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  1. California Open Data

    i04 CIMIS Reference Evapotranspiration Zones v1999

    California Department of Water ResourcesUpdated 11 Nov 2026

    The ETo Zones Map allows users to view the grass-reference evapotranspiration (ETo) Zones for the State of …

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    • ARCGIS GEOSERVICES REST API
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  2. California Open Data

    Terrestrial and Marine Reference

    California Natural Resources AgencyUpdated 12 Nov 2026

    These boundaries define the regions based on terrestrial and marine areas. These are intended to be used in …

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    • +4
  3. California Open Data

    Access Explorer City County Reference

    California Natural Resources AgencyUpdated 12 Nov 2026

    Half-mile access sheds to open access open space in the conservation areas dataset built for CA Nature …

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  4. California Open Data

    Public Road Functional Classification

    CaltransUpdated 11 Nov 2026

    This Functional Classification dataset was exported from Caltrans Linear Reference System (LRS) on July 3rd, 2024. The LRS …

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  5. California Open Data

    State Highway Network Odometer

    CaltransUpdated 11 Nov 2026

    The Odometer dataset is used to support accurate distance-based referencing along the State Highway Network. It helps …

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  6. California Open Data

    Regions CCSESA

    California Department of EducationUpdated 11 Nov 2026

    Through a system of 11 service regions, CCSESA provides the organizational mechanism for the 58 County Superintendents of …

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    • +4
  7. California Open Data

    California All Public Roads Network

    CaltransUpdated 11 Nov 2026

    The Caltrans All Roads Linear Referencing Services (LRS) dataset provides the base geometry for federally required Highway Performance …

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  8. California Open Data

    Adopt-A-Highway (AAH) All Highways

    CaltransUpdated 11 Nov 2026

    … Spatial reference follows the SHN_lines source; confirm before publishing.

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  9. California Open Data

    Marine Districts - R7 - CDFW [ds3149]

    California Department of Fish and WildlifeUpdated 11 Nov 2026

    This dataset represents the California Department of Fish and Wildlife Districts used in commercial fishing regulations and referenced …

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  10. California Open Data

    Park Entry Points

    California Department of Parks and RecreationUpdated 12 Nov 2026

    … Statewide park access mapping, web maps, visitor information products, planning maps, dashboards, and reference applications.

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    • +4
  11. California Open Data

    Elk Hunt Zones [ds786]

    California Department of Fish and WildlifeUpdated 11 Nov 2026

    … The boundaries are approximate and are intended for reference only. It is the user’s responsibility to refer …

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  12. California Open Data

    Rail Lines BNSF, UPRR

    CaltransUpdated 11 Nov 2026

    … For the original dataset, please refer to the Caltrans GIS Data Hub web page. The purpose of the …

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  13. California Open Data

    Park Boundaries

    California Department of Parks and RecreationUpdated 12 Nov 2026

    … California State Park Boundaries are for reference and not for official or legal property boundary determination. Current as …

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    • +4
  14. California Open Data

    State Highway Network Postmiles

    CaltransUpdated 14 Nov 2026

    StateHighways are state highways based upon the Caltrans Linear Referencing System. Each record in this layer represents a …

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  15. California Open Data

    i12 Delta Hydrology

    California Department of Water ResourcesUpdated 11 Nov 2026

    This point dataset represents the location of gaging stations in the Sacramento-San Joaquin Delta and Suisun Marsh …

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  16. California Open Data

    High Occupancy Vehicle

    CaltransUpdated 11 Nov 2026

    … This is referred to as "part-time" operation. In Southern California, HOV lanes are generally separated from other …

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  17. California Open Data

    Bighorn Sheep Infrastructure Projects - CDFW [ds3401]

    California Department of Fish and WildlifeUpdated 11 Nov 2026

    Refer to the CDFW Bighorn Sheep website for additional information: https://wildlife.ca.gov/Conservation/Mammals/Bighorn-Sheep …

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  18. California Open Data

    California Rail Network

    CaltransUpdated 11 Nov 2026

    The purpose of the data is to represent the rail network using available reference data and information contained …

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  19. California Open Data

    Bighorn Sheep Herd Units - CDFW [ds3400]

    California Department of Fish and WildlifeUpdated 11 Nov 2026

    Please refer to the official CDFW bighorn sheep website for additional information on conservation, management, and the recovery …

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  20. California Open Data

    Elk Management Units - CDFW [ds2905]

    California Department of Fish and WildlifeUpdated 11 Nov 2026

    … For details refer to Elk Mangment page or the Elk Management and Conservation Plan link below. https://wildlife …

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“reference” datasets · Open Data Finder