Map showing recent (1997-98 El Nino) and historical landslides, Crow Creek and vicinity, Alameda and Contra Costa Counties, California

Coe, Jeffrey A.; Godt, Jonathan; Tachker, Pierre

Abstract:

This report documents the spatial distribution of 3,800 landslides caused by 1997-98 El Ni?o winter rainfall in the vicinity of Crow Creek in Alameda and Contra Costa Counties, California. The report also documents 558 historical (pre-1997-98) landslides. Landslides were mapped from 1:12,000-scale aerial photographs and classified as either debris flows or slides. Slides include rotational and translational slides, earth flows, and complex slope movements. Debris flows and slides from the 1997-98 winter modified 1 percent of the surface of the 148.6 km2 study area. Debris flows were scattered throughout the area, regardless of the type of underlying bedrock geology. Slides, however, were concentrated in a soft sandstone, conglomerate, and clayey group of rock units. Digital map files accompany the report.

Genre:

USGS Numbered Series

ProdID:

69818

Citation Author:

Coe, Jeffrey A.; Godt, Jonathan; Tachker, Pierre

Citation Contributing Office:

Citation Datum:

Citation Day:

Citation Edition:

Version 1.0

Citation Editor:

Citation End Page:

Citation Issue:

Citation Keywords:

Citation Language:

ENGLISH

Citation Larger Work Title:

Citation LatN:

Citation LatS:

Citation LonE:

Citation LonW:

Citation Month:

Citation No Pagination:

Citation Number Of Pages:

Citation Online Only Flag:

Citation Phsyical Description:

plate and 16 p. pamphlet

Citation Projection:

Citation Public Comments:

Citation Publisher:

Citation Series:

Scientific Investigations Map

Citation Series Code:

SIM

Citation Series Number:

2859

Citation Search Results Text:

Map showing recent (1997-98 El Nino) and historical landslides, Crow Creek and vicinity, Alameda and Contra Costa Counties, California; 2004; SIM; 2859; Coe, Jeffrey A.; Godt, Jonathan; Tachker, Pierre