Assess the student's ability to apply watershed-scale hydrologic and water-quality modeling (e.g., SWAT, HSPF, SWMM) to evaluate how agricultural land-use changes and best management practices (BMPs) affect sediment and nutrient (N, P) export; tasks include selecting model structure and key parameters, designing scenario simulations for land-use conversion and BMP implementation, conducting calibration, validation and sensitivity/uncertainty analysis, interpreting loads, yields and concentration time-series, and formulating evidence-based management recommendations.