Description: This presentation highlights a county-scale workflow linking GIS-based nitrate leaching estimates with groundwater flow and transport modeling. We show how Iowa counties and watersheds can quantify nitrate load reductions needed to meet the 10 mg/L drinking-water standard by testing alternative practices such as cover-crops and perennials.

Author: Alexander Reimers

Author Bio: Alex Reimers is a Hydrogeologist with Barr Engineering. He holds a Bachelors degree in Geology from North Dakota State University and a Masters degree in Hydrogeology from Clemson University. His expertise lies with numerical groundwater modeling in municipal water supply, mine dewatering applications, and contaminant fate and transport.