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

    California's Groundwater Basin Boundary Descriptions

    Metadata Updated: July 24, 2025

    In conjunction with the release of California’s Groundwater Update 2020, DWR has compiled a comprehensive list of the official basin boundary descriptions for all of California’s 515 groundwater basins. These descriptions were originally developed by DWR as part of California’s Groundwater (B-118) Update 2003 and have since been updated for some groundwater basins as a result of the 2016 and 2018 Basin Boundary Modifications. To make locating descriptions easier, they have been organized by region which is determined by the first number of the basin number (i.e. 1-XXX).

    The original basin descriptions developed for California’s Groundwater (B-118) Update 2003 also included summaries of the hydrologic and hydrogeologic setting, groundwater storage capacity and water budget, groundwater level and quality trends, well yields, basin management, and references. This additional information contained in the basin descriptions will now be referred to as “basin reports” and are still available online as part of the Bulletin 118 - Update 2003 report.

    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: No license information was provided.

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    Dates

    Metadata Created Date July 24, 2025
    Metadata Updated Date July 24, 2025

    Metadata Source

    Harvested from State of California

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date July 24, 2025
    Metadata Updated Date July 24, 2025
    Publisher California Department of Water Resources
    Maintainer
    Identifier e98a230c-58f1-4748-a547-1c1de6cc2083
    Data First Published 2021-08-09T17:55:13.274349
    Data Last Modified 2021-10-27T15:17:13.463505
    Category Natural Resources, Water
    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
    Datagov Dedupe Retained 20250724164837
    Harvest Object Id 1977d51f-59f0-4186-8cd3-5a8b41e6d93f
    Harvest Source Id 3ba8a0c1-5dc2-4897-940f-81922d3cf8bc
    Harvest Source Title State of California
    Source Datajson Identifier True
    Source Hash 7719c4c5b54e0d4205387d8f43815a809bcb69541d32f80fbf211a4fc98bb972
    Source Schema Version 1.1

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