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Chesapeake Bay River Input Monitoring Network 1985-2019: Monthly loads


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Moyer, D.L. and Blomquist, J.D., 2020, Nitrogen, phosphorus, and suspended-sediment loads and trends measured at the Chesapeake Bay River Input Monitoring stations: Water years 1985-2019: 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 2019. 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). The load results represent the total mass of nitrogen, phosphorus, and suspended sediment that was exported from each of the RIM watersheds.


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“RIM Monthly Loads”
2 MB text/csv


The purpose of this dataset is to communicate the monthly loads of nitrogen, phosphorus, and suspended-sediment being generated across the nontidal portion of the bay watershed.

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