EDUCATION
1975 Ph.D. - Geological Sciences - University of Washington 1971 M.S. -
Geological Sciences - University of Washington 1969 B.S. - Geology - University
of Puget Sound
PROFESSIONAL REGISTRATION
Licensed Geologist - Washington
Licensed Engineering Geologist - Washington
Registered Geologist - Oregon
Certified Engineering Geologist - Oregon
PROFESSIONAL AFFILIATIONS
Member, Geological Society of America Member, Association of Engineering
Geologists
PROFESSIONAL EXPERIENCE
Donald W. Tubbs has over 25 years experience in engineering geology, applied
geomorphology, geologic hazards evaluation, surface water hydrology and
groundwater hydrology. His 1975 Ph.D. dissertation on "Causes, Mechanisms and
Prediction of Landsliding in Seattle" was one of the earliest regional geologic
hazards studies in western Washington. He has held faculty positions at Michigan
Technological University and at the University of Kansas, where he taught
courses in hydrogeology, environmental geology and engineering geology. Over the
years he has been a speaker on these subjects at seminars presented by
professional organizations and public agencies in the Pacific Northwest and also
in the Philippines.
Dr. Tubbs has been the principal investigator and project manager for studies
involving material resources, surface water and groundwater hydrology, erosion
and sediment transport rates, foundation and slope-stability problems, and
landslide-hazards mapping. His consulting experience includes mapping of
geologic hazards for King and Snohomish Counties, and for the Cities of Edmonds,
Redmond, Renton and Tukwila, together with numerous site-specific investigations
for private sector clients. The following is a brief description of some of the
services he offers:
Landslide and Steep Slope Investigations: Provides geologic mapping and
analysis of landslides and develops criteria for building near steep slopes. He
has worked for various cities and counties helping develop their steep slope
ordinances. He has also studied large landslide masses that involve complete
neighborhoods, such as the Meadowdale slide complex in Edmonds and the Gibraltar
Road Landslide on Fidalgo Island.
Hydrogeologic Studies: Provides hydrogeologic studies to developers and
municipalities for the evaluation of the impacts of site development and
drainage basin land use changes. Hydro geologic analysis includes groundwater,
surface water and water balance analyses. These studies are becoming more
important as the value of wetlands becomes more understood. He completed such
studies for Redmond Ridge, a large master plan development in King County.
Sediment Transport and Erosion: Provides sediment transport analysis to be
used in evaluating sources and areas of deposition within a river system. Such
studies are used to evaluate fisheries impacts of site and basis development,
and to develop methods of helping stabilize certain portions of the river, and
evaluating the effectiveness of bank stabilization and dredging. He performed
such an evaluation for Coal Creek in King County.
Follow this link to the Tubbs Geosciences
website to learn more about Dr. Tubbs.
