Is Your Home In A Liquefaction Zone


The California state government has created a website which will give you a simple description of the liquefaction hazard and other natural hazards for any property. Check out at the MyHazards website and select the “Earthquake Risk” tab to find out if your home is in a Liquefaction Zone Area


Understanding Liquefaction Zones


The ABAG report "The REAL dirt on Liquefaction" and web site provides the following quote:

"The 1989 Loma Prieta earthquake caused a total of $5.9 billion in property damage. Most of the damage was due to ground shaking. However, approximately $100 million of that (1.6%) was due to liquefaction."


The Loma Prieta earthquake occurred at the end of the dry season in October of a relatively dry year.



Three factors are required for liquefaction to occur


  1. loose, granular sediment - typically beach and stream deposits or land fill.

  2. saturation of the sediment by ground water - water fills the spaces between sand and silt grains

  3. strong shaking - all portions of the San Francisco Bay Area have the potential for susceptible areas to be shaken hard enough for liquefaction to occur.



Susceptible Areas


The San Francisco Bay Area has 77 square miles of land made through fill being poured into the bay and wetlands since 1845. This along with much of the natural land at low elevations are susceptible to liquefaction. Loose sediment along existing and filled streams may also be susceptible. The pressing question is how large an area will be impacted? In San Jose the area extends from the San Francisco Bay to approximately Stevens Creek Blvd. In Palo Alto most of the area between the bay and Alma Street is impacted.

The Santa Clara County Government Geologic Hazard Maps provide excellent detail. A screen shot of one for Palo Alto is shown below.


Coming Soon
1675 Tupolo Dr, San Jose, CA 95124
3652 Sorci Dr, San Jose, CA 95124
505 Minton Ln, Mountain View, CA 94041
41415 Millenium Ter, Fremont, CA 94538

1535 Treviso Ave, San Jose, CA 95118
20288 Pinntage Pkwy, Cupertino, CA 95014

5387 Quebec Cmn, Fremont, CA 94555

1821 Mandel Ct, San Jose, CA 95131

Currently Pending

1514 Redmond Ave, San Jose, CA 95120

22943 Longdown Rd, Cupertino, CA 95014

600 S Abel St #525, Milpitas, CA 95035

5992 Treviso Ter, Fremont, CA 94555

1427 Kinsport Lane, San Jose, CA 95120

3812 Fiano Cmn, Fremont, CA 94555

694 Valley Way, Santa Clara, CA 95051

22551 Alcalde Rd, Cupertino, CA 95014
4735 McHenry Gate Way, Pleasanton, CA 94566

6318 Jarvis Ave, Newark, CA 94560
943 Baines St, East Palo Alto, CA 94303

6129 Genoa Ter, Fremont, CA 94555

Currently Sold

600 S. Abel St, #525

Milpitas,CA 95035

167 S San Antonio Rd, Los Altos, CA 94022

Tel: (408) 674-4418
Calbre: 01371905


Currently Sold

22943 Longdown Rd

Cupertino, CA 95014

  • contact-me-icon-63
  • img_179745
  • w-facebook
  • White Instagram Icon
  • White LinkedIn Icon
  • White YouTube Icon

© Copyright 2021 Yvonne Yang, All Rights Reserved