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

    SPU DWW Mainline Detention Polygons

    Metadata Updated: November 8, 2025

    SPU DWW Mainlines is a Group Layer containing all Lifecycles, Ownerships, and other variations of Drainage and Wastewater Mainlines. The Connected Mainlines are symbolized differently in two different layers, one displaying the Permitted Use of the pipe and another displaying the Probable Flow.Permitted Use describes the intended use of the pipe, including Sanitary, Combined, or Drainage flows. Probable Flow takes into account upstream pipes and makes an assumption on the type of flow within the pipes.Proposed Mainlines are planned but not yet installed or as-built.SPU DWW Aba Rem Mainlines refers to Abandoned and Removed Mainlines.Force Mainlines are Mainlines under pressure. Detention Lines and Polygons refer to Mainline Detention Infrastructure.The data is refreshed weekly and is maintained by the SPU GIS Data Maintenance Team. 

    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 October 20, 2023
    Metadata Updated Date November 8, 2025

    Metadata Source

    Harvested from Seattle JSON

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date October 20, 2023
    Metadata Updated Date November 8, 2025
    Publisher City of Seattle ArcGIS Online
    Maintainer
    Identifier https://www.arcgis.com/home/item.html?id=9cd1e993421543c197300dbe45e1ad77&sublayer=8
    Data First Published 2023-09-22
    Data Last Modified 2025-11-05
    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 0cbff4fc-273e-4c4c-9c11-63fe5d827642
    Harvest Source Id f61de7a2-69cf-40a9-a1bc-dd9edb8f3fe5
    Harvest Source Title Seattle JSON
    Homepage URL https://data-seattlecitygis.opendata.arcgis.com/datasets/SeattleCityGIS::spu-dww-mainline-detention-polygons
    Metadata Type geospatial
    Old Spatial -122.4236,47.3694,-121.7747,47.8588
    Source Datajson Identifier True
    Source Hash f733ed81872e46966dcf89d1aed22ac49bd5e57eba9fa6e123ece0f0246e2e9d
    Source Schema Version 1.1
    Spatial {"type": "Polygon", "coordinates": -122.4236, 47.3694, -122.4236, 47.8588, -121.7747, 47.8588, -121.7747, 47.3694, -122.4236, 47.3694}

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