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Ask Us: A map of bedrock vs. landfill

Where readers ask and we try to answer:

Can you tell me how I can get a map of all the SF neighborhoods that would show me what areas are bedrock vs. landfill.

Thanks,
C

First, you’ll want to know your Seismic Hazard Zones.

Then, you’ll want to get in there a bit further and really have a look. You can find this map at http://geomaps.wr.usgs.gov/sfgeo/liquefaction/susceptibility.html.

Here is another liquefaction map that you can also peruse. This one you can zoom in to street level. Remember, red=bad.

Hope this helps. I’m sure there are some readers that might even know of better maps, so let’s hope they chime in.

Thanks for reading and thanks for asking.

[Update: this high resolution photo taken after the 1906 Quake is amazing.]

Liquefaction Zones of San Francisco’s Marina District [theFrontSteps]
Bay Area Liquefaction, Landslide, and Seismic Zones – Mapped [theFrontSteps 8/1/2016]

 

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