Chesapeake Bay Nontidal Network 1985-2014: Monthly Loads
type: Dataset
description: 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 2014. 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 derived from the flow-normalized load timeseries and represents the change in load resulting from changes in sources, delays associated with storage or transport of historical inputs, and (or) implemented management actions.
issued: 2025-11-22T03:48:37.114874
modified: 20200827
spatial: Location
contact point: Organization
  fn: Douglas L. Moyer
keyword: amerigeo
keyword: amerigeoss
keyword: ckan
keyword: geo
keyword: geoss
keyword: load-analysis
keyword: national
keyword: nitrogen
keyword: north-america
keyword: nutrient-content
keyword: phosphorus
keyword: suspended-sediment
keyword: united-states
keyword: usgs-59c64b5ce4b017cf313f0ad3
keyword: water-quality
theme: {geospatial}

Original Metadata
type: Distribution
description: The metadata original format
format: XML
issued: 2022-07-07T15:31:39.490295
modified: 2025-11-22T03:48:37.105702
access URL: https://data.usgs.gov/datacatalog/metadata/USGS.59c64b5ce4b017cf313f0ad3.xml
media type: text/xml

Digital Data
type: Distribution
description: Landing page for access to the data
format: XML
issued: 2022-07-07T15:31:39.490302
modified: 2025-11-22T03:48:37.106119
access URL: https://doi.org/10.5066/F7XK8D2R
media type: application/http

US Migrating
type: Agent