Landslide Technology: Derek H. Cornforth, P.E. - Former C.E.O. and Staff Consultant

Derek Cornforth has
years of
geotechnical engineering experience

Dr. Cornforth has had direct involvement in 200 landslides during his long career as a geotechnical engineer. He founded Landslide Technology in 1983 based on his training and experience in this specialty. He is especially qualified in evaluating soil strength and properties, field instrumentation with inclinometers and piezometers, and producing innovative treatments to relatively difficult landslide occurrences. He has written numerous technical papers and lectured about landslides, and has served on national and international committees. On legal issues involving landslides, he has provided expert witness testimony on numerous occasions.

Dr. Cornforth's definitive book, Landslides in Practice: Investigation, Analysis, and Remedial/Preventative Options in Soils (Wiley, 2005) is now available.

Some representative projects include:

Goat Lick Slide, Essex, Montana
Percy Slide, Leaburg, Oregon
Faraday Slides, Estacada, Oregon
Washington Park Slide, Portland, Oregon
Newport Hills Ravine Slides, Washington
Hagg Lake Slides, Gaston, Oregon
Bull Run Dam No. 1 Access Road Slide, Sandy, Oregon
North Kelso Interchange Slide, Kelso, Washington
Ross Island, Portland, Oregon
Terminal 2 Flow Slides, Portland, Oregon
Reservoir No. 6 Liquefaction Stability, Portland, Oregon
Dock failure, Skagway, Alaska
Oahe Dam Movement, North Dakota
Frog Lake Slide, Clackamas River, Oregon