Date of Award


Degree Name

Master of Science



First Advisor

Dr. Alan E. Kehew

Access Setting

Masters Thesis-Open Access


A hydrogeochemical investigation of the Schoolcraft Aquifer, an unconfined, glacial-drift aquifer located in southwest Michigan, was undertaken to focus on three topics: (1) the geochemical definition of recharge and discharge zones both vertically and laterally along projected flow paths, (2) the description of the carbonate and redox chemical systems, and (3) groundwater degradation associated with excessive nitrate, ammonium, and chloride concentrations.

The results of the study were inconclusive in defining recharge and discharge zones; however, iron and alkalinity concentrations were identified as possible indices for recharge and discharge conditions. The carbonate analysis indicated that the aquifer is saturated with respect to calcite and undersaturated with respect to dolomite. Redox chemical analysis indicates that the system is marginally reducing. Degradation of the aquifer with respect to nitrate and chloride is extensive and is attributable to agricultural fertilizers and road salt, respectively.