🌊 Cascadia Subduction Zone Margin

You are on the Cascadia margin.

The Oregon Coast is home to towering Sitka spruce, ancient dunes, and the lower Umpqua estuary. It is also the surface of North America’s most powerful megathrust fault.

Preparing for the Cascadia Subduction Zone is straightforward once you know the ground truth: what makes our coastal basin unique, which direction to walk when the ground shakes, and how to keep your household self-reliant during highway isolation.

Learn the Coastal Reality → Interactive Walking Map
⏱️ 15 to 25 Minutes

Time between the end of shaking and the arrival of the first tsunami surge on outer beaches like Winchester Bay 3rd Beach.

⛔ The Island Effect

Scholfield Creek bridge to the south, Umpqua River bridge to the north, and Hwy 38 rockfall corridors will isolate Reedsport for 14–21 days.

⛰️ High Ground is Nearby

Unlike barrier islands, the Oregon Coast rises steeply into dune ridges and foothills. Safety is typically a 6 to 12 minute brisk walk uphill.