FloodZoneMap.org

Northwest Arctic Borough, Alaska Flood Zones

Check an Address in Northwest Arctic Borough

Enter any address in Northwest Arctic Borough, Alaska to see its FEMA flood zone

Read First-Hand Flood Stories from Northwest Arctic Borough

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

Read Alaska flood stories →

Flood Risk Data for Northwest Arctic Borough

Northwest Arctic Borough, Alaska has recorded 4 flood-related events since 1996 according to NOAA's Storm Events Database. The county has received 7 federal disaster declarations, 1 of which involved flooding or coastal storms. Enter any address above to check its FEMA flood zone designation.

Northwest Arctic Borough Disaster History

FEMA Disaster Declarations (1994–2025)

Disaster Declarations
7
Flood/Coastal Disasters
1
Latest Disaster
Severe Storms, Flooding, And Remnants Of Typhoon Halong (2025-10-08)

Source: OpenFEMA Disaster Declarations Summaries.

Recent Disaster Declarations in Northwest Arctic Borough

DeclarationTypeDate
Severe Storms, Flooding, And Remnants Of Typhoon HalongFloodOct 8, 2025
Severe Storm And FloodingSevere StormOct 20, 2024
Covid-19BiologicalJan 20, 2020
Covid-19 PandemicBiologicalJan 20, 2020
Severe Fall Storm, Tidal Surges, And FloodingSevere StormSep 22, 2005
Severe Winter Storm, Tidal Surges And FloodingSevere StormOct 18, 2004
Severe Storms And FloodingSevere StormAug 8, 1994

Recorded Flood Events in Northwest Arctic Borough

NOAA Storm Events Database (1996–2025)

Total Flood Events
4
Coastal/Storm Surge
4
Total Property Damage
$2.0M

Source: NOAA National Weather Service Storm Events Database.

Recent Flood Events in Northwest Arctic Borough

TypeDateDamage
Coastal FloodOct 8, 2025800.00K
Coastal FloodOct 8, 20251.20M
Coastal FloodOct 21, 2024

Northwest Arctic Borough Flood History

Coastal Flood — Oct 8, 2025

A low pressure system over the Western Aleutian Islands moved into the central Bering Sea the night of Sunday, October 6th, rapidly intensifying into a strong coastal storm. This system caused widespread significant flooding and coastal erosion across the Yukon Delta, Seward Peninsula, and Kotzebue Sound coastlines. Additionally, widespread gusty winds were felt across the Yukon Delta, St. Lawr...

Coastal Flood — Oct 21, 2024

A major fall storm quickly pushed across northern Alaska between October 20th and 23rd, with the low itself moving all the way inland. The storm brought coastal flooding, high winds, heavy precipitation, and a mix of precipitation, including a rain-snow mix and freezing rain. Over higher elevations in the Brooks Range, snow amounts approached 2 feet, with 12 to 15 inches across the higher ele...

Source: NOAA National Weather Service Storm Events Database.

Northwest Arctic Borough NFIP Flood Insurance Claims

Total Claims Filed
10
Total Paid Out
$84,427
Avg Claim
$14,071
Avg Water Depth
12.5 ft

Claims by Flood Zone

A Zones (High Risk)
7
X Unshaded (Low)
3

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

Flood Zone Types in Northwest Arctic Borough

FEMA assigns flood zone designations to areas in Northwest Arctic Borough, Alaska:

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 Northwest Arctic Borough

Properties in Northwest Arctic Borough, Alaska 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.