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    • The LakeCat Dataset: Accumulated Attributes for NHDPlusV2 (Version 2.1) Catchments for the Conterminous United States: National Elevation Dataset

    Metadata Updated: November 14, 2023

    This dataset represents the elevation values within individual local and accumulated upstream catchments for NHDPlusV2 Waterbodies based on the National Elevation Dataset. Catchment boundaries in LakeCat are defined in one of two ways, on-network or off-network. The on-network catchment boundaries follow the catchments provided in the NHDPlusV2 and the metrics for these lakes mirror metrics from StreamCat, but will substitute the COMID of the NHDWaterbody for that of the NHDFlowline. The off-network catchment framework uses the NHDPlusV2 flow direction rasters to define non-overlapping lake-catchment boundaries and then links them through an off-network flow table. NHDPlusV2 records NED snapshot dates as follows: August 2010 - VPU04 February 2011 - VPUs 05, 06 June 2011 - VPU 17 August 2011 - VPUs 07, 10L, 10U, 11, 18 December 2011 - VPUs 01, 02, 03N, 03S, 03W, 08, 09, 12, 13, 14, 15, 16 The elevation characteristics were summarized 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://gaftp.epa.gov/epadatacommons/ORD/NHDPlusLandscapeAttributes/LakeCat/FinalTables/
    https://edg.epa.gov/metadata/catalog/search/resource/details.page?uuid=FD387D2B-CCD3-4D17-ACDE-A9A8426CA1CA

    Dates

    Metadata Created Date October 3, 2023
    Metadata Updated Date November 14, 2023
    Data Update Frequency R/P3Y

    Metadata Source

    Harvested from LakeCat Harvest

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date October 3, 2023
    Metadata Updated Date November 14, 2023
    Publisher U.S. Environmental Protection Agency, Office of Research and Development (ORD), Center for Public Health and Environmental Assessment (CPHEA), Pacific Ecological Systems Division (PESD),
    Maintainer
    Identifier FD387D2B-CCD3-4D17-ACDE-A9A8426CA1CA
    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/ORD/NHEERL/WED/NonGeo/LakeCat.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/lakecat-metrics-and-definitions
    Data Dictionary Type text/html
    Harvest Object Id 42092b71-41b7-463d-aa1c-a2bb417df9b5
    Harvest Source Id 54618c4c-64b6-4a3b-9748-ad612299d8a0
    Harvest Source Title LakeCat Harvest
    Homepage URL https://www.epa.gov/national-aquatic-resource-surveys/lakecat-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://gaftp.epa.gov/epadatacommons/ORD/NHDPlusLandscapeAttributes/LakeCat/FinalTables/, https://edg.epa.gov/metadata/catalog/search/resource/details.page?uuid=FD387D2B-CCD3-4D17-ACDE-A9A8426CA1CA
    Source Datajson Identifier True
    Source Hash 3e64be6792ddcb09f82517c4f99efa8be211fa52e56e8b01602f8aca4e113137
    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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