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

    Hydrography Lines

    Metadata Updated: February 11, 2026

    This layer contains hydrography such as streams, rivers, and other linear hydrography features. Hidden hydrography, inferred drainage connectors, or culverts connect visible hydrography to form a continuous network. These connectors or hidden features maintain a predictable direction connecting the 2 points that conceal or infer the feature. Streams: Captured as single line if less than two meters wide. Both water edges plotted if wider than two meters. Docks and Piers: Visible outline delineated. Jetty: Visible outline delineated. Seawall: Single line plotted at the face of the seawall. Hidden Hydrography: Hidden hydrography is not obvious, even to someone standing under a bridge for example; it cannot be seen photogrammetrically and can be captured only from other sources. Segments of rivers, streams, and canals that flow under features such as bridges and roads are captured as continuous portions of the river, stream, or canal.

    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: Creative Commons Attribution

    Downloads & Resources

    Dates

    Metadata Created Date April 30, 2024
    Metadata Updated Date February 11, 2026

    Metadata Source

    Harvested from DC data

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date April 30, 2024
    Metadata Updated Date February 11, 2026
    Publisher Office of the Chief Technology Officer
    Maintainer
    Identifier https://www.arcgis.com/home/item.html?id=a37de99f786e448682aafe05a0c98baa&sublayer=13
    Data First Published 2015-02-27T20:55:41.000Z
    Data Last Modified 2026-02-11T03:08:45.000Z
    Category geospatial
    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 03a932ff-3605-49af-9c06-440a5cd15bd3
    Harvest Source Id b05f955a-65d6-4288-9558-15a5ebc74e36
    Harvest Source Title DC data
    Homepage URL https://opendata.dc.gov/datasets/DCGIS::hydrography-lines
    License https://creativecommons.org/licenses/by/4.0
    Metadata Type geospatial
    Old Spatial -77.1116,38.7920,-76.9134,38.9905
    Source Datajson Identifier True
    Source Hash 2df885e42ab28a3b4259270a979c6eeb390ad81e1594c5d6d061e2d6cd755022
    Source Schema Version 1.1
    Spatial {"type": "Polygon", "coordinates": -77.1116, 38.7920, -77.1116, 38.9905, -76.9134, 38.9905, -76.9134, 38.7920, -77.1116, 38.7920}

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