Alison Hillm…, Other/Just Looking in San Francisco, CA

Which neighborhoods in San Francisco are built on bedrock?

Asked by Alison Hillman, San Francisco, CA Thu Jan 17, 2013

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Jed Lane; Fog City Guide’s answer
BEST ANSWER
The USGS in Palo Alto has maps online that show soil types relating to earthquake reaction. As a native I've listened to stories all my life about the damage here and there.
Assuming this is an earthquake survival question you should be aware of all the research that has been done by the City into construction types and movement in the CAPPS program. Also look into NERT training for further knowledge on how to keep yourself and family safe.
One of the City’s experts, Daniel Homsey, went to Christchurch last year and saw the damage done and looked at the recovery underway. One of the stories he told me pertains to your bedrock question. He and I live on Mt. Davidson which is bedrock and we assumed our homes were safe. In Christchurch homes on bedrock were lifted three and four feet straight up and then settled right back down. There are very few structures built that can take that kind of movement.
Still I’d rather live here than most other places! Even though I work to build earthquake preparation and community resilience – in my free time – I think most San Franciscan’s get up every day saying “the sun is going to shine and there will be no earthquake today”. Is that burying your head in the sand or is just the way it has to be to live in restless terrain?
1 vote Thank Flag Link Fri Jan 18, 2013
Jed Lane; Fog…, Real Estate Pro in San Francisco, CA
MVP'08
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Allison,

Here are two sites that are very useful. This one allows you to input an address, zip code etc. http://gis3.abag.ca.gov/Website/Shaking-Maps/viewer.htm
http://geomaps.wr.usgs.gov/sfgeo/liquefaction/susceptibility.html

Regards.
Lizete
Web Reference: http://www.LizeteSantos.com
2 votes Thank Flag Link Thu Jan 17, 2013
There is no solid answer for this question. You are usually better off if the house is not built on the low-lying flat areas across the city.
0 votes Thank Flag Link Thu Jan 17, 2013
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