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

    Storm Surge Risk Areas

    Metadata Updated: February 5, 2025

    This data reflects areas with a risk of storm tide flooding from hurricanes, based on potential storm tide heights calculated by the National Weather Service's SLOSH (Sea, Lake, and Overland Surge from Hurricanes) Model. The SLOSH Basin used for mapping was Chesapeake Bay (CP5), released in 2014. This data was prepared by the U.S. Army Corps of Engineers, Baltimore District, Planning Division in January 2016. SLOSH storm tide elevations used for this mapping are based on the Maximum of Maximums (MOM) SLOSH output dataset. The MOM output elevations represent the highest calculated storm tide values based on thousands of SLOSH simulations using different combinations of approach direction, forward speed, landfall point, astronomical tide, and intensity (Category 1 through Category 4). Categories 1 through 4 refer to the Saffir-Simpson scale of hurricane intensity. This map does not reflect the expected storm tide flooding for every hurricane, or for any one particular type of hurricane. This map shows the overall footprint of the area that has some risk of storm tide flooding from hurricanes, based on the MOM output dataset.

    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 5, 2025

    Metadata Source

    Harvested from DC data

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date April 30, 2024
    Metadata Updated Date February 5, 2025
    Publisher U.S. Army Corps of Engineers
    Maintainer
    Identifier https://www.arcgis.com/home/item.html?id=a081c2756d844eb398de6ea4bf936ced&sublayer=36
    Data First Published 2015-02-27T20:55:54.000Z
    Data Last Modified 2024-09-26T14:19:02.000Z
    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 e5e4571e-3009-453d-93c9-633bf9dbddf5
    Harvest Source Id b05f955a-65d6-4288-9558-15a5ebc74e36
    Harvest Source Title DC data
    Homepage URL https://opendata.dc.gov/datasets/DCGIS::storm-surge-risk-areas
    License https://creativecommons.org/licenses/by/4.0
    Metadata Type geospatial
    Old Spatial -77.1192,38.8100,-76.9354,38.9348
    Source Datajson Identifier True
    Source Hash 84249e989add2c1c3271367931061cb3307283d4b08ec5f0eef7e6f5836c12e6
    Source Schema Version 1.1
    Spatial {"type": "Polygon", "coordinates": -77.1192, 38.8100, -77.1192, 38.9348, -76.9354, 38.9348, -76.9354, 38.8100, -77.1192, 38.8100}

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