Mason Stahl


Associate Professor 

Department of Geosciences 

Union College

I am an Associate Professor in the Environmental Science, Policy and Engineering Program and the Geosciences Department at Union College.

My research spans the fields of hydrogeology, geochemistry, data analytics, and water resources.  I study how perturbations to the environment influence the flows of water, the cycling of elements, and the quality of our water resources.  Much of my research falls into two key areas: (1) characterizing soil moisture and groundwater recharge processes; (2) elemental cycling in groundwater and surface water systems with a strong focus on the cycling of arsenic.  In my work on arsenic,  I aim to improve our understanding of the hydrologic and biogeochemical factors that result in the mobilization of naturally occurring arsenic from sediments into groundwater, which is a problem that threatens the health of millions of people around the world.  

One of the primary goals of my research is to help answer questions about how the quantity and quality of groundwater and surface water will change in response to natural and anthropogenic changes to the environment and what this means for the health of people and the environment.