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    • This is a Non-Federal dataset covered by different Terms of Use than Data.gov.

    Vegetation - Northern Sierra Nevada Foothills [ds566]

    Metadata Updated: March 23, 2026

    The California Department of Fish and Wildlife (CDFW) contracted the California Native Plant Society (CNPS) and Aerial Information Systems (AIS) to produce a fine-scale vegetation map of the northern Sierra Nevada Foothills region, here defined by the two northern subsections of the USDA's Sierra Nevada Foothills Section (Miles and Goudey 1997).

    This includes 2.6 million acres of land, with approximately 15 percent under public ownership and 85 percent under private ownership. Vegetation sampling by means of the CNPS Relevé and Rapid Assessment Protocols was used to obtain a total of 710 Relevés and 1691 Rapid Assessments, which were used to develop a quantitative classification based on cluster and indicator species analyses.

    The resulting classification describes vegetation types according to the National Vegetation Classification System; and was used as a basis for creating a map classification generally at the alliance level, where natural vegetation stands were discernable to that level using 1-meter aerial imagery acquired as part of the National Agricultural Imagery Program (NAIP) in 2005 and 2009. The vegetation map includes 67 map units, of which 54 are natural vegetation map units at the floristic alliance level or higher (group) level and 13 are non-vegetation land use mapping units. The minimum mapping unit (MMU) varies: 2 acres for vegetation alliances, 1 acre for various land types, 1 acre for urban areas and 10 acres for natural vegetation within an urban core.

    Access & Use Information

    Public: This dataset is intended for public access and use. Non-Federal: This dataset is covered by different Terms of Use than Data.gov. License: See this page for license information.

    Downloads & Resources

    Dates

    Metadata Created Date July 24, 2025
    Metadata Updated Date March 23, 2026

    Metadata Source

    Harvested from State of California

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date July 24, 2025
    Metadata Updated Date March 23, 2026
    Publisher California Department of Fish and Wildlife
    Maintainer
    Identifier ce4cffad-4859-4d47-8fb1-1c16f62749cb
    Data First Published 2022-04-12T23:04:03.000Z
    Data Last Modified 2025-11-10T20:27:04.947Z
    Category Natural Resources
    Public Access Level public
    Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
    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 63366912-1b28-4836-b8e3-cd3a220eb9dd
    Harvest Source Id 3ba8a0c1-5dc2-4897-940f-81922d3cf8bc
    Harvest Source Title State of California
    License http://www.opendefinition.org/licenses/cc-by
    Source Datajson Identifier True
    Source Hash 691fb3efe1fb37635cadc5093570ca7409b0d3af03cd186b7b92f20b521fb585
    Source Schema Version 1.1

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