Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Skip to content

Try the next-generation Data Catalog at catalog-beta.data.gov and help shape it with your feedback.

  • Feedback

    • Water Stable Isotope data from NARS (NRSA and NLA)

    Metadata Updated: June 5, 2025

    Water stable isotope data measured on water chemistry samples collected as part of the National Aquatic Resource Surveys (NARS). One file is for the National Rivers and Streams Assessment (NRSA), and contains the data collected in 2008-2009, 2013-2014, and 2018-2019. The other file is for the National Lakes Assessment (NLA) and contains the water isotope data, as well as evaporation to inflow and water residence time calculated from the water isotope data from samples collected in 2007, 2012, and 2017. More data about these sites can be obtained from the EPA NARS website: https://www.epa.gov/national-aquatic-resource-surveys/data-national-aquatic-resource-surveys.

    This dataset is associated with the following publication: Putman, A., P. Longley, M. McDonnell, J. Reddy, M. Katoski, O. Miller, and J. Brooks. Isotopic evaluation of the National Water Model reveals missing agricultural irrigation contributions to streamflow across the western United States. HYDROLOGY AND EARTH SYSTEM SCIENCES. EGS, 28(13): 2895–2918, (2024).

    Access & Use Information

    Public: This dataset is intended for public access and use. License: See this page for license information.

    Downloads & Resources

    References

    https://doi.org/10.5194/hess-28-2895-2024
    https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11457154

    Dates

    Metadata Created Date June 27, 2024
    Metadata Updated Date June 5, 2025

    Metadata Source

    Harvested from EPA ScienceHub

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date June 27, 2024
    Metadata Updated Date June 5, 2025
    Publisher U.S. EPA Office of Research and Development (ORD)
    Maintainer
    Identifier https://doi.org/10.23719/1531017
    Data Last Modified 2025-06-02
    Public Access Level public
    Bureau Code 020:00
    Schema Version https://project-open-data.cio.gov/v1.1/schema
    Harvest Object Id e95649cb-234e-4ad1-af54-cf2270c30af5
    Harvest Source Id 04b59eaf-ae53-4066-93db-80f2ed0df446
    Harvest Source Title EPA ScienceHub
    License https://pasteur.epa.gov/license/sciencehub-license.html
    Program Code 020:000
    Publisher Hierarchy U.S. Government > U.S. Environmental Protection Agency > U.S. EPA Office of Research and Development (ORD)
    Related Documents https://doi.org/10.5194/hess-28-2895-2024, https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11457154
    Source Datajson Identifier True
    Source Hash c1804d3b9956b4ee265ea905e8d5659074143f3e1d0e9df789fcad8e1640b907
    Source Schema Version 1.1

    Didn't find what you're looking for? Suggest a dataset here.