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Scott Waichler

Scott Waichler

Pacific Northwest National Laboratory
PO Box 999
Richland, WA 99352


Scott Waichler has extensive experience in processing, analyzing, and visualizing hydrologic data. He is a scientist/programmer/task leader who works in a variety of hydrology subfields including groundwater flow and transport, surface water flow, watershed hydrology, meteorology, and statistics. He combines scientific subject matter knowledge with skill in data processing, visualization, statistical methods, and publishing experience to successfully serve projects. Scott is an expert in the R scripting language and also works with Python and VisIt. He has simulated hydrologic systems with the models STOMP, DHSVM, MASS1, and others.

Research Interests

  • Data analytics and visualization
  • Modeling of groundwater, surface water, watersheds
  • Statistics in time and space, including timeseries, geostatistics, and extreme events
  • Machine learning

Education and Credentials

  • Ph.D., Bioresource Engineering, Oregon State University, 2000. Statistics Minor
  • M.S., Hydrology/Hydrogeology, University of Nevada, 1991
  • B.S., Geology, Stanford University, 1984

PNNL Publications


  • Long PE, KH Williams, JA Davis, PM Fox, MJ Wilkins, SB Yabusaki, Y Fang, SR Waichler, ES Berman, M Gupta, DP Chandler, CJ Murray, AD Peacock, L Giloteaux, KM Handley, DR Lovley, and JF Banfield. 2015. "Bicarbonate Impact on U(VI) Bioreduction in a Shallow Alluvial Aquifer." Geochimica et Cosmochimica Acta 150:106-124.  doi:10.1016/j.gca.2014.11.013


  • Freedman VL, X Chen, SA Finsterle, MD Freshley, I Gorton, LJ Gosink, E Keating, C Lansing, WAM Moeglein, CJ Murray, GSH Pau, EA Porter, S Purohit, ML Rockhold, KL Schuchardt, C Sivaramakrishnan, VV Vesselinov, and SR Waichler. 2014. "A high-performance workflow system for subsurface simulation." Environmental Modelling & Software 55:176-189.  doi:10.1016/j.envsoft.2014.01.030



  • Freedman VL, SR Waichler, RD Mackley, and JA Horner. 2012. "Assessing the Thermal Environmental Impacts of an Groundwater Heat Pump in Southeastern Washington State." Geothermics 42:65-77.  doi:10.1016/j.geothermics.2011.10.004


  • Yabusaki SB, Y Fang, KH Williams, CJ Murray, AL Ward, R Dayvault, SR Waichler, DR Newcomer, FA Spane, and PE Long. 2011. "Variably Saturated Flow and Multicomponent Biogeochemical Reactive Transport Modeling of a Uranium Bioremediation Field Experiment." Journal of Contaminant Hydrology 126(3-4):271-290.  doi:10.1016/j.jconhyd.2011.09.002




  • Dresel PE, KB Olsen, JC Hayes, JI McIntyre, SR Waichler, and BM Kennedy. 2008. "Environmental Applications of Stable Xenon and Radioxenon Monitoring." Journal of Radioanalytical and Nuclear Chemistry 276(3):763-769. 
  • Yabusaki SB, Y Fang, and SR Waichler. 2008. "Building Conceptual Models of Field-Scale Uranium Reactive Transport in a Dynamic Vadose Zone-Aquifer-River System." Water Resources Research 44:W12403.  doi:10.1029/2007WR006617


  • Dresel PE, KB Olsen, JC Hayes, JI McIntyre, and SR Waichler. 2006. "Sampling and Analysis of Rare Gas Isotopes for In Situ Delineation of Buried Transuranic and Tritium Waste ." In Waste Management '06: Global Accomplishments in Environmental and Radioactive Waste Management: Education and Opportunity for the Next Generation of Waste Management Professionals.  Arizona Board of Regents, Tucson, AZ. 




  • Waichler SR, and MS Wigmosta. 2003. "Development of Hourly Meteorological Values From Daily Data and Significance to Hydrological Modeling at H.J. Andrews Experimental Forest." Journal of Hydrometeorology 4(2):251-263. 
  • Vermeul VR, MP Bergeron, CR Cole, CJ Murray, WE Nichols, TD Scheibe, PD Thorne, SR Waichler, and YL Xie. 2003. Transient Inverse Calibration of the Site-Wide Groundwater Flow Model (ACM-2): FY03 Progress Report PNNL-14398, Pacific Northwest National Laboratory, Richland, WA. 


Additional Information