Engineering Geologist and Geologist

2006 - present
Staff Consultant
Cornforth Consultants

1988 - 2006
Chief of Geology Section
Corps of Engineers, Portland District, Oregon

1974 - 1988
Corps of Engineers, Portland District, Oregon

1969 B.S.
University of Washington

Member, Association of Engineering Geologists



James B. Griffiths
Staff Consultant

Mr. Griffiths has over 39 years of experience as an Engineering Geologist. As Chief Geologist of the Corps of Engineers Portland District, he was responsible for major geotechnical assignments dealing with dams, navigation locks, canals, fish passages, jetties and intake towers. Specific areas of expertise include rock mechanics, seismicity, slope stability, tunneling, geotechnical instrumentation, foundation treatment and rock anchors. Representative projects include the following:

  • John Day Dam Navigation Lock Repair, John Day, Oregon
  • Bonneville Dam Second Powerhouse, Explorations and Foundation Design, Cascade Locks, Oregon
  • Spirit Lake Outlet Tunnel, Mount St. Helens, Washington
  • Soda Springs Dam Fish Passage Structures, Toketee Falls, Oregon
  • Mount St. Helens SRS Dam, Toutle River, Washington
  • Yaquina Bay Jetty, Newport, Oregon
  • Co-Author of Corps of Engineers Manual on Test Quarries and Test Fills
  • Cougar Dam Intake Tower, McKenzie River, Oregon
  • Seven Oaks Dam Diversion Tunnel and Outlet Works, Redlands, California
  • The Dalles Dam Spillwall Extension, The Dalles, Oregon
  • Columbia River North and South Jetties, Astoria, Oregon
  • Willamette Falls Dam Fish Passage Structure, West Linn, Oregon
  • Hills Creek Dam Safety, Oakridge, Oregon
  • Cerrillos Dam Outlet Works, Puerto Rico
  • Bonneville Dam New Navigation Lock, Cascade Locks, Oregon
  • South Tillamook Jetty Capping, Value Engineering Study, Garibaldi, Oregon