Annual estimates of suspended-sediment concentration and load to support trend analysis on the Mississippi River and Atchafalaya River, 1980-2015

This data release contains annual estimates of suspended-sediment concentration and load for the Mississippi River, St. Francisville site and the Atchafalaya River, Melville site from 1980-2015. Annual estimates and flow-normalized estimates were generated using the Weighted Regressions on Time, Season and Discharge (WRTDS) model. Input data for the model included suspended-sediment concentrations publicly available from the U.S. Geological Survey (USGS)'s National Water Information System (U.S. Geological Survey, 2016) and daily-mean streamflow estimates from the Army Corps of Engineers (2016) and USGS. These annual concentrations and loads are used to support trend analyses and provide estimates of sediment availability to the Gulf of Mexico. See companion publication for more details (Mize, S.V., Murphy, J.C., Diehl, T.H., and Demcheck, D.K., 2018, Suspended-sediment concentrations and loads in the lower Mississippi and Atchafalaya Rivers decreased by half between 1980 and 2015, Journal of Hydrology, In review). References" U.S. Army Corp of Engineers, 2016, Water levels of Rivers and Lakes data available on the World Wide Web at RiverGages.com, accessed June 10, 2016, at URL http://rivergages.mvr.usace.army.mil U.S. Geological Survey, 2016, National Water Information System—Web interface, accessed November 8, 2017, at http://dx.doi.org/10.5066/F7P55KJN.

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
identifier USGS:5aabdaf2e4b081f61aaf00a7
metadata_type geospatial
modified 20200821
old-spatial -92.06542968750001, 29.104176683949984, -90.06591796875, 31.240985378021307
publisher U.S. Geological Survey
publisher_hierarchy Department of the Interior > U.S. Geological Survey
resource-type Dataset
source_datajson_identifier true
source_hash 263962ec1910aab8612970723341bdaf485008d9
source_schema_version 1.1
spatial {"type": "Polygon", "coordinates": [[[-92.06542968750001, 29.104176683949984], [-92.06542968750001, 31.240985378021307], [ -90.06591796875, 31.240985378021307], [ -90.06591796875, 29.104176683949984], [-92.06542968750001, 29.104176683949984]]]}
theme {geospatial}
Groups
  • AmeriGEOSS
  • National Provider
  • North America
Tags
  • amerigeo
  • amerigeoss
  • atchafalaya-river
  • biota
  • ckan
  • geo
  • geoss
  • mississippi-river
  • national
  • north-america
  • trend-analysis
  • united-states
  • usgs-5aabdaf2e4b081f61aaf00a7
isopen False
license_id notspecified
license_title License not specified
maintainer Jennifer C Murphy
maintainer_email jmurphy@usgs.gov
metadata_created 2025-11-21T21:44:53.213741
metadata_modified 2025-11-21T21:44:53.213745
notes This data release contains annual estimates of suspended-sediment concentration and load for the Mississippi River, St. Francisville site and the Atchafalaya River, Melville site from 1980-2015. Annual estimates and flow-normalized estimates were generated using the Weighted Regressions on Time, Season and Discharge (WRTDS) model. Input data for the model included suspended-sediment concentrations publicly available from the U.S. Geological Survey (USGS)'s National Water Information System (U.S. Geological Survey, 2016) and daily-mean streamflow estimates from the Army Corps of Engineers (2016) and USGS. These annual concentrations and loads are used to support trend analyses and provide estimates of sediment availability to the Gulf of Mexico. See companion publication for more details (Mize, S.V., Murphy, J.C., Diehl, T.H., and Demcheck, D.K., 2018, Suspended-sediment concentrations and loads in the lower Mississippi and Atchafalaya Rivers decreased by half between 1980 and 2015, Journal of Hydrology, In review). References" U.S. Army Corp of Engineers, 2016, Water levels of Rivers and Lakes data available on the World Wide Web at RiverGages.com, accessed June 10, 2016, at URL http://rivergages.mvr.usace.army.mil U.S. Geological Survey, 2016, National Water Information System—Web interface, accessed November 8, 2017, at http://dx.doi.org/10.5066/F7P55KJN.
num_resources 2
num_tags 13
title Annual estimates of suspended-sediment concentration and load to support trend analysis on the Mississippi River and Atchafalaya River, 1980-2015