Checked
State dataMaps & Geospatial
Interconnections
Published by Connecticut Department of Transportation · Updated 10/22/2026
- Last updated
- 10/22/2026
- First published 07/14/2026
- Update frequency
- Not listed
- Formats
- 5
- CSV, GeoJSON, KML
- Coverage
- Connecticut
- Statewide
About this dataset
This service represents CTDOT’s Stormwater Drainage Network. The data is collected from a collection of resources including completed construction plans, right-of-way plans, permits & field reconnaissance. Not all drainage features depicted on the map accurately reflect the condition of the drainage network that is currently built. Data is updated, modified and added daily by CTDOT to both grow the inventory of drainage structures statewide and to improve accuracy. Drainage data is collected for continued compliance of the CTDOT MS4 Permit and for CTDOT’s Asset Management Purposes.
Please refer to the CTDOT Maintenance Guide for definitions of all Drainage Features:
ctdot-ms4-gis-database-maintenance-guide-jan-2021.pdf
Files and access
Links open the official government source
- CSVgeodata.ct.govCSV
- ArcGIS GeoServiceservices1.arcgis.comJSON
- GeoJSONgeodata.ct.govGeoJSON
- Shapefilegeodata.ct.govZIP
- KMLgeodata.ct.govKML
- ArcGIS Hub Datasetgeodata.ct.govWeb page
Links open outside websites we do not control.
Frequently asked questions
- Who publishes Interconnections?
- Connecticut Department of Transportation, part of State of Connecticut, publishes this dataset on Data.gov.
- How often is it updated?
- The publisher does not list a schedule. The last update was on 10/22/2026.
- How do I download it?
- It is available as CSV, JSON, GeoJSON, ZIP, KML. Use the links in Files and access, which open the official government source.
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Where this catalog comes from
- Data.gov CatalogU.S. General Services Administration
- State and local open data portalsSocrata Discovery API
- State and city CKAN portalsCalifornia, Virginia, Boston, Houston and more
- Government ArcGIS Hub sitesCity and county GIS data
Catalog checked 10/29/2026
We list dataset descriptions only. Downloads and APIs link straight to the official government source, which holds the current version and its terms of use.
Source: Data.gov · Last updated 10/29/2026 · Listing only; the data stays with the publisher
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