Mapping Tools
Free Online Mapping Tools
Thames River Basin Partnership Mapping Links
Connecticut Environmental Conditions On-line includes maps and geospatial data for everyone
OLIVER – The MassGIS Online Data Viewer
CLEAR Local Watershed Assessment Tool was developed by the Center for Land-use Education and Research. The program uses a metric, called the Combined Condition Index (CCI), to describe the probable health of a watershed based on the land cover within the watershed. Use this link to access the online mapping tool and a storymap and tutorial on how to use the tool.
TLGV Conservation Mega Mapper This map viewer contains the most comprehensive “protected open space” data layer for The Last Green Valley National Heritage Corridor and surrounding communities in eastern Connecticut and south-central Massachusetts. It also contains data layers for important natural resource attributes such as watersheds and biodiversity, plus socioeconomic indicators including distressed municipalities and environmental justice screening tools.
CT Environmental Justice Communities Map Viewer (Updated in 2022) A map application demonstrating muncipalities on the Connecticut Department of Economic and Community Development (DECD) list of distressed municipalities or in a defined census block to be considered under section 22a-20a of the General Statutes and the Environmental Justice Policy.
MA Environmental Justice Communities Map Viewer (Updated in 2022) This map is based on US Census Bureau data released in October 2021 and March 2022, and was updated on November 12, 2022.
UCONN Map and Geographic Information Center (MAGIC)
MAGIC in collaboration with the Connecticut Department of Energy and Environmental Protection (CT DEEP) has developed a series of historical aerial photography indexes to assist users with locating aerial photography for an area of interest in Connecticut.
The regional council of governments GIS service includes parcel data along with some natural resource layers.
• Southeast Connecticut Council of Governments GIS
• Northeast Connecticut Council of Governments GIS
• Capital Region Council of Governments GIS
USDA Web Soil Survey
Web Soil Survey (WSS) provides soil data and information produced by the National Cooperative Soil Survey. It is operated by the USDA Natural Resources Conservation Service (NRCS) and provides access to the largest natural resource information system in the world.