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

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

Point of Contact :
Douglas L Moyer
Originator :
Douglas L. Moyer, Michael J. Langland, Joel D. Blomquist, Guoxiang Yang
Metadata Contact :
Douglas L Moyer
Publisher :
U.S. Geological Survey
Distributor :
U.S. Geological Survey - ScienceBase
USGS Mission Area :
Ecosystems
SDC Data Owner :
Virginia and West Virginia Water Science Center

Attached Files

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NTN_1985-2016_Landing.xml
Original FGDC Metadata
View 		12.21 KB application/fgdc+xml
R-3.4.0-win.exe
“Source Code for R-3.4.0” 		74.48 MB application/x-msdownload
EGRET_2.6.0.tar.gz
“Source Code for EGRET (contains WRTDS)” 		3.51 MB application/x-gzip
EGRETci_1.0.2.tar.gz
“Source Code for EGRETci (for computing trends)” 		146.55 KB application/x-gzip
Static Load and Trend Maps_1985-2016.zip
“Maps of Load and Trend Results” 		47.09 MB application/zip
NTN Load and Trend Summary 2016_Combined.pdf
“Summary of Load and Trend Results - 1985-2016” 		10.44 MB application/pdf

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.

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  • USGS Chesapeake Bay
  • USGS Data Release Products

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

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