Nutrient balances, river loads, and a counterfactual analysis to determine drivers of Mississippi River nitrogen and phosphorus loads between 1975 and 2017

This dataset consists of input and output datasets for estimating trends in river loads using the Weighted Regressions on Time Season and Discharge (WRTDS) model. The input datasets includes a discharge datafile and concentration datafiles for 6 water quality constituents: Total Phosphorus, Total Nitrogen, Nitrate plus Nitrite, Ammonium, Orthophosphate and Suspended Sediment. The period of record for the water quality data is from 1975 to 2017. The concentration and discharge data are for one site, the Mississippi River Outflow site, which is based on concentration data from USGS site 07373420, Mississippi River near St. Francisville, LA, and the discharge data are the sum of US Army Corps of Engineers Sites 01100 (Tarbert Landing) and 02600 (Old River Outflow) . Output dataset has the annual WRTDS estimates for time period 1975 to 2017 for all six constituents.

Data and Resources

Field Value
accessLevel public
bureauCode {010:12}
catalog_@context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
catalog_conformsTo https://project-open-data.cio.gov/v1.1/schema
catalog_describedBy https://project-open-data.cio.gov/v1.1/schema/catalog.json
datagov_dedupe_retained 20220722134805
identifier USGS:5f6b9bde82ce38aaa2455536
metadata_type geospatial
modified 20211115
old-spatial {"type": "Polygon", "coordinates": [[[-180.0000, -90.0000], [-180.0000, 90.0000], [ 180.0000, 90.0000], [ 180.0000, -90.0000], [-180.0000, -90.0000]]]}
publisher U.S. Geological Survey
publisher_hierarchy Department of the Interior > U.S. Geological Survey
resource-type Dataset
source_datajson_identifier true
source_hash 5d6c663fba47297475c5c0127ca70504f28ac20b
source_schema_version 1.1
spatial {"type": "Polygon", "coordinates": [[[-180.0000, -90.0000], [-180.0000, 90.0000], [ 180.0000, 90.0000], [ 180.0000, -90.0000], [-180.0000, -90.0000]]]}
theme {geospatial}
Groups
  • AmeriGEOSS
  • National Provider
  • North America
Tags
  • amerigeo
  • amerigeoss
  • ckan
  • eutrophication
  • geo
  • geoss
  • legacy-nutrients
  • national
  • national-water-quality-program
  • nitrogen
  • north-america
  • phosphorus
  • surface-water-quality
  • united-states
  • usgs-5f6b9bde82ce38aaa2455536
  • water-quality-trends
  • weighted-regressions-on-time-season-and-discharge-wrtds
isopen False
license_id notspecified
license_title License not specified
maintainer Sarah M Stackpoole
maintainer_email sstackpoole@usgs.gov
metadata_created 2025-11-21T10:37:57.540009
metadata_modified 2025-11-21T10:37:57.540012
notes This dataset consists of input and output datasets for estimating trends in river loads using the Weighted Regressions on Time Season and Discharge (WRTDS) model. The input datasets includes a discharge datafile and concentration datafiles for 6 water quality constituents: Total Phosphorus, Total Nitrogen, Nitrate plus Nitrite, Ammonium, Orthophosphate and Suspended Sediment. The period of record for the water quality data is from 1975 to 2017. The concentration and discharge data are for one site, the Mississippi River Outflow site, which is based on concentration data from USGS site 07373420, Mississippi River near St. Francisville, LA, and the discharge data are the sum of US Army Corps of Engineers Sites 01100 (Tarbert Landing) and 02600 (Old River Outflow) . Output dataset has the annual WRTDS estimates for time period 1975 to 2017 for all six constituents.
num_resources 2
num_tags 17
title Nutrient balances, river loads, and a counterfactual analysis to determine drivers of Mississippi River nitrogen and phosphorus loads between 1975 and 2017