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Annual Average Daily Traffic
A collection of layers maintained by the Traffic Monitoring Unit. -
Soils Drainage Class
Drainage class (natural)" refers to the frequency and duration of wet periods under conditions similar to those under which the soil formed. Alterations of the water regime by... -
Bulk Legislative Data Downloads
A website provided by the Connecticut General Assembly that provides bulk downloads of legislative data in multiple formats. -
Natural Diversity Database
See full Resource Data Guide here.Abstract: The Natural Diversity Database Areas is a 1:24,000-scale, polygon feature-based layer that represents general locations of... -
Environmental Justice 2025 Set
Environmental Justice 2025 Set is comprised of two layers: Environmental Justice Block Groups 2025 and Environmental Justice Distressed Municipality 2025. All Census and ACS... -
Broadband Adoption by Tract 2025
Broadband and Internet Access Dataset — Tract-Level SummaryBroadband Subscription DataTotal broadband subscriptions across all technologiesTotal Residential broadband... -
Shellfish Area Marina
Shellfish Area Classification Set: The Connecticut Department of Environmental Protection cooperated with the Department of Agriculture, Bureau of Aquaculture to publish the... -
Connecticut Senate Districts (2011 - 2020)
Connecticut Senate Districts is not intended for maps printed at map scales greater or more detailed than 1:100,000 scale (1 inch = 1.578 mile). -
Local Health Districts Status Maps
Included in the data set is :-Local Health Department-Planning Organization-Director of Health (DoH) Name- DoH title-DoH Degree-Doh Email-LHD Status (District, Part time, Full... -
Wildlife Action Plan Manage Conservation Opportunity 2025
The 2025 Connecticut State Wildlife Action Plan conservation opportunity areas (COAs) represent locations partners can conduct actions to benefit wildlife populations and... -
MetroCOG
Contours are lines of equal elevation. This is a contour feature layer for the state of Connecticut derived from the index contour in the 1' contour data set. All closed... -
Negative Net Shoreline Movement (meters)
Shorelines are continuously moving in response to winds, waves, tides, sediment supply, changes in relative sea level, and human activities. Shoreline changes are generally not... -
Reduced Transect Counts for Regional Averaging
Supplemental data for shoreline change analysis including reduced transects and offshore baselines. -
Offshore Baselines
Supplemental data for shoreline change analysis including reduced transects and offshore baselines. -
Subregional Basin Line
A standardized mapping of natural drainage basins in Connecticut was completed in 1981 by the Connecticut Department of Environmental Protection (DEP). This drainage basin... -
EPCRA Tier 2 Facilities
Submission of Tier II form is required under Section 312 of the Emergency Planning and Community Right-to-Know Act of 1986 (EPCRA). The purpose of this form is to provide state,... -
DEEP Fisheries Stream Survey Points
Fisheries Stream Survey Site includes points along streams which have been surveyed for a variety of characteristics relative to fish habitat. This datalayer includes stream... -
Cold Water Supporting Drainage Basin
Cold water habitat was determined using available fish and water temperature data collected by the Connecticut Department of Energy and Environmental Protection (CT DEEP)... -
WestCOG
Contours are lines of equal elevation. This is a contour feature layer for the state of Connecticut derived from the index contour in the 1' contour data set. All closed...
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