KQED's Forum As Sea Levels Rise, What Will It Take to Protect the Bay Area From Flooding?
Jan 13, 2026
In this engaging discussion, climate reporter Ezra David Romero highlights the recent severe flooding in Marin County, triggered by a mix of king tides and saturated ground. Urban resilience expert Kristina Hill explains the complexities of groundwater dynamics and the challenge of current infrastructure. Bart Ney discusses Caltrans' emergency responses and immediate solutions, while Michael Germeraad delves into the costly regional adaptations needed for sea-level rise. Together, they explore long-term strategies and innovative ideas for a resilient Bay Area.
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Compound Flooding Is The Real Threat
- King tides combined with saturated soils and storm surge create compound flooding that pushes water further inland than simple tidal maps show.
- Kristina Hill and Ezra David Romero emphasize that groundwater and runoff turn low-lying filled wetlands into vulnerable "bowls."
Studio Flooded From Groundwater Rising Up
- A San Rafael karate studio flooded from groundwater pushing up through seams while matting floated in the front, trapping the owner.
- Ezra David Romero used this on-the-ground example to show how saturated soils and tides cause inside-out flooding.
Rising Seas Raise Groundwater Too
- Sea level rise drives groundwater up under nearby land, often one-to-one within a quarter mile of the shore.
- Kristina Hill warns that focusing only on tidal defenses misses the groundwater and rain components of future flooding.
