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

Identify Your Watershed and Sewer System Area App

Metadata Updated: July 30, 2025

This app displays a series of general information for an address, ___location, or where the user clicks in DC.Some information returned are:-Municipal Separate Storm Sewer System (MS4) area-Combined Sewer System (CSS) area-Watershed, Subwatershed, HUC12, HUC14, HUC16-Ward, ANC, SMD, and the address of the ___location-Census Tract and zip codeFor addresses along the borders of watersheds and sewer areas, further investigation should be taken.  For hydrologic calculations and determinations, the USGS Watershed Boundary Dataset (WBD) should be referenced.DC Water operates a "separate" (MS4) and "combined" (CSS) sewers. Since the early 1900's, sewers constructed within the District have been separate systems and no new combined sewer systems have been built.  These two independent piping systems: CSS mixes "sanitary" (sewage from homes and businesses) with stormwater while the MS4 is for "stormwater" only.  In the District, approximately two thirds of the District is served by the MS4. The remaining one-third is served by the CSS. Areas highlighted in blue are MS4, in orange are CSS, and in green are direct drain areas that drain directly to streams and rivers. The MS4 system discharges into portions of the Potomac, Anacostia and Rock Creek drainage areas.  The CSS drains to Blue Plains Advance Wastewater Treatment Facility.Visit DOEE - Water in the District Page or DOEE Environmental Mapping.For the USGS Hydrologic and Watershed Boundary Data for DC, visit this Link.Created with the Information Lookup Template from ESRIhttps://dcgis.maps.arcgis.com/home/item.html?id=54da82ed8d264bbbb7f9087df8c947c3

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 July 30, 2025

Metadata Source

Harvested from DC data

Additional Metadata

Resource Type Dataset
Metadata Created Date April 30, 2024
Metadata Updated Date July 30, 2025
Publisher City of Washington, DC
Maintainer
Identifier https://www.arcgis.com/home/item.html?id=a60a0086b47c4e35a638b7a8abe5954f
Data First Published 2017-08-10T15:24:57.000Z
Data Last Modified 2025-07-17T15:30:20.000Z
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 0777c22c-f405-454e-a3cd-e66598b3c99f
Harvest Source Id b05f955a-65d6-4288-9558-15a5ebc74e36
Harvest Source Title DC data
Homepage URL https://opendata.dc.gov/apps/DCGIS::identify-your-watershed-and-sewer-system-area-app
License https://creativecommons.org/licenses/by/4.0
Metadata Type geospatial
Old Spatial -77.2258,38.7867,-76.8125,39.0009
Source Datajson Identifier True
Source Hash 027ce9600e6efd71b01fb9c5c0af1e155113389f0ccc7c32c21dfbae473ce0ce
Source Schema Version 1.1
Spatial {"type": "Polygon", "coordinates": -77.2258, 38.7867, -77.2258, 39.0009, -76.8125, 39.0009, -76.8125, 38.7867, -77.2258, 38.7867}

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