This report summarizes the results of an analysis of nitrate concentrations in the South Platte River between Chatfield Dam and the Burlington Ditch headgate (Upper South Platte Segments 6c and 14). The analysis is applicable to present and future conditions. Because the context for the analysis is a TMDL for nitrate, all influences on loads and concentrations of nitrate are taken into account as fully as possible on the basis of monitoring data,...