Record Details

page 91

Digital Collections at BYU

Field Value
Title page 91 State review, Bonneville Unit, Central Utah Project, Final report, page 91
Coverage Electronic reproduction;
Format 91 text/PDF
Rights Brigham Young University; http://lib.byu.edu/about/copyright/generic.php Public Domain Public
Language English; eng; en
Relation Central Utah Project; Western Waters Digital Library; thick surficial materials further definition of faults and interrelationships in the dam site area and more mor nore e complete definition of potential ground failure and sliding of either bedrock or surficial material intothe into the jordanelle Jor danelle reservoir based on work in the 1984 field season the bureau of reclamation geologists appear confident that 0 the weathering profile is not deeper than expected 0 areas of poor quality rock have been identified 0 important fracture zones and fracture density have been identified 0 there seems to be no additional evidence of displacement of bedrock by faulting at the dam site and 0 maximum depth to bedrock at the dam site is less then 100 feet and in the thie reservoir area less than 500 feet the dam site safety consultants report referred to earlier discussed in detail the earthquake hazard in the vicinity of the dam site three issues were examined local earthquake hazards regional earthquake hazards and reservoir induced earthquakes with respect to local earthquake hazards the report contends that small earthquakes occur in the area east of the wasatch range but they cannot be related to geologic structures mapped at the surface the frequency and magnitude of these earthquakes and the absence of young surface faults indicate that an allowance should be made for an earthquake with a magnitude of 6.0 60 60 go to 6.5 65 65 in the vicinity of the jordanelle Jor danelle dam site because the earthquakes cannot be correlated with known geologic structures the assumption should be made that the earthquake may occur at any location the consultants did not firmly establish three meters nearly ten feet as the maximum credible displacement but stated further work would likely establish three meters as a defensible upper limit for design of the dam aam gam 91
Identifier http://cdm15999.contentdm.oclc.org/cdm/ref/collection/WesternWatersProject/id/10890

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