NIRAMS - Nitrogen Risk Assessment Model for Scotland

GIS-based model to calculate losses of N from diffuse pollution. Calculates weekly flows and N fluxes and concentrations at the catchment scale. Developed to apply to any catchment (pre-defined or user-defined) in Scotland. Estimates of annual residual N (by crop) are leached to surface and groundwaters by hydrological flows and routed to the stream system.