A 2007 presentation for the annual meeting of the Association of Environmental and Engineering Geologists provides an overview of the geologic setting of Matilija Dam. The presentation illustrates the presence of geologic faults and foundation problems with the dam.
The presentation also includes a description of the alkali aggregate reaction that compromised the strength of the concrete and led to the 1965 "notching" to lower the dam crest.
The complete talk may be downloaded here:
THE CASE FOR REMOVING MATILIJA DAM, J. David Rogers, Ph.D., P.E., P.G. University of Missouri-Rolla and G. Mattias Kondolf, Ph.D. University of California, Berkeley, Annual Meeting Association of Environmental and Engineering Geologists, Los Angeles, California September 28, 2007
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