Chemical and isotopic data for a study of seasonality of nitrate sources and isotopic composition in the Upper Illinois River, 2004-2008

This data release contains chemical and isotopic data used in an investigation of nitrate sources and transport in the Upper Illinois River basin. Samples (total = 445) include river water from the Upper Illinois River and its major tributaries plus urban wastewater and agricultural groundwater. Data include concentrations of nitrate, chloride, and sulfate; isotope ratios of N and O in nitrate; and isotope ratios of H and O in water.

Categories: Data; Tags: Environmental Health, Illinois, USGS Science Data Catalog (SDC), Water Quality, Water Resources, All tags... chloride concentration, hydrogen isotope ratio, nitrate concentration, nitrogen isotope ratio, oxygen isotope ratio, stream flow, sulfate concentration, surface water quality, Fewer tags