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Jeff Pepin, PhD

Jeff is a Hydrologist at the Colorado Water Science Center.

He began his career at the USGS New Mexico Water Science Center in Albuquerque in 2016 where he worked until his move to the Colorado Water Science Center in 2021. His research focuses on water resource evaluation along with geothermal resource characterization by using hydrothermal modeling, geostatistics, electromagnetic geophysics, and machine learning. Additionally, he specializes in using heat as a groundwater tracer to evaluate groundwater/surface-water interactions. Jeff currently co-leads regional- and national-scale thermal energy storage assessments within the United States as part of the USGS Geothermal Resources Investigations Project. He is also a team member of the USGS Next Generation Water Observing System (NGWOS) Upper Colorado and Gunnison River Basin project.