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    • The StreamCat Dataset: Accumulated Attributes for NHDPlusV2 (Version 2.1) Catchments for the Conterminous United States: PRISM Normals Data

    Metadata Updated: December 2, 2025

    This dataset represents climate observations within individual, local NHDPlusV2 catchments and upstream, contributing watersheds. Attributes of the landscape layer were calculated for every local NHDPlusV2 catchment and accumulated to provide watershed-level metrics. PRISM is a set of monthly, yearly, and single-event gridded data products of mean temperature and precipitation, max/min temperatures, and dewpoints, primarily for the United States. In-situ point measurements are ingested into the PRISM (Parameter elevation Regression on Independent Slopes Model) statistical mapping system. The PRISM products use a weighted regression scheme to account for complex climate regimes associated with orography, rain shadows, temperature inversions, slope aspect, coastal proximity, and other factors. These data are summarized by local catchment and by watershed to produce local catchment-level and watershed-level metrics as a continuous data type.

    Access & Use Information

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

    Downloads & Resources

    References

    https://www.epa.gov/national-aquatic-resource-surveys/streamcat-dataset#access-streamcat-data
    https://edg.epa.gov/metadata/catalog/search/resource/details.page?uuid=CE7978C6-6F61-4643-9BAB-695FA4478364

    Dates

    Metadata Created Date October 3, 2023
    Metadata Updated Date December 2, 2025
    Data Update Frequency R/P3Y

    Metadata Source

    Harvested from StreamCat Harvest

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date October 3, 2023
    Metadata Updated Date December 2, 2025
    Publisher U.S. Environmental Protection Agency, Office of Water,
    Maintainer
    Identifier CE7978C6-6F61-4643-9BAB-695FA4478364
    Data First Published 2015-04-23
    Language en-US
    Data Last Modified 2023-11-13
    Rights public (Data asset is or could be made publicly available to all without restrictions)
    Category environment
    Public Access Level public
    Data Update Frequency R/P3Y
    Bureau Code 020:00
    Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
    Metadata Catalog ID https://edg.epa.gov/data/Public/OW/metadata/StreamCat.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
    Data Quality True
    Data Dictionary https://www.epa.gov/national-aquatic-resource-surveys/streamcat-metrics-and-definitions
    Data Dictionary Type text/html
    Harvest Object Id 3790e638-5b7b-4b9f-a32f-98155d73aea1
    Harvest Source Id e7d3a7e2-50b8-4149-949c-cf56c38224b3
    Harvest Source Title StreamCat Harvest
    Homepage URL https://www.epa.gov/national-aquatic-resource-surveys/streamcat-dataset
    License https://edg.epa.gov/EPA_Data_License.html
    Old Spatial -125.0,24.5,-66.5,49.5
    Program Code 020:072
    Related Documents https://www.epa.gov/national-aquatic-resource-surveys/streamcat-dataset#access-streamcat-data, https://edg.epa.gov/metadata/catalog/search/resource/details.page?uuid=CE7978C6-6F61-4643-9BAB-695FA4478364
    Source Datajson Identifier True
    Source Hash a89f4690d6c35d2828f62d364efbd3706679b79a5108e0dc3f3148408160c63f
    Source Schema Version 1.1
    Spatial {"type": "Polygon", "coordinates": -125.0, 24.5, -125.0, 49.5, -66.5, 49.5, -66.5, 24.5, -125.0, 24.5}
    Temporal 2015/2030

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