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SPARROW model dataset for total suspended solids in North Carolina, including simulated stream loads

Metadata Updated: October 29, 2023

To better understand the influence of human activities and natural processes on surface-water quality, the U.S. Geological Survey (USGS) developed the SPARROW (SPAtially Referenced Regressions On Watershed attributes) (Schwarz and others, 2006; Alexander and others, 2008) model. The framework is used to relate water-quality monitoring data to sources and watershed characteristics that affect the fate and transport of constituents to receiving surface-water bodies. The core of the model consists of using a nonlinear-regression equation to describe the non-conservative transport of contaminants from point and nonpoint sources on land to rivers, lakes and estuaries through the stream and river network. In North Carolina, excessive sediment loadings have contributed to the degradation of surface-water quality, and riverine and upland sediment sources are recognized as major contributors of this degradation in rivers, lakes and estuaries. The SPARROW model was configured for North Carolina to predict sediment loads in streams and to evaluate the relative importance of sediment sources and other landscape characteristics. The model time period is 1999 to 2014 and centered at 2012. This data release includes model input (, model predictions ( that represent simulated stream load, model catchment shapefile (, and a brief methodology (Methodology_TSS.pdf). See the 'Methodology_TSS.pdf' file for model documentation.

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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Metadata Created Date June 1, 2023
Metadata Updated Date October 29, 2023

Metadata Source

Harvested from DOI EDI

Additional Metadata

Resource Type Dataset
Metadata Created Date June 1, 2023
Metadata Updated Date October 29, 2023
Publisher U.S. Geological Survey
Identifier USGS:5bb4de01e4b08583a5da4477
Data Last Modified 20200827
Category geospatial
Public Access Level public
Bureau Code 010:12
Metadata Context
Metadata Catalog ID
Schema Version
Catalog Describedby
Harvest Object Id a7943f04-e9e1-4c09-a007-76a4b2745466
Harvest Source Id 52bfcc16-6e15-478f-809a-b1bc76f1aeda
Harvest Source Title DOI EDI
Metadata Type geospatial
Old Spatial -84.418945312729,33.760518252617,-75.278320313094,36.773742030525
Publisher Hierarchy White House > U.S. Department of the Interior > U.S. Geological Survey
Source Datajson Identifier True
Source Hash 76c8e16869726084ee9bfa0fdd7ce9b823d531a35c09990ada1aa827185b7cad
Source Schema Version 1.1
Spatial {"type": "Polygon", "coordinates": -84.418945312729, 33.760518252617, -84.418945312729, 36.773742030525, -75.278320313094, 36.773742030525, -75.278320313094, 33.760518252617, -84.418945312729, 33.760518252617}

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