Test students' ability to apply watershed-scale best management practice (BMP) design principles to reduce nitrogen and phosphorus runoff from agricultural catchments and to evaluate BMP effectiveness using field monitoring, water-quality modeling, load-reduction estimates, uncertainty analysis, and cost-effectiveness. Scope includes selecting and siting BMPs (e.g., riparian buffers, cover crops, wetlands, controlled drainage), scaling across subcatchments, designing monitoring programs, interpreting model outputs, and making evidence-based adaptive management recommendations.