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Landslide risk in the San Francisco Bay region

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Abstract

We have used historical records of damaging landslides triggered by rainstorms, and a newly developed Probabilistic Landslide Assessment Cost Estimation System (PLACES), to estimate the numbers and direct costs of future landslides in the San Francisco Bay region. The estimated annual cost of future landslides in the entire region is about US $15 million (year 2000 $). The estimated annual cost is highest for San Mateo County ($3.32 million) and lowest for Solano County ($0.18 million). Normalizing costs by dividing by the percentage of land area with slopes equal or greater than about 10° indicates that San Francisco County will have the highest cost per square km ($7,400), whereas Santa Clara County will have the lowest cost per square km ($230). These results indicate that the San Francisco Bay region has one of the highest levels of landslide risk in the United States. Compared to landslide cost estimates from the rest of the world, the risk level in the Bay region seems high, but not exceptionally high.

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Additional Publication Details

Publication type:
Conference Paper
Publication Subtype:
Conference Paper
Title:
Landslide risk in the San Francisco Bay region
Volume
2
Year Published:
2008
Language:
English
Publisher:
Taylor & Francis
Publisher location:
London, UK
Contributing office(s):
Geologic Hazards Science Center
Description:
6 p.
Larger Work Type:
Book
Larger Work Subtype:
Conference publication
Larger Work Title:
Landslides an d Engineered Slopes, From the Past to the Future, Proceedings of the 10th International Symposium on Landslides, June 30-July 4, 2008, Xi'an, China
First page:
1899
Last page:
1904
Country:
United States
State:
California
Other Geospatial:
San Francisco Bay