Pin Shuai joined PNNL in 2017 as a postdoctoral researcher. He became a staff scientist in 2020. At PNNL, he is mainly working on the Subsurface Biogeochemical Research Science Focus Area project to study hydrologic exchange flows in large regulated rivers. His primary research interests focus on groundwater-surface water interactions, contaminant transport, and biogeochemical cycling at the terrestrial-aquatic interface.

Research Interest

  • Groundwater-surface water interactions
  • Coupled reactive transport modeling
  • Biogeochemical processes in the hyporheic zone


  • PhD in Geology, Texas A&M University, 2017
  • MS in Water Resource Engineering, Wuhan University, 2013
  • BS in Water Resource Engineering, Wuhan University, 2011

Affiliations and Professional Service

  • American Geophysical Union



  • Zachara JM, X Chen, X Song, P Shuai, CJ Murray, and CT Resch. 2020. "Kilometer-scale hydrologic exchange flows in a gravel bed river corridor and their implications to solute migration." Water Resources Research 56, no. 2:Article NO. e2019WR025258. PNNL-SA-137616. doi:10.1029/2019WR025258


  • Shuai P, X Chen, X Song, G Hammond, JM Zachara, PD Royer, and H Ren, et al. 2019. "Dam Operations and Subsurface Hydrogeology Control Dynamics of Hydrologic Exchange Flows in a Regulated River Reach." Water Resources Research 55, no. 4:2593-2612. PNNL-SA-138598. doi:10.1029/2018WR024193


  • Berube, M., Jewell, K., Myers, K. D., Knappett, P. S. K., Shuai, P., Hossain, A., Lipsi, M., Hossain, S., Hossain, A., Aitkenhead-Peterson, J., Ahmed, K. M., & Datta, S. (2018). The fate of arsenic in groundwater discharged to the Meghna River, Bangladesh. Environmental Chemistry, 15(2), 29. https://doi.org/10.1071/EN17104


  • Shuai P, MB Cardenas, PSK Knappett, PC Bennett, BT Neilson. (2017). ”Denitrification in the banks of fluctuating rivers: The effects of river stage amplitude, sediment hydraulic conductivity and dispersivity, and ambient groundwater flow.” Water Resources Research, 53(9), 7951–7967. https://doi.org/10.1002/2017WR020610 
  • Shuai P, PSK Knappett , S Hossain, A Hosain, K Rhodes, KM Ahmed, MB Cardenas. (2017). “The Impact of the Degree of Aquifer Confinement and Anisotropy on Tidal Pulse Propagation.” Groundwater, 55(4), 519–531. https://doi.org/10.1111/gwat.12509 


  • Knappett P, K Myers, P Shuai, K Rhodes, K Jewell, J Peterson, N Dimova, S Datta, M Berube, A Hossain, M Lipsi, S Hossain, A Hosain, K Ahmed, and M Cardenas. (2016). “Tracking the fate of arsenic in groundwater discharged to the Meghna River.” Arsenic Research and Global Sustainability: Proceedings of the Sixth International Congress on Arsenic in the Environment (As2016), June 19-23, 2016, Stockholm, Sweden, 43.
  • Knappett PSK, BJ Mailloux, I Choudhury, MR Khan, HA Michael, S Barua, DR Mondal, MS Steckler, SH Akhter, KM Ahmed, B Bostick, CF Harvey, M Shamsudduha, P Shuai, I Mihajlov, R Mozumder, and A van Geen. (2016). “Vulnerability of low-arsenic aquifers to municipal pumping in Bangladesh.” Journal of Hydrology, 539, 674–686. https://doi.org/10.1016/j.jhydrol.2016.05.035
  • Briody AC, MB Cardenas, P Shuai, PSK Knappett, and PC Bennett. (2016). “Groundwater flow, nutrient, and stable isotope dynamics in the parafluvial-hyporheic zone of the regulated Lower Colorado River (Texas, USA) over the course of a small flood.” Hydrogeology Journal, 24(4), 923–935. https://doi.org/10.1007/s10040-016-1365-3