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GEOREF RECORD

Impact of the 1992-1993 winter storms on hydroconsolidation, differential settlement, and ground fissures, Murrieta area, southwestern Riverside County, California

Roy J. Shlemon and Mack Hakakian
Impact of the 1992-1993 winter storms on hydroconsolidation, differential settlement, and ground fissures, Murrieta area, southwestern Riverside County, California (in Storm-induced geologic hazards; case histories from the 1992-1993 winter in Southern California and Arizona, Robert A. Larson (editor) and James E. Slosson (editor))
Reviews in Engineering Geology (1997) 11: 49-59

Abstract

The 1992-1993 winter storms in Murrieta, California, produced rainfall that exceeded 200% of normal. This water infiltrated into buried channels filled with up to 30 m of alluvium and thus added to rising water levels caused by accelerating urban runoff during the previous 5 yr. Downstream valleys in the California Oaks area of Murrieta, now modified to support golf courses, were little affected by the rainfall, for most of the underlying sediments had already been saturated. Upstream, however, narrow alluvium-filled valleys were subjected to 3 to 4 m of groundwater-level rise in a 2-month period. Depending on local channel geometry and presence of fill loads, the 1992-1993 storms accelerated alluvial saturation, hydroconsolidation of collapsible soils, differential settlement, and formation of ground fissures. This combined natural and man-induced rise in regional groundwater levels damaged many houses and streets and locally impaired underground utilities. Alleged damages exceed $50 million, and litigation continues unabated. The Murrieta (California Oaks) hydroconsolidation, differential settlement, and ground fissures provide a case study of new challenges to the engineering geologist in California.


ISSN: 0080-2018
EISSN: 2169-799X
Coden: GAEGA4
Serial Title: Reviews in Engineering Geology
Serial Volume: 11
Title: Impact of the 1992-1993 winter storms on hydroconsolidation, differential settlement, and ground fissures, Murrieta area, southwestern Riverside County, California
Title: Storm-induced geologic hazards; case histories from the 1992-1993 winter in Southern California and Arizona
Author(s): Shlemon, Roy J.Hakakian, Mack
Author(s): Larson, Robert A.editor
Author(s): Slosson, James E.editor
Affiliation: P.O. Box 3066, Newport Beach, CA, United States
Affiliation: Los Angeles County Department of Public Works, Alhambra, CA, United States
Pages: 49-59
Published: 1997
Text Language: English
Publisher: Geological Society of America (GSA), Boulder, CO, United States
ISBN: 0-8137-4111-4
References: 32
Accession Number: 1998-019149
Categories: Engineering geology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. sect., 1 table, sketch maps
N33°25'00" - N34°04'60", W117°42'00" - W114°25'00"
Secondary Affiliation: Slosson and Associates, USA, United States
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States
Update Code: 199808
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