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    Tidal Shoreline Flood Hazard Area

    Metadata Updated: January 14, 2026

    The tidal shoreline buffer includes the areas along the banks of the Potomac and Anacostia Rivers that are projected to be inundated by tides on a daily basis by 2080. These areas are regulated under the DC Flood Hazard Rules. To calculate this area, DOEE used 3.4 feet as the expected amount of relative sea level rise between 2000 and 2080 which is the Intermediate-High Projection in 2080 from the 2022 NOAA Sea Level Rise Technical Report. 3.4 feet is added to 2.0 feet NAVD88 (which is mean higher high water in the year 2000) to arrive at the 5.4 foot NAVD88 elevation that sets the extent of the tidal shoreline buffer. Additional details and diagrams in presentation slides 5, 32-36:

    https://doee.dc.gov/sites/default/files/dc/sites/doee/publication/attachments/Flood%20Regulation%20Updates%202024-08-01%20Info%20Presentation.pdf

    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 May 28, 2025
    Metadata Updated Date January 14, 2026

    Metadata Source

    Harvested from DC data

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date May 28, 2025
    Metadata Updated Date January 14, 2026
    Publisher Department of Energy and Environment
    Maintainer
    Identifier https://www.arcgis.com/home/item.html?id=06b5b8b35619444e8809a4041b61db35&sublayer=2
    Data First Published 2025-05-27T20:01:08.000Z
    Data Last Modified 2026-01-08T21:12:40.000Z
    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 f785a556-cf1e-4c41-8aa6-e19571e78062
    Harvest Source Id b05f955a-65d6-4288-9558-15a5ebc74e36
    Harvest Source Title DC data
    Homepage URL https://opendata.dc.gov/datasets/DCGIS::tidal-shoreline-flood-hazard-area
    License https://creativecommons.org/licenses/by/4.0
    Metadata Type geospatial
    Old Spatial -77.1194,38.7855,-76.9377,38.9345
    Source Datajson Identifier True
    Source Hash 8293a9a097ecdf582649556181cb72aea4ef9b0788954fe87d7fba2d84bff186
    Source Schema Version 1.1
    Spatial {"type": "Polygon", "coordinates": -77.1194, 38.7855, -77.1194, 38.9345, -76.9377, 38.9345, -76.9377, 38.7855, -77.1194, 38.7855}

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