Jeff Pepin earned a B.S. degree in Geology from Cal Poly Pomona and both a M.S. degree in hydrology and Ph.D. in Earth & Environmental Science with a hydrology specialization from the New Mexico Institute of Mining & Technology.
Prior to joining the USGS in 2016, Jeff's graduate school research primarily focused on geothermal exploration technique improvement, water resource sustainability, crustal permeability determination, and applied electromagnetic geophysics. He began working at the USGS as a student intern and is currently a Hydrologist at the New Mexico Water Science Center in Albuquerque. Jeff specializes in geothermal systems, statistics, and electromagnetic geophysics.
2019 to present: Hydrologist, U.S. Geological Survey, New Mexico Water Science Center, Albuquerque, New Mexico
2016 to 2019: Student Trainee Hydrology, U.S. Geological Survey, New Mexico Water Science Center, Albuquerque, New Mexico
2012 to 2019: Research & Teaching Assistant, New Mexico Institute of Mining & Technology, Socorro, New Mexico
2012 to 2012: Well-Logging Specialist, New Mex
Education and Certifications
Ph.D. Earth & Environmental Science with specialization in Hydrology, Earth & Environmental Science Department, New Mexico Institute of Mining & Technology, 2019
M.S. Hydrology, Earth &am
Science and Products
Science and Products
Pre-USGS PublicationsPepin J (2018) New Approaches to Geothermal Resource Exploration and Characterization. Doctoral Dissertation, New Mexico Institute of Mining & Technology, 186 p.Pepin J, Person M, Phillips F, Kelley S, Timmons S, Owens L, Witcher J, Gable C (2017) Deep Fluid Circulation within Crystalline Basement Rocks and the Role of Hydrologic Windows in the Formation of the Truth or Consequences, New Mexico Low-Temperature Geothermal System. In Crustal Permeability, John Wiley & Sons, Ltd., United Kingdom, 560 p.Zhang Y, Edel S, Pepin J, Person M, Broadhead R, Ortiz JP, Bilek S, Mozley P, Evans J (2016) Exploring the Potential Linkages Between Oil-Field Brine Reinjection, Crystalline Basement Permeability, and Triggered Seismicity for the Dagger Draw Oil Field, Southeastern New Mexico, USA Using Hydrologic Modeling. Geofluids, 16, 971-987.Kelley S, Person M, Kelley R, Pepin J (2016) Low-temperature geothermal resources in the Acoma Basin and Lucero Uplift, eastern Cibola and western Valencia counties, New Mexico. In The Geology of the Belen Area, New Mexico Geological Society, Guidebook, 67th Field Conference, Socorro, New Mexico, 263-274.Pepin J (2015) Sustainability Assessment of the Truth or Consequences, New Mexico Geothermal Resource. M.S. Thesis, New Mexico Institute of Mining & Technology, 87 p.Bielicki J, Blackwell D, Harp D, Karra S, Kelley R, Kelley S, Middleton R, Pepin J, Person M, Sutula G, Witcher J (2015) Hydrogeologic Windows: Regional Signature Detection for Blind and Traditional Geothermal Play Fairways. Los Alamos National Laboratory Final Report LA-UR-15-28360, 94 pPerson M, Kelley S, Kelley R, Karra S, Harp D, Witcher J, Bielicki J, Sutula G, Middleton R, Pepin J (2015) Hydrogeologic Windows: Detection of Blind and Traditional Geothermal Play Fairways in Southwester New Mexico Using Conservative Element Concentrations and Advective-Diffusive Solute Transport. Geothermal Resource Council Transactions, 39, 751-759.Pepin J, Person M, Phillips F, Kelley S, Timmons S, Owens L, Witcher J, Gable C (2015) Deep Fluid Circulation within Crystalline Basement Rocks and the Role of Hydrologic Windows in the Formation of the Truth or Consequences, New Mexico Low-Temperature Geothermal System. Geofluids, 15, 139-160.Person M, Phillips F, Kelley S, Timmons S, Pepin J, Blom L, Haar K, Murphy M (2013) Assessment of the Sustainability of Geothermal Development Within the Truth or Consequences Hot Springs District, New Mexico. New Mexico Bureau of Geology and Mineral Resources Open-File Report 551, 65 p.Pepin J (2011) Geology of Hawk Canyon, Anza-Borrego Desert State Park, California. B.S. Thesis, California State Polytechnic University Pomona, 59 p.