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

    Surface Water - Aquatic Organism Tissue Sample Results

    Metadata Updated: January 23, 2026

    This data set provides results of tissue from organisms found in surface waters, from the California Environmental Data Exchange Network (CEDEN). The data are of tissue from individual organisms and of composite samples where tissue samples from multiple organisms are combined and then analyzed. Both the individual samples and the composite sample results may be given so for individual samples, there will be a row for the individual sample and a row for the composite where the number per composite is one.

    The data set contains two provisionally assigned values (“DataQuality” and “DataQualityIndicator”) to help users interpret the data quality metadata provided with the associated result.

    Due to file size limitations, the data has been split into individual resources by year. The entire dataset can also be downloaded in bulk using the zip files on this page (in csv format or parquet format), and developers can also use the API associated with each year's dataset to access the data.

    Users who want to manually download more specific subsets of the data can also use the CEDEN Query Tool, which provides access to the same data presented here, but allows for interactive data filtering.

    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.

    Downloads & Resources

    Dates

    Metadata Created Date July 23, 2021
    Metadata Updated Date January 23, 2026

    Metadata Source

    Harvested from State of California

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date July 23, 2021
    Metadata Updated Date January 23, 2026
    Publisher California State Water Resources Control Board
    Maintainer
    Identifier 38cb5cca-1500-42e7-b359-e8e3c5d1e087
    Data First Published 2019-08-10T04:35:48.189897
    Data Last Modified 2026-01-10T01:08:59.457966
    Category 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
    Harvest Object Id 3f88c675-3ebc-41f7-88a5-4435017ee5a1
    Harvest Source Id 3ba8a0c1-5dc2-4897-940f-81922d3cf8bc
    Harvest Source Title State of California
    Source Datajson Identifier True
    Source Hash cfeb9610ccf2bf7246d2d9f593a58fe8c5d6e28d012fe9eef0ecde132d3e19f3
    Source Schema Version 1.1

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