Using a multi-method approach to quantify the spatial extent and hydrologic and water quality effects of subsurface tile drainage at local and regional scales

Keith E Schilling, Iowa DNR-Geological Survey, Iowa City, IA, United States, Christopher S Jones, University of Leeds, Leeds, United Kingdom, Philip W Gassman, Iowa State University, Ames, IA, United States and Antonio Arenas Amado, IIHR—Hydroscience and Engineering, Iowa City, IA, United States