Mapping and Data Resources

The Northwest Hills COG is working to advance the digital mapping capacity within the region. At the moment, about half of the 21 towns in the region have an existing GIS (geographic information service) program. The NHCOG has the capacity to create maps using existing content, which expands with each project.

Regional Map Viewer

This map viewer, created by NHCOG, collates available data sets including regional trails, political boundaries, hydrography, major roads, groundwater quality, etc. This viewer is available from the NHCOG homepage and at this link: Regional Map Viewer. Instructions on how to use the Regional Map Viewer will be available soon.

The following town viewers are available the public: BarkhamstedBurlingtonGoshenNew HartfordRoxbury,TorringtonWarren, and Winchester.

DEMHS Region 5 Critical Facilities & Equipment

DEMHS Region 5 Map shows parcel boundaries, critical facilities, and an inventory of regional equipment.

Regional Trails

Over the spring and summer of 2017, our consultant, Housatonic Valley Association, and our Regional Trails Committee worked to craft a number of maps that highlight the tremendous trail assets we have in the region and identify key opportunities for trail connectivity. The products are an Interactive Online Regional Trail Map, a Regional Trail Map and Connectivity Assessment Report (see the high-resolution Regional Trail Map here), Regional Trail Master Spreadsheet, and a Regional Trail Map​s​ of Current and Proposed Trail Networks. ​ The online regional trail viewer may also be accessed through the Regional Map Viewer described above or on our Regional Trails Page.

We hope that this will highlight the incredible work of regional land trusts and conservation organizations, support tourism opportunities, and increase trail access for our residents.


Northwest Hills Council of Governments Region Map pdf

Housatonic Rail Road Map

New England Heritage Bikeway Map

Northwestern CT Transit District local bus service maps (Torrington, Winsted, Litchfield)

Housatonic River Overlay Zone Maps

Housatonic River Management Plan Maps

  • Corridor Boundaries
  • Land cover
  • Cultural resources
  • Natural resources
  • Recreational resources
  • Water resources

Other mapping resources

Northwest Conservation District-

  • Provides technical assistance and solutions to municipal land use commissions, land trusts, and individuals including environmental reviews, lower impact development, wetland soil identification, and open space and farmland preservation.
  • Provides GIS mapping and analysis services such as Natural Resource Planning and Inventories, Open Space Plans, Land Use Planning & Analysis, Suitability Analysis, Soils Mapping & Analysis, Land Development Potential, Parcel Data Management, Zoning Districts, Scenic/ Significant Vistas, Special Projects, etc.

Connecticut State Data Center

  • Find Census data for your community on housing, population projections, school enrollment, jobs, commute times, income, and much more.

CLEAR (UConn Center for Land Use Education and Research)

  • Watershed maps for each town
  • Downloadable GIS data including land cover, aerial photos
  • Interactive online mapping services
  • Connecticut’s Changing Landscape Website & Mapping Tool The University of Connecticut Center for Land Use Education and Research (CLEAR) has just released the next version of its Connecticut’s Changing Landscape project, which now charts changes to the face of Connecticut over a 21-year period, from 1985 to 2006. CLEAR’s updated and enhanced Connecticut’s Changing Landscape website offers information from the study in a range of ways, from data tables to charts to maps to interactive web mapping — all at the state, regional and town levels.

CT ECO (CT Environmental Conditions Online)

  • Download a variety of town maps in pdf format including soils, contours and orthophotos
  • Use the Simple Map Viewer is for viewing one natural resource theme at a time such as farmland soils, wetland soils, protected open space, natural diversity data base areas, and water quality classifications.
  • The Aerial Photo Viewer – is for viewing aerial photography available for Connecticut, certain regions in Connecticut, and along the Connecticut coastline and Connecticut River.
  • NEW 2016  aerial photography and elevation maps

Connecticut Department of Transportation

  •  Download a variety of maps on Title VI Demographic Mapping & Information; Traffic; Air Quality; District, Regional and Urban Maps; and Town Roads

Connecticut State Library

  • Links to historical maps including Sanborn Fire Insurance Maps (requires library card number) and topographic maps