Raymond, D.E. & Grant, L.B.
Poster presented at Southern California Earthquake Center Annual Conference 1999 in Palm Springs, California.
The San Joaquin Hills region of Orange County is undergoing rapid commercial and residential development. The anticlinal structure of the area is likely due to a combination of tectonic uplift and seismic activity on local fault systems. The goal of this project was to determine the hazards of the fault zones in the area while there may still be time to translate these findings into sound planning for the area.
Geotechnical and fault investigation reports were collected for as many sites as possible in the San Joaquin Hills region. The findings from these reports were then collected and transferred into a GIS-based map. This map was designed in such a way to allow a convenient regional view of report coverage and findings, and was linked to a more complete bibliography created to display report titles, conclusions, and relevant trench logs. Because little conclusive or comprehensive information was found during this study, a strong case can be made for the need for further fault investigations in the San Joaquin Hills.