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See full Data Guide here. Surface Water Quality Classifications Set: This dataset is a line and a polygon feature-based layer compiled at 1:24,000 scale that includes water quality...
Search relevance: 1.00 | Views last month: 16 | Catalog Last Checked: August 02, 2026 at 05:29 PM -
See full Data Guide here. Surface Water Quality Classifications Set: This dataset is a line and a polygon feature-based layer compiled at 1:24,000 scale that includes water quality...
Search relevance: 1.00 | Views last month: 9 | Catalog Last Checked: August 02, 2026 at 05:28 PM -
Connecticut Quaternary Geology Long Island Submerged Marine Fluvial-Estuarine, Channel-Fill Deposits identifies early postglacial, channel-fill deposits submerged in Long Island Sound and Fishers...
Search relevance: 1.00 | Views last month: 9 | Catalog Last Checked: August 02, 2026 at 05:28 PM -
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 Statute (C.G.S.)...
Search relevance: 1.00 | Views last month: 9 | Catalog Last Checked: August 02, 2026 at 05:27 PM -
Tidal Wetlands 1970's represents the historic regulatory tidal wetland boundaries produced during the early 1970's by the State of Connecticut Department of Agriculture and Natural Resources,...
Search relevance: 1.00 | Views last month: 8 | Catalog Last Checked: August 02, 2026 at 05:28 PM -
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 as defined by...
Search relevance: 1.00 | Views last month: 8 | Catalog Last Checked: August 02, 2026 at 05:27 PM -
See full Data Guide here. Surface Water Quality Classifications Set: This dataset is a line and a polygon feature-based layer compiled at 1:24,000 scale that includes water quality...
Search relevance: 1.00 | Views last month: 8 | Catalog Last Checked: August 02, 2026 at 05:26 PM -
Connecticut Quaternary Geology Long Island Submerged Marine Fluvial-Estuarine, Channel-Fill Deposits identifies early postglacial, channel-fill deposits submerged in Long Island Sound and Fishers...
Search relevance: 1.00 | Views last month: 7 | Catalog Last Checked: August 02, 2026 at 05:28 PM -
See full Data Guide here. This data layer includes the information portrayed on the Surficial Materials Map of Connecticut (Stone, J.R., Schafer, J.P., London, E.H. and Thompson, W.B., 1992, U.S....
Search relevance: 1.00 | Views last month: 7 | Catalog Last Checked: August 02, 2026 at 05:27 PM -
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 as defined by...
Search relevance: 1.00 | Views last month: 7 | Catalog Last Checked: August 02, 2026 at 05:27 PM -
Environmental Justice 2023 Set is comprised of two layers: Environmental Justice Block Groups 2023 and Environmental Justice Distressed Municipality 2023. All Census and ACS data used in the...
Search relevance: 1.00 | Views last month: 7 | Catalog Last Checked: August 02, 2026 at 05:29 PM -
The Long Island Sound Study developed these digital data from 1:100,000-scale National Oceanic & Atmospheric Administration (NOAA) and United States Geological Survey (USGS) maps as a general...
Search relevance: 1.00 | Views last month: 7 | Catalog Last Checked: August 02, 2026 at 05:26 PM -
See full Data Guide here. Quaternary Geology Feature Set is 1:24,000-scale data that illustrates the geologic features formed in Connecticut during the Quaternary Period, which spans from 2.588 ±...
Search relevance: 1.00 | Views last month: 7 | Catalog Last Checked: August 02, 2026 at 05:26 PM -
Subsurface sewage disposal systems (SSDS) consist of a house sewer, a septic tank followed by a leaching system, any necessary pumps and siphons, and a groundwater control system upon which the...
Search relevance: 1.00 | Views last month: 6 | Catalog Last Checked: August 02, 2026 at 05:28 PM -
See full Data Guide here. This data layer includes the information portrayed on the Surficial Materials Map of Connecticut (Stone, J.R., Schafer, J.P., London, E.H. and Thompson, W.B., 1992, U.S....
Search relevance: 1.00 | Views last month: 5 | Catalog Last Checked: August 02, 2026 at 05:28 PM -
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 Merola, former DEP...
Search relevance: 1.00 | Views last month: 5 | Catalog Last Checked: August 02, 2026 at 05:27 PM -
Northeastern United States County Boundary data are intended for geographic display of state and county boundaries at statewide and regional levels. Use it to map and label counties on a map....
Search relevance: 1.00 | Views last month: 5 | Catalog Last Checked: August 02, 2026 at 05:26 PM -
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, tribal, and local...
Search relevance: 1.00 | Views last month: 5 | Catalog Last Checked: August 02, 2026 at 05:29 PM -
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 interpretive polygon data...
Search relevance: 1.00 | Views last month: 5 | Catalog Last Checked: August 02, 2026 at 05:27 PM -
Connecticut Historic Shoreline Wetlands: 1880s NOS T-Sheet Shoreline Features is a 1:10,000-scale, line feature-based layer that includes information depicting historic shoreline features and...
Search relevance: 1.00 | Views last month: 5 | Catalog Last Checked: August 02, 2026 at 05:28 PM
