Data
WestCOG Data
- Index
- Administrative Areas
- Basemap
- Buildings
- Census
- Contours
- Environmental
- Hydrography
- Landcover Rasters
- Land Use Planning
- Parcels
- Stormwater
- Streets
- Transit
- WestCOG Imagery
- DEM and SEM
- Raw Lidar
CT Data Resources
Additional Data
Analytic Software
WestCOG Data
WestCOG has acquired a robust collection of regional data layers usable for map making, analyses, and planning. Much of it is derived from Planimetrics Data acquired in 2013 (SWRPA) and 2015 (HVCEO). Downloads are available below and by request.
Index
The FTP source page where the files below are stored. Here is a complete listing of publicly available data.
Administrative Areas
Town, regional, congressional, and school district boundaries.
Basemap
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:
https://tiles.arcgis.com/tiles/UwEXjTguDDovBVaQ/arcgis/rest/services/WestCOG_Natural_Resources_Basemap/MapServer
Buildings
Building foot print polygon data for all towns in WestCOG
Census
Census designated regions include block, block group, and tract shapes for our region.
Contours
20, 10, 5, 2, and 1 ft contours for the WestCOG region. Deata derived from 2014 Lidar Data.
Environmental
Trees, soils, and riparian data
Hydrography
Streams rivers and lakes
Landcover Rasters
DEM, SEM, impervious cover rasters
Land Use Planning
Zoning and open space data collected where available from communities
Parcels
Parcel data for communities in the WestCOG region.
Stormwater
Culverts and impervious cover totals by town, watershed, catchment areas and parcels.
Streets
Pavement polygons, road center lines, and street features.
Transit
Rail and bus data
WestCOG Orthoimagery
The most recent imagery for the region is 3″ and 4-band imagery from the 2016 statewide flight and can be obtained on CT Eco. Imagery of the same type is available from the GIS Department for 2013 (SWRPA towns) and 2015 (HVCEO towns). If needed, please contact WestCOG directly to establish a form of data delivery.
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.
Raw Lidar
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 Profiles
CTECO
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.