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Evan Arntzen

Evan Arntzen

Pacific Northwest National Laboratory
PO Box 999
Richland, WA 99352


Mr. Arntzen is a geologist who supports research projects evaluating and monitoring aquatic habitat, groundwater/surface water interaction, and water quality within large river systems. Mr. Arntzen completed a graduate thesis evaluating the hydrogeology and water quality of the groundwater/surface-water mixing zone within the Hanford Reach of the Columbia River between 1997 and 2002. Since 2002, Mr. Arntzen has conducted research evaluating how physicochemical properties of the hyporheic zone affect habitat quality. His work includes evaluations of water quality, contaminant transport, and physical habitat quality, all with an emphasis on the impact to aquatic organisms that are dependent on the hyporheic zone. He has worked in areas including the Hanford Reach of the Columbia River, the Columbia River Gorge, the Snake River, and the Gray’s River watershed.

Research Interests

  • Hydrogeology
  • Groundwater/surfacewater interaction
  • Habitat evaluation
  • Water quality

Education and Credentials

  • M.S., Geology, Portland State University, 2002.
  • B.S., Geology, Eastern Washington University, 1996.
  • Licensed geologist (Washington).

Affiliations and Professional Service

  • American Geophysical Union
  • Geological Society of America
  • American Fisheries Society

PNNL Publications



  • Mueller RP, EV Arntzen, MA Nabelek, BL Miller, KJ Klett, and RA Harnish. 2012. "Laboratory testing of a modified electroshocking system designed for deepwater juvenile lamprey sampling ." Transactions of the American Fisheries Society 141(3):841-845.  doi:10.1080/00028487.2012.675908



  • Arntzen EV. 2009. Temperature and Water Depth Monitoring Within Chum Salmon Spawning Habitat Below Bonneville Dam -- Annual Report -- October 2007-September 2008 PNNL-18561, Pacific Northwest National Laboratory, Richland, WA. 
  • Arntzen EV, DR Geist, KJ Murray, J Vavrinec, III, EM Dawley, and DE Schwartz. 2009. "Influence of the Hyporheic Zone on Supersaturated Gas Exposure to Incubating Chum Salmon." North American Journal of Fisheries Management 29(6):1714-1727.  doi:10.1577/M08-212.1
  • Arntzen EV, KD Hand, KM Carter, DR Geist, KJ Murray, EM Dawley, VI Cullinan, RA Elston, and J Vavrinec, III. 2009. Total Dissolved Gas Effects on Incubating Chum Salmon Below Bonneville DamPNNL-18081, Pacific Northwest National Laboratory, Richland, WA. 
  • Baldwin BR, AD Peacock, M Gan, CT Resch, EV Arntzen, AN Smithgall, S Pfiffner, BM Freifeld, DC White, and PE Long. 2009. "In-Well Sediment Incubators to Evaluate Microbial Community Stability and Dynamics following Bioimmobilization of Uranium." Remediation 19(4):73-89.  doi:10.1002/rem.20218
  • Williams KH, A Kemna, MJ Wilkins, JL Druhan, EV Arntzen, AL N'Guessan, PE Long, SS Hubbard, and JF Banfield. 2009. "Geophysical Monitoring of Coupled Microbial and Geochemical Processes During Stimulated Subsurface Bioremediation." Environmental Science & Technology 43(17):6717–6723. 




  • Arntzen EV, DR Geist, and PE Dresel. 2006. "Effects of Fluctuating River flow on Groundwater/Surface Water Mixing in the Hyporheic Zone of a Regulated, Large Cobble Bed River ." River Research and Applications 22(8):937-946.  doi:10.1002/rra.947


  • Hanrahan TP, DR Geist, and EV Arntzen. 2005. "Habitat quality of historic Snake River fall Chinook salmon spawning locations and implications for incubation survival: part 1, substrate quality." River Research and Applications 21(5):455-467. 



  • Moser DP, JK Fredrickson, DR Geist, EV Arntzen, AD Peacock, SMW Li, CM Spadoni, and JP McKinley. 2003. "Biogeochemical Processes and Microbial Characteristics Across Groundwater - Surface Water Boundaries of the Hanford Reach of the Columbia River." Environmental Science and Technology 37(22):5127-5134. 


  • Geist DR, TP Hanrahan, EV Arntzen, GA McMichael, CJ Murray, and YJ Chien. 2002. "Physicochemical charateristics of the hyporheic zone affect redd site selection of chum salmon and fall chinook salmon in the Columbia River." North American Journal of Fisheries Management 22(4):1077-1085. 

Selected Publications


  • Baldwin, B.R., Peacock, A.D., Gan, M., Resch, C.T., Arntzen, E.V., Smithgall, A.N., Pfiffner, S., White, D.C., and P.E. Long. 2009. In-Well Sediment Incubators to Evaluate Microbial Community Stability and Dynamics following Bioimmobilization of Uranium. Remediation 19 (4): 73-89.
  • Southard, S.L., D.R. Geist, E.V. Arntzen, K.M. Carter, and G.E. Johnson. 2009. Proceedings of the 2008 Workshop on Total Dissolved Gas and Chum Salmon. PNNL-SA-64358. Pacific Northwest National Laboratory, Richland, Washington.







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