RZ-TRADEOFF Water and Air Quality Model is a riparian zone model aiming to predict key riparian functions (NO3- and phosphate [PO43-] concentration and removal in subsurface flow, total phosphorus [TP] removal in overland flow, nitrous oxide [N2O], methane [CH4], and carbon dioxide [CO2] emissions, water table) based on landscape hydrogeomorphic characteristics, weather, and land cover/land use. USDA-NIFA Award # 2015-67019-23586