicalJan 20, 2020

Recorded Flood Events in Wasco County

NOAA Storm Events Database (1996–2025)

Total Flood Events
3
River/Area Floods
2
Flash Floods
1

Source: NOAA National Weather Service Storm Events Database.

Recent Flood Events in Wasco County

TypeDateDamage
Flash FloodMay 30, 20200.00K
FloodAug 9, 20190.00K
FloodJan 1, 2006

Wasco County Flood History

Flash Flood — May 30, 2020

A major severe weather event by Pacific Northwest standards occurred over central and northeast Oregon and southeast Washington on May 30th. A powerful upper level storm system moved across the area during the afternoon and evening helping to trigger severe thunderstorms. The airmass was unusually unstable for this area of the country with surface dewpoints well into the 60s. With strong upper ...

Flood — Aug 9, 2019

A powerful upper storm system combined with modest low and mid level moisture to yield scattered strong to severe storms and flash flooding. Storms developed first across the higher terrain of central Oregon nearer the Cascades and adjacent Ochoco mountains. Storms then built northward with hail and damaging winds along the way.

Source: NOAA National Weather Service Storm Events Database.

Wasco County NFIP Flood Insurance Claims

Total Claims Filed
9
Total Paid Out
$80,459
Avg Claim
$11,494
Avg Water Depth
1.0 ft

Claims by Flood Zone

A Zones (High Risk)
3
X Unshaded (Low)
6

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

Flood Zone Types in Wasco County

FEMA assigns flood zone designations to areas in Wasco County, Oregon:

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 Wasco County

Properties in Wasco County, Oregon 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.