- GIS Data Hub
- Administrative Areas
- TAZ Projections
- Landcover Rasters
- Land Use Planning
- WestCOG 2014 Imagery
- DEM and SEM
- Raw Lidar
GIS Data Hub
Explore WestCOG GIS data online using our Hub Site. The Hub provides access to maps, applications and gis data all within an easy to navigate interface. Casual viewers can now explore our hosted visually.
For those GIS pro users with the necessary software and a need for fast and large downloads, continue exploring our data page.
Town, regional, congressional, and school district boundaries.
WestCOG shares a basemap with all its planimetrics and contour data in tile format which can be viewed online or loaded directly into your GIS by adding data through a URL, reference URL below:
Building foot print polygon data for all towns in WestCOG
Census designated regions include block, block group, and tract shapes for our region.
20, 10, 5, 2, and 1 ft contours for the WestCOG region. Data derived from 2014 Lidar Data.
TAZ demographic population projections are currently available. These were created for the NYC Metro Area.
Trees, soils, and riparian data
Streams rivers and lakes
DEM, SEM, impervious cover rasters
Land Use Planning
Parcels, Zoning and open space data collected where available from communities
Culverts and impervious cover totals by town, watershed, catchment areas and parcels.
Pavement polygons, road center lines, and street features.
Rail and bus data
WestCOG 2014 Orthoimagery
WestCOG owns a 2014 Leaf off flight data with 3″ resolution and 4-bands and can be acquired upon special request. The latest orthoimagery can be obtained on CT Eco.
DEM and SEM
Digital Elevation Model (DEM), shows elevation of the surface only and does not represent features such as trees or buildings. Surface Elevation Model (SEM) depicts features as well, including buildings and trees.
A large data set not available for download. If needed, please contact WestCOG directly to establish a form of data delivery.
CT Data Resources
Town Data Profiles
Two page summaries with key data for each municipality in CT and regularly updated by the CT Data Collaborative and Advance CT.
Connecticut Environmental Conditions Online (CT ECO) shares imagery and environmental information with the general public through map services.
CT DEEP GIS Data
The primary data source of environmental and natural resource data from the State of Connecticut Department of Energy and Environmental Protection. Home to some unique data sets.
CT MAGIC GIS Data
A source of geographic information and Census data and is affiliated with the University of Connecticut library system.
CT Open Data Portal
The data clearinghouse for the State of Connecticut. A source for municipal and state demographics and government oriented data sets (e.g. public safety).
CT Data Collaborative
Striving for informed decision-making across Connecticut. CT Data Collaborative empowers an ecosystem of data users by democratizing access to public data and building data literacy.