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Nitrogen, phosphorus, and suspended-sediment loads and trends measured at the Chesapeake Bay Nontidal Network stations: Water years 1985-2016

Dates

Publication Date
Start Date
1985-10-01
End Date
2016-09-30

Citation

Moyer, D.L., Langland, M.J., Blomquist, J.D., and Yang, Guoxiang, 2017, Nitrogen, phosphorus, and suspended-sediment loads and trends measured at the Chesapeake Bay Nontidal Network stations: Water years 1985-2016, U.S. Geological Survey data release, https://doi.org/10.5066/F7RR1X68.

Summary

Nitrogen, phosphorus, and suspended-sediment loads, and changes in loads, in 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 2016. 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 load is [...]

Child Items (6)

Contacts

Attached Files

Click on title to download individual files attached to this item.

R-3.4.0-win.exe
“Source Code for R-3.4.0”
74.48 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
NTN_1985-2016_Landing.xml
Original FGDC Metadata

View
12.07 KB
Static Load and Trend Maps_1985-2016.zip
“Maps of Load and Trend Results”
47.09 MB
NTN Load and Trend Summary 2016_Combined.pdf
“Summary of Load and Trend Results - 1985-2016”
10.44 MB

Purpose

The purpose of this data release is to provide datasets for 1985-2016 (1) Annual Loads, (2) Monthly Loads, (3) Long- (1985-2016) and Short- (2007-2016) Term Trends, and (4) Average Yields (2007-2016). Additionally, essential WRTDS Input and Output files are provided.

Additional Information

Identifiers

Type Scheme Key
DOI https://www.sciencebase.gov/vocab/category/item/identifier doi:10.5066/F7RR1X68

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