Mississippi River watershed nutrient loading 1967 to 2016

<p>Archived water quality data collected between 1901 and 2019 were used to reconstruct annual averages of various forms of C, N, P and silicate concentrations and alkalinity in the lower Mississippi River. The data in this spreadsheet is by the United States Geological Survey which no longer posts the data on their website. They were used in the data analysis for this paper.</p>