Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Skip to content

Try the next-generation Data Catalog at catalog-beta.data.gov and help shape it with your feedback.

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

    ECA - Flood Prone Area

    Metadata Updated: March 1, 2026

    FEMA flood prone areas with 100 foot buffer. Original flood prone areas where table digitized into the City of Seattle GIS CGDB control layer in the mid 90's. Layer may be used without the buffer by unselecting the flood = 1 feature type.   This layer is used by the City as an aid to evaluate construction sites for the presence of flood prone areas pertinent to Environmentally Critical Areas (ECA)  regulations.   Areas that would likely be covered with or carry water as a result of a one hundred (100) year flood event, or that would have a one percent (1%) or greater chance of being covered with or of carrying water in any given year based on current circumstances or maximum development permitted under existing zoning.

    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 March 1, 2026
    Metadata Updated Date March 1, 2026

    Metadata Source

    Harvested from Seattle JSON

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date March 1, 2026
    Metadata Updated Date March 1, 2026
    Publisher City of Seattle ArcGIS Online
    Maintainer
    Identifier https://www.arcgis.com/home/item.html?id=cfb00dc1043e4e0e87181b2ab6c59862&sublayer=0
    Data First Published 2026-02-09
    Data Last Modified 2026-02-17
    Category geospatial
    Public Access Level public
    Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
    Metadata Catalog ID https://cos-data.seattle.gov/data.json
    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 c2b03f52-1953-4f48-946a-d85cc8e6c771
    Harvest Source Id f61de7a2-69cf-40a9-a1bc-dd9edb8f3fe5
    Harvest Source Title Seattle JSON
    Homepage URL https://data-seattlecitygis.opendata.arcgis.com/datasets/SeattleCityGIS::eca-flood-prone-area
    Metadata Type geospatial
    Old Spatial -122.4344,47.4927,-122.2729,47.7356
    Source Datajson Identifier True
    Source Hash ad22f6498c239b7975e7179cd4c8549d717c835652d3583bd8de4e0bea888b60
    Source Schema Version 1.1
    Spatial {"type": "Polygon", "coordinates": -122.4344, 47.4927, -122.4344, 47.7356, -122.2729, 47.7356, -122.2729, 47.4927, -122.4344, 47.4927}

    Didn't find what you're looking for? Suggest a dataset here.