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Surface Water Quality Polygon
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... -
305b Assessed 2012 River, Lake, Estuary Set
305b Assessed 2012 River, Lake, Estuary set: Connecticut 305b Assessed River 2012 is a 1:24,000-scale, line feature-based layer that includes rivers that have been assessed to... -
Shellfish Area Class Poly
Shellfish Area Classification Set: The Connecticut Department of Environmental Protection cooperated with the Department of Agriculture, Bureau of Aquaculture to publish the... -
LIS Dredged Material Disposal Sites
LIS Dredged Material Disposal Sites is a polygon feature-based layer that depicts the official locations of the four active (currently used) sites for depositing sediments... -
Sewer Service Area 1998
Connecticut Sewer Service Area is 1:24,000-scale, polygon feature-based data that depict sanitary waste water sewer service areas in Connecticut. Most if not all homes and... -
Shellfish Area Classification Set
Shellfish Area Classification Set: The Connecticut Department of Environmental Protection cooperated with the Department of Agriculture, Bureau of Aquaculture to publish the... -
305b Assessed Estuary 2016
305b Assessed 2016 River Lake Estuary Bed: Connecticut 305b Assessed River 2016 is a 1:24,000-scale, line feature-based layer that includes rivers that have been assessed to... -
Cases Filed 2013 - Archived
Total Cases Filed with the Department of City Planning for the Year 2013. -
Wellhead Protection Areas - Adjacent State
See full Data Guide here. Aquifer Protection Areas Set is a 1:24,000-scale, polygon feature-based layer that includes all Preliminary (Level B) and Final (Level A) Aquifer... -
305b Assessed 2014 Estuary
305b Assessed 2014 River Lake Estuary Set: Connecticut 305b Assessed River 2014 is a 1:24,000-scale, line feature-based layer that includes rivers that have been assessed to... -
DWW Swales
A polygon feature class showing DWW Swales. It also provides information about its exact location, owner, and role. Swales (biofiltration, bioretention,... -
305b Assessed 2006 Lake
305b Assessed 2006 River, Lake, Estuary Set: Connecticut 305b Assessed River 2006 is a 1:24,000-scale, line feature-based layer that includes rivers that have been assessed to... -
Fisheries Management Area Lines
Fisheries Management Areas Set: CT DEEP Fisheries Management Area Polygon Features is 1:24,000-scale data that identifes fisheries management areas for the Connecticut... -
305b Assessed 2008 Estuary
305b Assessed 2008 River, Lake, Estuary Set: Connecticut 305b Assessed River 2008 is a 1:24,000-scale, line feature-based layer that includes rivers that have been assessed to... -
305b Assessed 2008 River, Lake, Estuary Set
305b Assessed 2008 River, Lake, Estuary Set: Connecticut 305b Assessed River 2008 is a 1:24,000-scale, line feature-based layer that includes rivers that have been assessed to... -
Impaired Lake 2020
Connecticut 303(d) Impaired Waters 2020 is a subset of Connecticut 305(b) Assessed Waters 2020. If any one of the assigned designated uses is categorized as NOT Supporting, the... -
305b Assessed 2006 River, Lake, Estuary Set
305b Assessed 2006 River, Lake, Estuary Set: Connecticut 305b Assessed River 2006 is a 1:24,000-scale, line feature-based layer that includes rivers that have been assessed to... -
305b Assessed Lake 2018
305b Assessed 2018 River Lake Estuary Set: Connecticut 305b Assessed Estuary 2018 is a 1:24,000-scale, polygon feature-based layer that includes estuaries that have been... -
Fisheries Management Area Lines
Fisheries Management Areas Set: CT DEEP Fisheries Management Area Polygon Features is 1:24,000-scale data that identifes fisheries management areas for the Connecticut... -
Environmental Sensitivity Index 2002 Lines
Environmental Sensitivity Index 2002 Set: This data set contains vector lines representing the shoreline and coastal habitats of Connecticut classified according to the...