Runoff Risk Decision Support is a real-time forecasting tool that gives farmers guidance about when to apply fertilizers to their fields.

Fertilizer application generally occurs during the winter and spring, which are the riskiest times of year for runoff from rain and snowmelt. In fact, a significant percentage of annual nutrient losses can occur from only a few large runoff events per year. The information provided by Runoff Risk Decision Support helps farmers ensure that fertilizer and manure stay on the fields, instead of washing off into waterways. Relying on National Weather Service modeling, on-farm research data, and multi-partner collaboration, this tool offers a science-based approach to nutrient application timing.