Inundation Mapping Project

In partnership with the Alaska Division of Geological and Geophysical Surveys and the Alaska Division of Homeland Security and Emergency Management, we evaluate and map potential inundation using numerical modeling of tsunami wave dynamics.

Communities are selected with consideration to their tsunami hazard exposure, location, infrastructure, availability of data, and willingness to incorporate the results into a hazard mitigation plan. The maps incorporate the best tsunami science available at the time of publication.

Visit our mobile-friendly Tsunami Hazard Map Tool to learn more about each community. Zoom to your area of interest by selecting a community and map type. You can also toggle between map and satellite views at the top right. At present, the interactive map includes flow depths and inundation boundaries for 27 at-risk communities, and hazard extent for an additional 27 communities.
Instructional video on using the Tsunami Hazard Map Tool
Frequently Asked Questions about the Tsunami Hazard Map Tool

Published Reports


Aleutians and Alaska Peninsula

Adak and Atka
Dutch Harbor and Akutan
False Pass and Perryville
King Cove and Cold Bay
Sand Point

Bering Sea

Dillingham, Nelson Lagoon, Platinum, St. George, and St. Paul

Kodiak Island

Akhiok, Chiniak, Karluk, Larsen Bay, Old Harbor, Ouzinkie, and Port Lions
Kodiak City, USCG Base, and Womens Bay

Karluk and Larsen Bay (updated)

Southcentral Alaska

Anchor Point, Nanwalek, and Port Graham
Chenega Bay and Northern Sawmill Bay
Cordova and Tatitlek


Port Valdez

Seward and Northern Resurrection Bay
Whittier and Western Passage Canal

Southeast Alaska 

Elfin Cove, Gustavus, and Hoonah
Kasaan, Klawock, Metlakatla, Pelican, Point Baker, and Port Protection
Port Alexander, Craig, and Ketchikan
Skagway and Haines