William G Crumpton

William G Crumpton is a University Professor at Iowa State University specializing in wetland processes and agricultural hydrology. His research focuses on nutrient transformation dynamics, contaminant fate, and wetland restoration in agricultural landscapes. He has pioneered performance forecast models for wetland siting and design to mitigate nitrogen pollution, contributing to one of the nation's largest datasets on agricultural wetland effectiveness.

• Education:
  • B.S., University of West Florida, 1975
  • M.S., University of West Florida, 1979
  • Ph.D., Michigan State University, 1980

Research interests include wetland hydrology, watershed management, and the roles of wetlands in mitigating agricultural impacts. His work highlights wetlands' potential to reduce nitrate loads through strategic design and placement, particularly in tile-drained regions like Iowa's Des Moines Lobe. Recent studies address microplastic pollution, climate-driven precipitation effects on nitrogen loading, and microbial-based nitrate reduction strategies.

Publications emphasize modeling approaches for wetland performance, nitrate dynamics in tile-drained soils, and ecosystem services from edge-of-field practices. Collaborative projects include the Iowa Conservation Reserve Enhancement Program (CREP) wetland monitoring, demonstrating wetlands' capacity to intercept 40-60% of nitrogen loads.

Grant-funded work focuses on integrating drainage improvements with wetland restoration, cover crop impacts on nitrate loss, and emerging technologies like microbial amendments. His interdisciplinary approach bridges hydrology, ecology, and policy to advance sustainable agricultural practices.