Hydrologist at One-Water Hydrologic, United States
Randall Hanson is a distinguished hydrologist with over four decades of experience in hydrologic research, software development, and education. As the President of One-Water Hydrologic, LLC and a former research hydrologist at the U.S. Geological Survey (USGS), he has made significant contributions to regional and global water resource studies. He played a key role in developing advanced hydrologic modeling tools such as MODFLOW-OWHM and One-Water, widely used for sustainable water management. His expertise spans climate change analysis, groundwater modeling, and transboundary water resource management. Hanson has also contributed to education through international workshops and training courses, enhancing hydrologic modeling capabilities worldwide. With multiple patents and an extensive list of peer-reviewed publications, his research has had a profound impact on both scientific advancements and practical applications. His leadership, technical innovations, and commitment to education make him a strong contender for the Best Researcher Award.
Professional Profile
Education
Randall Hanson has a strong educational background in hydrology, geology, and mathematics, providing a solid foundation for his extensive research career. He earned a Master of Science in Hydrology from the University of Arizona in 1988, where he specialized in aquifer-system compaction and groundwater flow. Prior to that, he pursued graduate studies in geology with a focus on hydrology at the University of Illinois in 1978. His undergraduate education includes dual Bachelor of Science degrees in Mathematics (Geometry) and Geology (Stratigraphy) from the New Mexico Institute of Mining and Technology in 1976. Hanson’s interdisciplinary academic training has enabled him to develop advanced hydrologic models and methodologies, contributing significantly to climate change studies, regional water resource management, and groundwater sustainability. His strong educational foundation, combined with decades of applied research and teaching, has positioned him as a leading expert in the field of hydrology.
Professional Experience
Randall Hanson has an extensive professional background in hydrology, spanning over four decades in both government and private sectors. He currently serves as the President and Research Hydrologist at One-Water Hydrologic, LLC, where he develops and teaches advanced hydrologic modeling tools for sustainable water resource management. Prior to this, he spent nearly 38 years at the U.S. Geological Survey (USGS), holding key research positions across multiple locations, including Albuquerque, Tucson, and San Diego. His expertise includes regional groundwater modeling, climate change impact analysis, and the development of innovative hydrologic software such as MODFLOW-OWHM and One-Water. Hanson has led critical studies on water sustainability, transboundary aquifers, and conjunctive water use, contributing to major projects across the U.S. and internationally. His professional experience also includes mentoring scientists, instructing international training courses, and advising on water policy, cementing his reputation as a leading expert in hydrologic research and education.
Research Interest
Randall Hanson’s research interests focus on hydrologic modeling, climate change impacts on water resources, and regional groundwater flow systems. He specializes in developing and applying integrated hydrologic models, such as MODFLOW-OWHM and One-Water, to assess water sustainability, conjunctive water use, and agricultural water management. His work explores the interaction between surface water and groundwater, land subsidence, and the effects of climate variability on water availability. Hanson has also contributed to transboundary water resource management, working on projects that analyze groundwater systems across international borders. His research extends to hydroclimatology, where he has developed new methods for linking global climate models with regional water resource assessments. In addition, he is committed to advancing the education and practical application of hydrologic modeling through international training programs. His research aims to improve water management strategies and ensure the sustainable use of water resources in an era of changing climate conditions.
Award and Honor
Randall Hanson has received numerous awards and honors in recognition of his significant contributions to hydrologic research and water resource management. His pioneering work in developing advanced hydrologic modeling tools, such as MODFLOW-OWHM and One-Water, has earned him widespread acclaim in the scientific community. Throughout his career at the U.S. Geological Survey (USGS) and as President of One-Water Hydrologic, LLC, he has been recognized for his leadership in regional groundwater studies, climate change impact assessments, and transboundary aquifer management. His contributions to scientific advancements have led to multiple patents, including innovations in well flowmeter and downhole sampling technologies. Hanson’s dedication to education and training has also been acknowledged through invitations to teach and present at prestigious institutions and international conferences. His influence in the field of hydrology continues to shape water sustainability efforts worldwide, making him a distinguished figure in water resource research and management.
Research Skill
Randall Hanson possesses exceptional research skills in hydrologic modeling, groundwater flow analysis, and climate change impact assessments. His expertise lies in developing and applying advanced hydrologic models, such as MODFLOW-OWHM and One-Water, to study regional water resource management, conjunctive water use, and land subsidence. He has a strong background in integrating hydrogeologic frameworks, geochemistry, and wellbore hydraulics into comprehensive water resource studies. Hanson is also skilled in linking global climate models with regional hydrologic assessments, enabling more accurate predictions of water availability under changing climate conditions. His ability to synthesize large datasets and develop new methodologies has contributed to significant advancements in hydrology. Additionally, he has excellent technical writing and communication skills, demonstrated through his extensive list of peer-reviewed publications, patents, and international training courses. His research skills have positioned him as a leading expert in the field, driving innovations in sustainable water resource management.
Conclusion
Randall Hanson is a strong candidate for the Best Researcher Award due to his significant contributions to hydrology, software development, and education. His leadership in advancing hydrologic modeling and climate adaptation tools has had a lasting impact on the field. While there are opportunities to enhance his interdisciplinary reach and policy influence, his credentials and achievements make him highly deserving of recognition.
Publications Top Noted
-
Rentería-Villalobos, M., & Hanson, R. T. (2025). Capturing wetness for sustainability from climate variability and change in the Rio Conchos, Chihuahua, Mexico. Journal of Hydrology: Regional Studies.
-
Rentería-Villalobos, M., Hanson, R. T., & Eastoe, C. J. (2022). Evaluation of climate variability on sustainability for transboundary water supply in Chihuahua, Mexico. Journal of Hydrology: Regional Studies.
-
Mendieta-Mendoza, A., Hanson, R. T., & Rentería-Villalobos, M. (2021). Potential adverse impacts on vulnerability and availability of groundwater from climate-change and land use. Journal of Hydrology.
