The Spatial Aquatic Model (SAM), under development by the U.S. EPA’s Office of Pesticide Programs, generates daily estimates of pesticide concentrations in U.S. streams, rivers, lakes, and reservoirs based on spatial inputs of soil, land cover, weather, hydrology, and crop conditions/practices. Following on recommendations of the U.S. EPA FIFRA Scientific Advisory Panel, EPA is expanding SAM to include sediment transport, irrigation, and a broader diversity of agricultural crops. This presentation includes an evaluation of model results for pesticides with a range in mobility and multiple uses. Plans for expansion of the model to cover the contiguous United States will be discussed.

Expanding the capacity and scope of the spatial aquatic model (SAM) for pesticides

254th National Meeting (2017)

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