Why Portland Is Sinking (And Why That’s Not So Scary)

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July 8, 2025 • 24 mins

Everyone knows about the looming threats of “The Big One” and the ongoing danger of wildfires across our state. But recently, another potential local natural disaster has emerged in the headlines: Portland is sinking. But should we be worried? Today, science journalist Erin Ross is joining us to discuss why our city is sinking and how concerned we should be. Mentioned in today's episode: Land Subsidence Risk to Infrastructure in US Metropolises (Nature Cities) Spatial Vertical Land Motion Maps (Nature Cities) Become a member of City Cast Portland today! Get all the details and sign up here. Who would you like to hear on City Cast Portland? Shoot us an email at portland@citycast.fm, or leave us a voicemail at 503-208-5448. Want more Portland news? Then make sure to sign up for our morning newsletter, Hey Portland, and be sure to follow us on Instagram. Looking to advertise on City Cast Portland? Check out our options for podcast and newsletter ads at citycast.fm/advertise. Learn more about the sponsors of this July 8th episode: D'Amore Law Biketown PDX - Use code CITYCAST25 for a free unlock Kenai-Red Fresh Company Guilds with Benefits Learn more about your ad choices. Visit megaphone.fm/adchoices

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.css-14f5ked{margin:0;word-break:break-word;display:-webkit-box;-webkit-box-orient:vertical;box-orient:vertical;-webkit-line-clamp:2;overflow:hidden;}Why Portland Is Sinking (And Why That’s Not So Scary)