This study evaluated the effectiveness of various vegetation types in filtering non-point source pollution from agricultural field runoff in several locations across Kansas. Initial results show a steep decline in the concentration of pollutants as surface runoff flowed through the buffers, however, there was little difference between shrub and prairie grass cover types. Comparisons are currently being made between planted buffers and native, mature woodlands.

This study is part of a comprehensive effort in Kansas, including surface water sampling, several large-scale projects documenting stream bank stability and sediment loading, and riparian habitat characteristics. In combination, these projects will provide a more complete picture of the benefits of riparian areas for providing stream structure, habitat, and water quality improvement.