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HUC Watershed Poly

Published by Department of Energy & Environmental Protection | State of Connecticut | Catalog Last Checked: August 25, 2026 at 10:56 PM | Dataset Last Updated: July 23, 2026
This data set is a digital hydrologic unit boundary layer that is at the Subwatershed (12-digit) level. The original data set was developed by delineating the boundary lines on base USGS 1:24000 scale topographic quadrangle, and digitizing the delineated lines. Digital Raster Graphics (DRG) images were used for edits to the data layer.This data set consists of geo-referenced digital map data and attribute data. The spatial data are in a statewide coverage format and include complete coverage of the entire state of Connecticut, and small parts of surrounding states. The hydrologic unit ID code attached to each delineated polygon is linked to the attribute data. 

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Complete Metadata
@type dcat:Dataset
accessLevel public
contactPoint 
{
  "fn": "deepgis",
  "@type": "vcard:Contact",
  "hasEmail": "mailto:deep.helpdesk.footprints@ct.gov"
}
description <div><span style='font-family:-apple-system, BlinkMacSystemFont, &quot;Segoe UI&quot;, system-ui, &quot;Apple Color Emoji&quot;, &quot;Segoe UI Emoji&quot;, &quot;Segoe UI Web&quot;, sans-serif; font-size:14px;'>This data set is a digital hydrologic unit boundary layer that is at the Subwatershed (12-digit) level. The original data set was developed by delineating the boundary lines on base USGS 1:24000 scale topographic quadrangle, and digitizing the delineated lines. Digital Raster Graphics (DRG) images were used for edits to the data layer.</span></div><div><span><span style='font-family:-apple-system, BlinkMacSystemFont, &quot;Segoe UI&quot;, system-ui, &quot;Apple Color Emoji&quot;, &quot;Segoe UI Emoji&quot;, &quot;Segoe UI Web&quot;, sans-serif; font-size:14px;'><p>This data set consists of geo-referenced digital map data and attribute data. The spatial data are in a statewide coverage format and include complete coverage of the entire state of Connecticut, and small parts of surrounding states. The hydrologic unit ID code attached to each delineated polygon is linked to the attribute data.<br /><br /></p> </span></span></div>
distribution 
[
  {
    "@type": "dcat:Distribution",
    "title": "CSV",
    "mediaType": "text/csv",
    "downloadURL": "https://geodata.ct.gov/api/download/v1/items/796f261d1b5a4870930aacd0c195f42a/csv?layers=2"
  },
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    "@type": "dcat:Distribution",
    "title": "Excel",
    "mediaType": "application/vnd.ms-excel",
    "downloadURL": "https://geodata.ct.gov/api/download/v1/items/796f261d1b5a4870930aacd0c195f42a/excel?layers=2"
  },
  {
    "@type": "dcat:Distribution",
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    "mediaType": "text/plain",
    "downloadURL": "https://geodata.ct.gov/api/download/v1/items/796f261d1b5a4870930aacd0c195f42a/featureCollection?layers=2"
  },
  {
    "@type": "dcat:Distribution",
    "title": "File Geodatabase",
    "mediaType": "application/zip",
    "downloadURL": "https://geodata.ct.gov/api/download/v1/items/796f261d1b5a4870930aacd0c195f42a/filegdb?layers=2"
  },
  {
    "@type": "dcat:Distribution",
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    "downloadURL": "https://geodata.ct.gov/api/download/v1/items/796f261d1b5a4870930aacd0c195f42a/geoPackage?layers=2"
  },
  {
    "@type": "dcat:Distribution",
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  },
  {
    "@type": "dcat:Distribution",
    "title": "KML",
    "mediaType": "application/vnd.google-earth.kml+xml",
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  },
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  },
  {
    "@type": "dcat:Distribution",
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    "downloadURL": "https://geodata.ct.gov/api/download/v1/items/796f261d1b5a4870930aacd0c195f42a/sqlite?layers=2"
  },
  {
    "@type": "dcat:Distribution",
    "title": "ArcGIS Hub Dataset",
    "mediaType": "text/html",
    "downloadURL": "https://geodata.ct.gov/datasets/CTDEEP::huc-watershed-poly"
  },
  {
    "@type": "dcat:Distribution",
    "title": "ArcGIS GeoService",
    "mediaType": "application/json",
    "downloadURL": "https://services1.arcgis.com/FjPcSmEFuDYlIdKC/arcgis/rest/services/Watershed_Boundary_Dataset/FeatureServer/2"
  }
]
identifier https://www.arcgis.com/home/item.html?id=796f261d1b5a4870930aacd0c195f42a&sublayer=2
issued 2025-06-13
keyword 
[
  "hydrologic units",
  "subwatersheds",
  "watershed boundary dataset",
  "watersheds",
  "wbd"
]
landingPage https://geodata.ct.gov/datasets/CTDEEP::huc-watershed-poly
license https://creativecommons.org/publicdomain/zero/1.0
modified 2026-07-23
publisher 
{
  "name": "Department of Energy & Environmental Protection",
  "@type": "org:Organization"
}
spatial -73.7348,40.9388,-71.6326,42.2301
theme 
[
  "geospatial"
]
title HUC Watershed Poly

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