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Chesapeake Bay River Input Monitoring Network 1985-2018: WRTDS input data


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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). The load results represent the total mass of nitrogen, phosphorus, and suspended sediment that was exported from each of the RIM watersheds.


Attached Files

Click on title to download individual files attached to this item.
“RIM station description and initial WRTDS model parameters”
37.61 KB application/zip
“Discrete observed water-quality data and WRTDS estimates of discrete observation”
3.03 MB application/zip
“Observed daily discharge”
9.94 MB application/zip
“WRTDS input parameter values for determination of trend”
8.36 KB text/csv


These datasets contain the required discharge and water-quality input datasets and model variables to run the WRTDS models.

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