Assess graduate students' understanding of how hydrological processes — including surface runoff, subsurface and tile drainage, groundwater–surface water interactions, flow connectivity, storage dynamics, and event vs. baseflow conditions — control the transport, transformation (e.g., denitrification, sorption, assimilation), and retention of key nutrients (nitrogen and phosphorus) in agricultural catchments; scope includes influences of soils, geomorphology, land use, riparian zones and wetlands, temporal variability, and implications for monitoring, modeling, and mitigation design.