Geoff Hales


  • Senior Geologist, McBain Associates Applied River Sciences Arcata, CA, 2001 – present. 
  • Lecturer and Faculty Associate, Cal Poly Humboldt, Arcata, CA 2015 - present
  • Geologist, Kleinfelder, Inc., Salt Lake City, UT 1999 - 2001
  • Geologist, Busch Geotechnical Consultants, Arcata, 1995 - 1999
  • Geologist, U.S. Geological Survey, Water Resources Division, Carson City, NV; NAGT Internship 1995

Specialty Area

Fluvial and hillslope geomorphology, applied field geology


I have been a consulting geologist for over 25 years, and my teaching focuses on applied field methods for contemporary practice with strategies and advice for entering the professional world.


MS, Environmental Systems, Humboldt State University, 1999; BA, Geology, Humboldt State University, 1995


I am a licensed professional geologist specializing in fluvial and hillslope geomorphology. My work emphasizes projects that focus on flow and sediment management needs to restore geomorphic processes on regulated rivers, including sediment supply and sediment yield analyses; developing sediment management plans designed to help mitigate physical and biological impacts resulting from streamflow and sediment regulation; and developing and implementing monitoring programs to evaluate sediment mobility, transport, and associated geomorphic changes. My professional background also includes engineering geology (hillslope processes, slope stability, fault trenching, drilling, soils sampling and testing) and environmental geology (soil, surface water, and groundwater sampling; contaminant fate and transport analysis).