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San Francisco Bay Region landslide folio part E - Map of debris-flow source areas in the San Francisco Bay region, California


Publication Date
Time Period
File Modification Date
2013-05-16 14:07:55


This map identifies the principal areas in the San Francisco Bayregion that are likely to produce debris flows, which are alsocalled "mudslides." Debris flows that occur in the bay region arefast-moving downslope flows of mud that may include rocks,vegetation, and other debris. These flows begin during intenserainfall as shallow landslides on steep slopes. The rapid movementand sudden arrival of debris flows pose a hazard to life andproperty during and immediately following the triggering rainfall.Debris flows in a given storm originate from a number of sourcesscattered throughout steep parts of the landscape, as shown infigure 1 (on map sheet; files sfbr-,, etc.). Duringsubsequent storms, new debris flows originate [...]


Point of Contact :
Graymer, Russell W
Process Contact :
Jennifer Lenz
Distributor :
USGS Information Services
Metadata Contact :
Peter N Schweitzer
Originator :
S.D. Ellen, R.K. Mark, G.F. Wieczorek, C.M. Wentworth, D.W. Ramsey, T.E. May

Attached Files

Click on title to download individual files attached to this item.

Potential Metadata Source

13.15 KB


These topographic characteristics are used to predict the likelyfuture source areas shown on this map.
PDF representation of debris-flow map sorted by county
PDF representation of debris-flow map sorted by county



Data source
Link Processing
Added to Sciencebase on Sat Nov 16 14:07:15 MST 2013 by processing URL <b>metadata.xml</b> in item <a href=""></a> <br />

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