Seismic-stability evaluation of Folsom Dam and Reservoir Project. Report 4. Mormon Island Auxiliary Dam. Phase 1. Technical report, 1982-1988

Technical Report · Tue Mar 01 00:00:00 EST 1988

OSTI ID:6921811

Hynes-Griffin, M E; Wahl, R E; Donaghe, R T; Tsuchida, T

The man-made water retaining structures at the Folsom Dam and Reservoir Project, located on the American River about 20 miles upstream of the City of Sacramento, Calif., were evaluated for their seismic safety in the event of a Magnitude 6.5 earthquake occurring on the East Branch of the Bear Mountains Fault Zone at a distance of about 15 km. This report documents the Phase I study of Mormon Island Auxiliary Dam, one of the zoned embankment dams at the Folsom Project. The evaluation process involved extensive review of construction records, field and laboratory investigations, and analytical studies. It was determined that Mormon Island Auxiliary Dam will not perform satisfactorily. Remedial or hazard-mitigating action is recommended as well as a Phase II study which consists of additional field investigation and analyses to determine the lateral extent of remedial action necessary. The Phase II studies are documented in Report 8 of this series.

• Research Organization: Army Engineer Waterways Experiment Station, Vicksburg, MS (USA). Geotechnical Lab.
• OSTI ID: 6921811
• Report Number(s): AD-A-194227/5/XAB; WES/TR/GL-87-14
• Country of Publication: United States
• Language: English

Related Subjects

58 GEOSCIENCES
CALIFORNIA
DAMS
STABILITY
EARTHQUAKES
SEISMIC EFFECTS
EMBANKMENTS
DECOMPOSITION
ENGINEERING GEOLOGY
LIQUEFACTION
PROGRESS REPORT
REMEDIAL ACTION
CHEMICAL REACTIONS
DOCUMENT TYPES
FEDERAL REGION IX
GEOLOGY
NORTH AMERICA
SEISMIC EVENTS
THERMOCHEMICAL PROCESSES
USA
580201* - Geophysics- Seismology & Tectonics- (1980-1989)