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Chesapeake Bay River Input Monitoring Network 1985-2018: Average annual yields


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Moyer, D.L. and Blomquist, J.D., 2019, Nitrogen, phosphorus, and suspended-sediment loads and trends measured at the Chesapeake Bay River Input Monitoring stations: Water years 1985-2018: U.S. Geological Survey data release,


Nitrogen, phosphorus, and suspended-sediment loads, and changes in loads, in major rivers across the Chesapeake Bay watershed have been calculated using monitoring data from the Chesapeake Bay River Input Monitoring Network (RIM) stations for the period 1985 through 2018. Nutrient and suspended-sediment loads and changes in loads were determined by applying a weighted regression approach called WRTDS (Weighted Regression on Time, Discharge, and Season). Yields (represents the mass of constituent transported from a unit area of a given watershed) are used to compare the export loads from one basin to another. Yield results are obtained by dividing the annual load (pounds) of a given constituent by the respective watershed area (acres) [...]


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“RIM 5yr and 10yr Average Yields ”
9.15 KB text/csv


The purpose of this data set is to communicate the average annual loads of nitrogen, phosphorus, and suspended-sediment being generated across the nontidal portion of the major rivers in the bay watershed for tow possible periods 2009-2018 and 2014-2018. The loads have been normalized by respective watershed drainage area to generate per acre loads (that is yields).

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