|Few Landslides||contains few, if any, large mapped landslides, but locally contains scattered small landslides and questionably identified larger landslides|
|Many Landslides||consists of mapped landslides and more extensive intervening areas than in 'Mostly Landslide'; defined by excluding areas free of mapped landslides|
|Mostly Landslide||consists of mapped landslides, intervening areas typically narrower than 1500 feet, and narrow borders around landslides|
|Surficial deposits||Area of suficial deposits|
|very few landslides||Less landslide deposits than 'few landslide'|
|water||areas of water|
|Range of values|
These maps and databases provide a summary of the distribution of landslides evident in the landscape of the San Francisco Bay region. Original identification and map delineation of these landslides required detailed analysis of the topography by skilled geologists, a task generally accomplished through the study of aerial photographs. Such original landslide maps are now available for most of the region at scales of 1:24,000 - 1:62,500 (Pike, 1997).
Are there legal restrictions on access or use of the data?
This report is preliminary and has not been reviewed for conformity with U.S. Geological Survey editorial standards or with the North American Stratigraphic Code. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
This database, identified as 'Summary Distribution of Slides and Earth Flows in the San Francisco Bay Region, California', has been approved for release and publication by the Director of the USGS. Although this database has been reviewed and is substantially complete, the USGS reserves the right to revise the data pursuant to further analysis and review. This database is released on condition that neither the USGS nor the U.S. Government may be held liable for any damages resulting from it use.