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  3. Nitrogen, phosphorus, and suspended-sediment loads and trends measured at the Chesapeake Bay Nontidal Network stations: Water years 1985-2020 (ver. 2.0, January 2023)
  4. Chesapeake Bay Nontidal Network 1985-2020: Average annual yields (ver. 2.0, January 2023)

Chesapeake Bay Nontidal Network 1985-2020: Average annual yields (ver. 2.0, January 2023)

Dates

Start Date
1984-10-01
End Date
2020-09-30

Citation

Mason, C.A., Colgin, J.E., and Moyer, D.L., 2023, Nitrogen, phosphorus, and suspended-sediment loads and trends measured at the Chesapeake Bay Nontidal Network stations: Water years 1985-2020 (ver. 2.0, January 2023): U.S. Geological Survey data release, https://doi.org/10.5066/P96H2BDO.

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 2020. 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). Yields (representing the mass of constituent transported from a unit area of a given watershed) are used to compare the export loads from one basin to another. Yield results are obtained by dividing the annual load (pounds) of a given constituent by the respective watershed area (acres) from which [...]

Contacts

Point of Contact :
Christopher A Mason, Virginia and West Virginia Water Science Center
Originator :
Christopher A Mason, James E Colgin, Douglas L Moyer
Metadata Contact :
Christopher A Mason
Publisher :
U.S. Geological Survey
USGS Mission Area :
Water Resources
SDC Data Owner :
Virginia and West Virginia Water Science Center
Distributor :
U.S. Geological Survey - ScienceBase

Attached Files

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NTN_2011-2020_Yields_ver.2.0.xml
Original FGDC Metadata
View 		11.74 KB application/fgdc+xml
NTN_2020_YieldsTable_ver.2.0.csv 69.74 KB text/csv
NTN2020_ver.2.0_Revision_Notes.txt 3.58 KB text/plain

Purpose

The purpose of this dataset is to communicate the average annual per-acre loads of nitrogen, phosphorus, and suspended sediment being transported by the nontidal portion of the major rivers in the bay watershed for two possible periods 2011-2020 and 2016-2020. The loads have been normalized by respective watershed drainage area to generate per-acre loads (or yields).

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