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A Century of Water Quality Sampling in Rivers of the United States

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Type:	Resource
Storage:	The size of this resource is 269.9 KB
Created:	Jul 09, 2026 at 7:50 p.m. (UTC)
Last updated:	Jul 10, 2026 at 2:12 p.m. (UTC)
Citation:	See how to cite this resource
Content types:	Geographic Feature Content

Sharing Status:	Public
Publication Status:	Pending Metadata Review This resource is under review for minimum metadata and to ensure that it adheres to community guidelines.
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Abstract

This repository contains the code and data needed to reproduce the findings in the homonimous research paper "A Century of Water Quality Sampling in Rivers of the United States" to be published in Communications Earth and Environment (https://www.nature.com/commsenv/)

The repository has a simple structure with two folders: 1Code and 2Data. The first folder contains five .R files that follow the exact same order of the sections and figures in the paper. The code in each of these files is commented with great detail, so that all main and supplementary figures are explicitly mentioned in the code, as well as the files and data sources needed to run the code. The second folder contains all files needed to reproduce the figures, except for the two largest datasets which can be downloaded directly from their source, as also mentioned in the code.

These two additional sources are 1) The National Hydrography Dataset High Resolution (NHD-HR), downloadable through https://www.usgs.gov/national-hydrography/access-national-hydrography-products, and 2) The ChemLotUS dataset, downloadable through a HydroShare repository (https://doi.org/10.4211/hs.9b2b865acc51481babc74599470a3bfc) and comprehensively described in the corresponding paper published in Water Resources Research (https://doi.org/10.1029/2024WR039355)

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Coverage

Spatial

Coordinate System/Geographic Projection:

WGS 84 EPSG:4326

Coordinate Units:

Decimal degrees

Place/Area Name:

Conterminous United States

North Latitude

49.3800°

East Longitude

-66.9500°

South Latitude

24.5200°

West Longitude

-124.7700°

Temporal

Start Date:
End Date:

Content

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Data Services

The following web services are available for data contained in this resource. Geospatial Feature and Raster data are made available via Open Geospatial Consortium Web Services. The provided links can be copied and pasted into GIS software to access these data. Multidimensional NetCDF data are made available via a THREDDS Data Server using remote data access protocols such as OPeNDAP. Other data services may be made available in the future to support additional data types.

Web Map Service

https://geoserver.hydroshare.org/geoserver/HS-7ce85b47dbf74588a36f46b1b226c5a2/wms?request=GetCapabilities

Web Feature Service

https://geoserver.hydroshare.org/geoserver/HS-7ce85b47dbf74588a36f46b1b226c5a2/wfs?request=GetCapabilities

Related Geospatial Features

This HydroShare resource is linked to the following geospatial features

Geoconnex, through the Internet of Water: This field allows you to relate this resource to overlapping geospatial features in order to increase the FAIRness and discoverability of your data. Below, collections of reference features within the United States are provided. Search these collections to find features that overlap with your data, or provide a URL that resolves to a geospatial feature not yet in the Geoconnex collections.
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Related Resources

This resource requires	Fernandez, N., Cohen, M. J., Jawitz, J. W. (2025). ChemLotUS: A Benchmark Dataset of Lotic Chemistry across US River Networks, HydroShare, https://doi.org/10.4211/hs.9b2b865acc51481babc74599470a3bfc
This resource requires	National Hydrography Dataset High Resolution (NHD-HR), accessible through https://www.usgs.gov/national-hydrography/nhdplus-high-resolution and/or https://prd-tnm.s3.amazonaws.com/index.html?prefix=StagedProducts/Hydrography/NHDPlusHR/

How to Cite

Fernandez, N., Zuccolotto, G., Lucchese, L., Slevin, V., Godavarthy, G., Gardner, J., Cohen, M. J., Jawitz, J. W. (2026). A Century of Water Quality Sampling in Rivers of the United States, HydroShare, http://www.hydroshare.org/resource/7ce85b47dbf74588a36f46b1b226c5a2

This resource is shared under the Creative Commons Attribution CC BY.

http://creativecommons.org/licenses/by/4.0/

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