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Nitrogen, phosphorus, and suspended-sediment loads and trends measured at the Chesapeake Bay Nontidal Network stations: Water years 1985-2018

Dates

Publication Date
Start Date
1984-10-01
End Date
2018-09-30

Citation

Moyer, D.L. and Langland, M.J., 2020, Nitrogen, phosphorus, and suspended-sediment loads and trends measured at the Chesapeake Bay Nontidal Network stations: Water years 1985-2018: U.S. Geological Survey data release, https://doi.org/10.5066/P931M7FT.

Summary

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 Nontidal Network (NTN) 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 NTN watersheds. To determine the trend in loads, the annual load results are flow normalized to integrate out the year-to-year variability in river discharge. The trend in [...]

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Attached Files

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R-3.6.0-win.exe
“Source Code for R”
79.86 MB
EGRET_2.6.0.tar.gz
“Source Code for EGRET (contains WRTDS)”
3.51 MB
EGRETci_1.0.2.tar.gz
“Source Code for EGRETci (for computing trends)”
146.55 KB

Purpose

The purpose of this data release is to provide datasets for 1985-2018 (1) Annual Loads, (2) Monthly Loads, (3) Long- (~1985-2018) and Short- (2009-2018) Term Trends, and (4) 5-Year (2014-2018) and 10-Year (2009-2018) Average Yields. Additionally, essential WRTDS Input and Output files are provided.

Additional Information

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DOI https://www.sciencebase.gov/vocab/category/item/identifier doi:10.5066/P931M7FT

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