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research associates


Jackie Randell
B.S., Marine Biology, University of New Brunswick, 2002

Jackie has come to our group after extensive experience as a lab manager and a lab/field technician at the Bimini Biological Field Station and then the University of Calgary. She is exactly the person you want in the field in that she knows how everything (everything!) works, and notably more organized than the rest of us. She also knows a thing or two about sharks, which we think could come in handy at some point. When not at work, Jackie loves being outside and taking advantage of our close proximity to the mountains. She enjoys trail running, climbing and backcountry skiing but also likes painting landscapes and knitting. E-mail Jackie.


graduate students


Fern Beetle-Moorcroft
A.B., Geology, Haverford College (at Bryn Mawr College), 2014
M.S. student, Hydrologic Science and Engineering, Colorado School of Mines, 2018-present

Fern is interested in a coupled approach to understanding soil moisture, tree root networks, and evapotranspiration through modeling and geophysics. She also works at HRS Water Consultants. In her free time, she plays Ultimate Frisbee with her team, enjoys small batch brewing, and going on hikes with her dog. E-mail Fern.

Megan Doughty
B.S. Geological Engineering, Colorado School of Mines, 2017
M.S. student, Hydrologic Science and Engineering, Colorado School of Mines, 2017-present

Megan studied Geological Engineering here at Mines where she discovered her interest in hydrology from working with some of the graduate students. After graduation, she decided to join them and pursue her M.S. here as well. Megan is looking at the relationship between hyporheic flow changes and increasing channel complexity due to logjams in a project with Ellen Wohl and Audrey Sawyer. Outside of her studies, she enjoys hiking, skiing, rafting, and backpacking among other outdoor activities. She also plays on the club water polo team. E-mail Megan.

Allan Foster
B.S., Geological Engineering, Colorado School of Mines, 2017
M.S. student, Hydrologic Science and Engineering, Colorado School of Mines, 2017-present

Allan worked with us as an undergraduate, and we liked him so much we twisted his arm to stay with us for his M.S. Allan is interested in "anomalous" contaminant transport processes, and is working on both experiments and modeling. He has more alacrity than anyone you know, and sometimes stays overnight in the lab because he's so excited about his work, even though we tell him not too. When not bleary-eyed in the lab on the verge of a breakthrough, Allan enjoys exploring nature, including hiking, running, climbing, longboarding and snowboarding. E-mail Allan.

Ryan Harmon
B.S., Earth Science, B.A., Environmental Studies, University of California Santa Cruz, 2014
Ph.D. student, Hydrologic Science and Engineering, Colorado School of Mines, 2015-present

After graduating from the UCSC, Ryan worked as a lab manager and staff researcher in Andrew Fisher’s Hydrogeology group at UCSC. Since coming to Mines, he has been focusing his interests towards understanding the links between evapotranspiration and groundwater, and how ecological processes modify hydrologic flow paths in the critical zone. Ryan, in collaboration with Holly Barnard, is using geophysical techniques and stable isotopes to assess these dynamics on a hillslope scale in the H.J. Andrews Experimental Forest. When away from his studies, you will find Ryan trying to climb, run, hike, or ski up some cliff side or mountain. E-mail Ryan.

Sawyer McFadden
B.S., Environmental Geochemical Sciences (minor: Computer Science), SUNY-New Paltz, 2018
Ph.D. student, Hydrologic Science and Engineering, Colorado School of Mines, 2018-present

Sawyer has recently moved to the Front Range to start a PhD in collaboration with Ellen Wohl and Audrey Sawyer on the impact of logjams on hyporheic exchange in the Poudre Canyon of CO. In his free time, he enjoys hiking, biking, wearing plaid flannels (temperature permitting), and drinking coffee a bit too much. E-mail Sawyer.

David Rey
B.S., Earth Science (minor: Mathematics), Montana State University, 2012
M.S., Hydrologic Science and Engineering, Colorado School of Mines, 2017
Ph.D. student, Hydrologic Science and Engineering, Colorado School of Mines, 2017-present

M.S. Thesis: Exploring the effect of climate perturbations on water availability for renewable energy development in the Indian Wells Valley, California

After two years in the utility industry, Dave came to Mines for hydrology, and for his M.S., built a regional-scale model of flow of the Indian Wells Valley in CA, looking at water use for potential renewable energy projects. For his Ph.D., Dave is collaborating with Michelle Walvoord on the NASA ABoVE project as a USGS Pathways Intern. He is using a combination of remote sensing and geophysical techniques to evaluate hydrologic change in permafrost systems. When his focus strays from hydrology, you can find Dave hard at work plotting his next mountain adventure. E-mail Dave.

Ariel Rickel
B.S., Geology and Geological Engineering, Colorado School of Mines, 2018
M.S. student, Hydrologic Science and Engineering, Colorado School of Mines, 2018-present

After assisting several PhD candidates in their research endeavors as an undergraduate, Ariel discovered a love for research and thus decided to continue on for a Master’s degree. For her degree, she will be looking geophysical imaging associated with nutrient retention in streams. To make sure school is not her entire life, Ariel manages to find time for hobbies that include reading, hiking, and some sad attempts at rock climbing. E-mail Ariel.

Kenneth Swift Bird
B.S., Geology, Hope College, 2016
M.S., Hydrologic Science and Engineering, Colorado School of Mines, 2018
Ph.D. student, Hydrologic Science and Engineering, Colorado School of Mines, 2018-present


M.S. Thesis: Hydrogeologic controls of uranium and arsenic mobility in groundwater of the Pine Ridge Reservation, South Dakota

Kenny is a Gates Millennium Scholar whose M.S. work explored controls on the transport of uranium- and arsenic-rich groundwater on the Pine Ridge Reservation. For his Ph.D., he is expanding his work on groundwater contamination on tribal lands. Away from research, Kenny enjoys new hiking trails, distance running, playing sports, exploring the mountains with his fiancee and two dogs, and being on the front cover of magazines. E-mail Kenny.


expatriates (in reverse chronological order)


[20] - Amy Rice
Bachelors of Music, University of Arizona, 2003
M.S., Hydrology, University of Arizona, 2009
Ph.D., Hydrologic Science and Engineering, Colorado School of Mines, 2018

Dissertation: Groundwater-quality implications of methane leakage from hydrocarbon wellbores

Awards:
  • Colorado Ground Water Association Harlan Erker Memorial Scholarship, 2014
  • Association of Women Geoscientists Chrysalis Scholarship, 2016
Position post-CSM: Hydrogeologist/Modeler, Neptune and Company, Los Alamos, NM

[19] - Helen Malenda
B.S., Geology, Kutztown University, 2011
M.S., Earth and Environmental Sciences, Lehigh University, 2015
M.S., Hydrologic Science and Engineering, Colorado School of Mines, 2018

M.S. Thesis: From grain to floodplain: Evaluating floodplain hydrostratigraphy using sedimentology, geophysics and remote sensing

Awards:
  • NSF Graduate Research Fellow, 2015
  • NSF GRIP Fellow, 2017
Position post-CSM: Hydrogeologist, Colorado Division of Water Resources, Denver, CO

[18] - Savannah Miller
B.S., Geology, Clemson University, 2014
M.S., Hydrologic Science and Engineering, Colorado School of Mines, 2016
Post-Masters Researcher, Hydrologic Science and Engineering, Colorado School of Mines, 2016-2017

Post-Masters Project: Numerical modeling of non-local transport coupled to inverse methods, for solute and geophysical data

Position post-CSM: Hydrogeologist, Brown and Caldwell, Lakewood, CO

[17] - Emily Voytek
B.S., Geology, Tufts University, 2008
M.S., Geology, University of Minnesota Duluth, 2010
Ph.D., Hydrologic Science and Engineering, Colorado School of Mines, 2017

Dissertation: Determination of subsurface water movement using self-potential measurements

Awards:
  • Department of Defense National Defense Science and Engineering Graduate (NDSEG) Fellow, 2014
  • Geological Society of America Research Award, 2014
  • Institute of International Education Rocky Mountain Center's Nancy Petry Scholarship, 2014
  • AGU Horton Research Grant, 2015
  • Outstanding Student Paper, Near-Surface Geophysics Section, Fall AGU Meeting, 2015
  • 1st Place Presentation by a Ph.D. Candidate, Geology and Geological Engineering Research Fair, Colorado School of Mines, 2016
  • Best Talk at the Symposium of the Application of Geophysics to Engineering and Environmental Problems, 2016
  • Association of Women Geoscientists (AWG) Outstanding Student Award, 2016
Position post-CSM: Postdoctoral Researcher, Institute of Earth Sciences, University of Lausanne, Switzerland

[16] - Celeste Wieting
B.S., Geology and Geological Engineering, Colorado School of Mines, 2012
M.S., Hydrologic Science and Engineering, Colorado School of Mines, 2016

M.S. Thesis: Quantifying soil hydraulic property changes with fire severity by laboratory burning

Award: Outstanding Teaching Assistant Award, Geology and Geological Engineering Department, Colorado School of Mines, 2016

Position post-CSM: Instructor, Metro State University

[15] - Aaron Bandler
B.A., Geology, Colorado College, 2011
M.S., Hydrologic Science and Engineering, Colorado School of Mines, 2016

M.S. Thesis: Geophysical constraints on critical zone architecture and subsurface hydrology of opposing montane hillslopes

Awards:
  • Colorado Ground Water Association Harlan Erker Memorial Scholarship, 2015
  • 1st Place Presentation by a Hydrology Masters Student, Geology and Geological Engineering Research Fair, Colorado School of Mines, 2016
Position post-CSM: Hydrogeologist, Neptune and Company, Inc., Lakewood, CO

[14] - Allison Johnston
B.S., Environmental Engineering, University of California San Diego, 2010
M.S., Hydrologic Science and Engineering, Colorado School of Mines, 2016

M.S. Thesis: An integrated geophysical and geochemical approach to characterizing acid mine drainage in a headwater mountain stream in Colorado, USA

Position post-CSM: Staff Hydrogeologist, Itasca Denver, Inc., Lakewood, CO

[13] - Sydney (Wilson) Foks
B.S., Geology, Western Washington University, 2011
M.S., Hydrologic Science and Engineering, Colorado School of Mines, 2015

M.S. Thesis: Groundwater-surface water exchange within montane and alpine regions of the Front Range and Rocky Mountains, Colorado

Position post-CSM: Hydrologist, U.S. Geological Survey, Boulder, CO

[12] - Rachel (Feist) Mares
B.S., Geological Engineering, Missouri University of Science and Technology, 2013
M.S., Hydrologic Science and Engineering, Colorado School of Mines, 2015

M.S. Thesis: Determining the influence of transpiration on soil moisture pathways using electrical resistivity imaging

Awards:
  • 1st Place Presentation by a Hydrology Masters Student, Geology and Geological Engineering Research Fair, Colorado School of Mines, 2014
  • 1st Place Presentation by a Hydrology Student, Conference on Earth and Energy Research, Colorado School of Mines, 2014
  • 1st Place Presentation by a Hydrology Masters Student, Geology and Geological Engineering Research Fair, Colorado School of Mines, 2015
Position post-CSM: Water Resource Engineer, Amec Foster Wheeler, Wichita, KS

[11] - Ryan Swanson
B.S., Geophysics, University of Minnesota, 2009
Ph.D., Hydrologic Science and Engineering, Colorado School of Mines, 2014

Dissertation: Geophysical Monitoring of solute transport in dual-domain environments through laboratory experiments, field-scale solute tracer tests, and numerical simulation

Award: NSF Graduate Research Fellow, 2011

Position post-CSM: Associate Scientist, HydroGeoLogic, Inc., Denver, CO

[10] - James Bethune
B.A., Geology, Carleton College, 2010
M.S., Hydrologic Science and Engineering, Colorado School of Mines, 2014

M.S. Thesis: Non-invasive flow path characterization in a mining-impacted wetland

Awards:
  • Outstanding Teaching Assistant Award, Geology and Geological Engineering Department, Colorado School of Mines, 2014
  • 1st Place Presentation by a Hydrology Masters Student, Geology and Geological Engineering Research Fair, Colorado School of Mines, 2014
Position post-CSM: Hydrogeologist, Brown and Caldwell, Olympia, WA

[9] - Rachel Urban
B.S., Civil and Environmental Engineering, Penn State University, 2010
M.S., Civil and Environmental Engineering, Penn State University, 2013 (co-advised by Patrick Reed)

M.S. Thesis: Pandora's Box: Can we distinguish groundwater transport hypotheses given observational uncertainties?

Award: NSF Graduate Research Fellow, 2011

Position post-PSU: Junior Engineer, Avatar Environmental, West Chester, PA

[8] - Pallavi Chattopadhyay
B.S., Physics, V.B.S. Purvanchal University, India, 2002
M.S., Geophysics, Banaras Hindu University, India, 2005
Ph.D., Geophysics, National Geophysical Research Institute, Osmania University, India, 2010
Postdoc, Geosciences, Penn State University, 2012-2013

Postdoctoral research: Quantifying fracture patterns in the Shale Hills Critical Zone Observatory

Position post-PSU: Assistant Professor, Department of Earth Sciences, Indian Institute of Technology Roorkee, India

[7] - Katelyn Kaproth-Gerecht
B.S., Engineering Science, Smith College, 2010
M.S., Civil and Environmental Engineering, Penn State University, 2012 (co-advised by Mike Gooseff)

M.S. Thesis: Anomalous stream temperature response to storms in a forested headwater stream in central Pennsylvania

Awards:
  • Penn State University Graduate Fellow, 2010
  • NSF Graduate Research Fellow, 2010
  • Highest Overall Oral Presentation, Conference on Earth and Energy Research, Colorado School of Mines, 2013
Position post-PSU: Staff Water Resources Engineer, Leonard Rice Engineers, Inc., Denver, CO

[6] - Julianne Hagarty
B.S., Environmental Systems Engineering, Penn State University, 2010
M.S., Geosciences, Penn State University, 2012

M.S. Thesis: Spatial variation of chemical constituents in natural waters and their relation to incidence of Buruli Ulcer in gold-mining regions of Ghana

Position post-PSU: Environmental Engineer, Arcadis, Princeton, NJ

[5] - Michael Fitzgerald
B.S., Environmental Systems Engineering, Penn State University, 2001
M.S. and Ph.D., Energy and Geoenvironmental Engineering, Penn State University, 2007, 2009
Postdoc, Applied Geology, Georg-August-Universität Göttingen, 2009
Postdoc, Geosciences, Penn State University, 2010-2011

Postdoctoral research: Electrical imaging of hyporheic exchange

Position post-PSU: Groundwater Hydrologist, National Ecological Observatory Network (NEON), Boulder, CO

[4] - Aaron Regberg
B.S., Geological Sciences, University of Michigan, 2005
Ph.D., Geosciences, Penn State University, 2011 (co-advised by Sue Brantley)

Dissertation: The effect of dissimilatory iron reduction, nitrate reduction and microbial growth on electrical conductivity

Award: AGU Outstanding Student Presentation, 2007

Position post-PSU: Research Geologist, Exxon-Mobil Research Lab, Houston, TX; then Space Scientist with NASA, Houston, TX

[3] - Brad Kuntz
B.S., Geosciences, Penn State University, 2008
M.S., Geosciences, Penn State University, 2010

M.S. Thesis: Laboratory, Field, and Modeling Analysis of Solute Transport Behavior at the Shale Hills Critical Zone Observatory

Position post-PSU: Geologist, Hess Corporation, Houston, TX

[2] - Daniel Wheaton
B.S., Geology, University of Missouri-Rolla, 2005
M.S., Geosciences, Penn State University, 2009

M.S. Thesis: Investigating the Impact of Advective and Diffusive Controls in Solute Transport on Geoelectrical Data

Position post-PSU: Geophysicist, Geotechnology Inc., St. Louis, MS

[1] - Sean Culkin
B.A., Earth and Planetary Sciences, Johns Hopkins, 2005
M.S., Geosciences, Penn State University, 2007

M.S. Thesis: Implications of Rate-Limited Mass Transfer for Aquifer Storage and Recovery Efficiency

Position post-PSU: Hydrogeologist, MACTEC Engineering and Consulting, Oakland, CA