Landmark· Prince William Sound· Alaska Southcentral — Kenai Fjords & Prince William Sound
Barry Arm Landslide Hazard Zone (Port Wells)
61° 5.2′ N · 148° 9.8′ W
Barry Arm, the western arm of Port Wells that leads to Harriman Fjord, sits below a slow-moving landslide that could drop into the water and trigger a local tsunami. The state geologists track it and publish a status page.
Practical
Coordinate is the OSM bay point (a USGS name position). The Alaska Division of Geological and Geophysical Surveys page, updated October 2, 2026, rates the threat at Level 1, says the slide is stable or moving slowly, says a local tsunami could follow a failure but a region-wide threat is unlikely, and gives no travel limits; it tells mariners to stay vigilant and be ready to leave if they notice unusual rockfall, waves, currents or tides. Earlier advisories (2020 and 2022) urged boaters to limit time here, and in 2022 there was no operating real-time warning. The next scheduled update was November 6, 2026. Check the DGGS page before each trip.
Best for
Checking current hazard status before entering Harriman Fjord
Season
Check status each time; updated roughly every month in 2026
Nearby
- Harriman Fjord Glaciers (Harriman Fiord)7.2 NM away
- Bettles Bay (Port Wells)9.5 NM away
- Granite Bay (Esther Island, Prince William Sound)12.9 NM away
- College Fjord and Harvard Glacier (Prince William Sound)15.4 NM away
- Ziegler Cove and Pigot Bay (Prince William Sound)15.8 NM away
- Quillian Bay (South Esther Island)17.4 NM away
- Entry Cove (Prince William Sound)17.9 NM away
- Decision Point (Prince William Sound)18.8 NM away
Place data includes © OpenStreetMap contributors (ODbL).