> ## Content Index
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# The Next Big Earthquake Could Sink Parts of the Pacific Northwest
- URL: https://www.cascadepbs.org/show/nova/extras/the-next-big-earthquake-could-sink-parts-of-the-pacific-northwest-kciqof/
- Published: 2025-08-04T15:00:54.000Z
- Updated: 2025-08-04T18:30:48.000Z
- Description: A massive earthquake along the Cascadia Subduction Zone could sink parts of the Pacific Northwest.
- Author: Cascade PBS Staff
- Tags: NOVA, #ZZZ_Show_8f1ff589-6222-4260-acbf-0523a6424abf, #v1.7, #ZZZ_Extra_0c0fd278-9b69-4ef1-8711-83390ab9f365, #extra

A 2025 study suggests that when the next "Big One" hits, coastal land could sink by up to 6 feet. That sudden drop could instantly double the number of people, homes, and roads exposed to flooding.