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Chesapeake Bay Nontidal Network 1985-2023: Annual loads

Metadata Updated: September 14, 2025

Nitrogen, phosphorus, and suspended-sediment loads, and changes in loads, in major rivers across the Chesapeake Bay watershed were calculated using monitoring data from the Chesapeake Bay Nontidal Network (NTN) stations for the period 1985 through 2023. 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). Load results represent the total mass of nitrogen, phosphorus, and suspended sediment that was exported from each of the NTN watersheds by year. The file containing annual actual and flow-normalized loads for all applicable NTN monitoring stations is provided in the "Attached Files" section.

Access & Use Information

Public: This dataset is intended for public access and use. License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

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Dates

Metadata Created Date September 14, 2025
Metadata Updated Date September 14, 2025

Metadata Source

Harvested from DOI USGS DCAT-US

Additional Metadata

Resource Type Dataset
Metadata Created Date September 14, 2025
Metadata Updated Date September 14, 2025
Publisher U.S. Geological Survey
Maintainer
Identifier http://datainventory.doi.gov/id/dataset/usgs-67af58e6d34e5020fb91f071
Data Last Modified 2025-03-13T00:00:00Z
Category geospatial
Public Access Level public
Bureau Code 010:12
Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
Metadata Catalog ID https://ddi.doi.gov/usgs-data.json
Schema Version https://project-open-data.cio.gov/v1.1/schema
Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
Harvest Object Id 1a80c8aa-7af4-4ae6-b737-788ba327edcd
Harvest Source Id 2b80d118-ab3a-48ba-bd93-996bbacefac2
Harvest Source Title DOI USGS DCAT-US
Metadata Type geospatial
Old Spatial -79.167480469182, 36.208470061656, -74.904785156852, 42.714410712674
Source Datajson Identifier True
Source Hash 085e774f8fd7c5abeb272c4eba7a8f16d0f14abf5aaf137dcb4aad7da57fb55d
Source Schema Version 1.1
Spatial {"type": "Polygon", "coordinates": -79.167480469182, 36.208470061656, -79.167480469182, 42.714410712674, -74.904785156852, 42.714410712674, -74.904785156852, 36.208470061656, -79.167480469182, 36.208470061656}

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