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Lake Bathymetry Contours Lines
See full Data Guide here. Lake Bathymetry describes the water depth for selected reservoirs, lakes, ponds, and coves in Connecticut. It includes depth contours, also called... -
Connecticut State Parcel Layer 2023
The dataset has combined the Parcels and Computer-Assisted Mass Appraisal (CAMA) data for 2023 into a single dataset. This dataset is designed to make it easier for stakeholders... -
Coastal Area Polygon
Coastal Area & Boundary Polygon: The Coastal Area layer is a 1:24,000-scale, polygon feature-based layer that includes the land and waters that lie within the Coastal Area... -
Environmental Justice Block Groups 2024
Environmental Justice 2025 Set is comprised of two layers: Environmental Justice Block Groups 2024 and Environmental Justice Distressed Municipality 2025. All Census and ACS... -
Local Emergency Planning Committees (LEPC)
In May 1987, pursuant to Section 22a-601(b) of the Connecticut General Statutes (CGS), the State Emergency Response Commission (SERC) designated local planning districts by... -
Coastal Boundary Polygon
Coastal Area & Boundary Polygon: The Coastal Area layer is a 1:24,000-scale, polygon feature-based layer that includes the land and waters that lie within the Coastal Area... -
Quaternary Geology LIS Lacustrine Fan Deposits
Connecticut Quaternary Geology Long Island Submerged Marine Fluvial-Estuarine, Channel-Fill Deposits identifies early postglacial, channel-fill deposits submerged in Long Island... -
Eelgrass Beds 2002 Polygon
Eelgrass Beds 2002 Set: Field Verification of Eelgrass beds, located in the Long Island Sound, Eastern shore of Connecticut from Clinton Harbor to the Rhode Island State border,... -
305b Assessed River 2020
305b Assessed River, Lake, Estuary 2020: Connecticut 305b Assessed River 2020 is a 1:24,000-scale, line feature-based layer that includes rivers that have been assessed to... -
Eelgrass Beds Historic Points
Eelgrass Beds Historic Set: Historic Eelgrass Points is a 1:24,000-scale, point feature-based layer that depicts the locations of historic eelgrass beds (Zostera marina) in Long... -
CT Vicinity Town Polygon
Connecticut and Vicinity Town Boundary data are intended for geographic display of state, county and town (municipal) boundaries at statewide and regional levels. Use it to map... -
CQ7 Block Avail Xwalked
Broadband Availability Data — Block-Level SummaryWhat the dataset includesFor each Census block, the dataset provides:Location countsTotal broadband serviceable locationsNumber... -
Broadband Availability by Planning Region 2025
Broadband Availability Data — Planning Region-Level SummaryWhat the dataset includesLocation countsTotal broadband serviceable locationsNumber of providers Counts of unserved,... -
Shellfish Area Class Line
Shellfish Area Classification Set: The Connecticut Department of Environmental Protection cooperated with the Department of Agriculture, Bureau of Aquaculture to publish the... -
Coastal Area
The Coastal Area layer is a 1:24,000-scale, polygon feature-based layer that includes the land and waters that lie within the Coastal Area as defined by Connecticut General... -
Migratory Waterfowl
Migratory Waterfowl is a 1:24,000-scale, polygon feature-based layer that depicts the concentration areas of migratory waterfowl at specific locations within Connecticut. Paul... -
Shellfish
Shellfish polygons were digitized from hand drawn polygons representing hardclam, softclam, and oyster beds produced by the Department of Agriculture from their records in 1990... -
Eelgrass Beds 2009 Points
Eelgrass Beds 2009 Set: This data layer was created by the Conservation Management Institute, Virginia Tech University for the USFWS National Wetlands Inventory, Region 5. The... -
Glacial Sediment Thickness
Thickness of Glacial Sediment in Connecticut and Long Island Sound Set: The Thickness of Glacial Sediments in Connecticut and the Long Island Sound Basin layer contains... -
Eelgrass Beds 2012 Polygon
Eelgrass Beds 2012 Polygon : This data layer was created by the Conservation Management Institute, Virginia Tech University for the USFWS National Wetlands Inventory, Region 5....
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