SOCIETY AFFILIATIONS

American Geophysical Union (1989 - present)     
American Institute of Professional Geologists (1993-present)
American Society of Civil Engineers (1975-present) elected member 1984
American Society for Photogrammetry and Remote Sensing (1990-present)
American Society for Testing and Materials (1985-97), Committee D-19 (1986-89)  
Association of Environmental and Engineering Geologists (1976 - present)
Association of Soil and Foundation Engineers (1985 – 2001; academic member 2002-present)
Earthquake Engineering Research Institute (1989 – present)
Geological Society of America (1975-present) elected Fellow in 1996
International Association of Engineering Geologists (1993 – present)
International Commission on Large Dams (1980 – present), Life Member since 1988
International Landslide Research Group (1992 – present)
International Society for Rock Mechanics (1984-1995)
International Society for Soil Mechanics & Foundation Engineering (1987-97)
National Society of Professional Engineers (1989 – present)
United States Society of Dams (1980 - present), Life Member since 1988