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    • Nitrogen Critical Loads and Estimated Exceedances in NPS Areas (2015–2017)

    Metadata Updated: January 25, 2026

    Critical loads are a tool the NPS uses to assess and understand the impacts of nitrogen deposition to park ecosystems and help inform policy and management decisions to protect them. This analysis compares critical loads to the maximum level of nitrogen deposition (from the 2015–2017 average NADP Total Deposition model) present within a boundary. When the total deposition exceeds the critical load there is an increased risk of ecological harm. These critical loads (adapted from Pardo et. al 2011) are developed at the ecoregion scale and should only be used to evaluate risk. Where park specific or more recent critical loads exist, these should be used instead.

    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.

    Downloads & Resources

    Dates

    Metadata Created Date January 14, 2026
    Metadata Updated Date January 25, 2026

    Metadata Source

    Harvested from DOI NPS DCAT-US

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date January 14, 2026
    Metadata Updated Date January 25, 2026
    Publisher National Park Service
    Maintainer
    Identifier http://datainventory.doi.gov/id/dataset/NPS_DataStore_2265957
    Data First Published 2019-08-01T00:00:00Z
    Data Last Modified 2019-08-01T00:00:00Z
    Category Tabular Dataset
    Public Access Level public
    Bureau Code 010:24
    Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
    Metadata Catalog ID https://ddi.doi.gov/nps-data.json
    Schema Version https://project-open-data.cio.gov/v1.1/schema
    Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
    Harvest Object Id 7118bf37-7835-485c-ae3d-445a9ef24e26
    Harvest Source Id d917c1a9-26b7-43ea-b8c5-c77ec750a850
    Harvest Source Title DOI NPS DCAT-US
    Homepage URL https://irma.nps.gov/DataStore/Reference/Profile/2265957
    Program Code 010:118, 010:119
    Source Datajson Identifier True
    Source Hash 1afd7e1cc591e5cef207c9231f7cff8e3d53046ac266110b217f4a8995c19d88
    Source Schema Version 1.1
    Temporal 2015-01-01/2017-01-01

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