Geological physics, nonlinear processes and nonlinear data analysis, stability and sustainability. Geological physics interests include planetary sciences; geological fluid dynamics including geothermal, epithermal, and volcanic environments; solid-state geophysics and mineral thermodynamics; shock wave physics; river hydraulics and river environments; theoretical modeling of processes with supercomputers.

Research includes, Aquifer characterization and groundwater flow; Groundwater/surface-water interactions; Groundwater resource investigations; Hydraulic properties of glacial-drift aquifers and confining units; Natural quality of groundwater; Hydrostratigraphy

Main research interests focus on the microbial ecology and molecular microbiology aspects of water and wastewater treatment processes. This is based on the facts that the microorganisms are the key catalyst for wastewater treatment, and the primary causative agents for the failure of water purification systems and the occurrences of infectious diseases.

Current research includes the effects of climate change on hydrologic systems in urban and agricultural areas of the Midwest, and the Great Lakes region. Is interested in statistical downscaling of global climate modeling outputs, extreme rainfall, extreme floods and droughts under the future climate scenarios. Other interests include the past and future trends in water contaminants, riverine nutrient load estimation methods, as well as real-time water quantity and quality forecasting in the streams and rivers in the Midwest and the Great Lakes region.