Roger's research interests include:
- The physical, geochemical and biological processes and conditions in the hyporheic zone of the lower Fraser River, Vancouver.
- Neutral - pH drainage from mine waste rock at the Antamina Mine in Peru.
- Scale up for models of reactive transport in porous media.
- Fugitive gas effects on groundwater in northeast British Columbia.
- Characterization strategies in integrated surface-water groundwater systems.