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.

    Municipal Separate Storm Sewer System Area

    Metadata Updated: February 18, 2026

    This layer depicts a generalized boundary of the District’s Municipal Separate Storm Sewer System (MS4) drainage areas. Each sewershed shows the general drainage area of a system of pipes and structures that carries only stormwater runoff that empty into natural or manmade surface waterways. This data is a requirement of the District's MS4 Permit. It is used for stormwater management and all aspects supporting efforts to comply with the Clean Water Act in the District. The dataset contains locations and attributes of the drainage areas of MS4 outfalls.

    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 February 18, 2026
    Metadata Updated Date February 18, 2026

    Metadata Source

    Harvested from DC data

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date February 18, 2026
    Metadata Updated Date February 18, 2026
    Publisher City of Washington, DC
    Maintainer
    Identifier https://www.arcgis.com/home/item.html?id=7b160ea881874139872285440b5d2259&sublayer=0
    Data First Published 2015-02-27T20:55:53.000Z
    Data Last Modified 2026-02-06T00:00:00.000Z
    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 37e8c52c-888b-42f2-a9f1-30d6a0b93da7
    Harvest Source Id b05f955a-65d6-4288-9558-15a5ebc74e36
    Harvest Source Title DC data
    Homepage URL https://opendata.dc.gov/datasets/DCGIS::municipal-separate-storm-sewer-system-area
    License https://creativecommons.org/licenses/by/4.0
    Metadata Type geospatial
    Old Spatial -77.1144,38.8044,-76.9090,38.9943
    Source Datajson Identifier True
    Source Hash 63dd4f8d413eafa35a2bfaa3fb8219ce55453d542ca5adf17dddbd36693651af
    Source Schema Version 1.1
    Spatial {"type": "Polygon", "coordinates": -77.1144, 38.8044, -77.1144, 38.9943, -76.9090, 38.9943, -76.9090, 38.8044, -77.1144, 38.8044}

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