Constructed wetlands to reduce agricultural chemical transport to water resources

This project was part of a larger five-year, multi-phase research and demonstration effort to study water quality and agricultural drainage wells (ADWs). The goal was to evaluate the use of constructed wetlands for treatment of subsurface drainage prior to release to groundwater through ADWs and to develop design and operation criteria for these treatment wetlands. Principal Investigator: W. G. Crumpton Botany Iowa State University Co-investigators: J. L. Baker Agricultural and Biosystems Engi­ neering S.W. Fisher B. Hecht J. Z. Stenback Botany C. Zmolek S. W. Melvin Agricultural and Biosystems Engi­ neering Iowa State University D. W. Lemke (project coordinator) Iowa Department of Agriculture and Land Stewardship Division of Soil Conser­