Dr. Nirjhar Shah is an expert on integrated surface and groundwater modeling. His work has included improvement in modeling conceptualization and statistical analysis of wetland hydroperiod and vadose zone soil moisture dynamics. His area of professional interest has centered on developing custom numerical and GIS-based tools  and models for exploration of site-specific surface and groundwater flow characteristic for use in floodplain management, water resource development projects, minimum flows and levels, and site specific water budget analysis under varying climatic conditions.