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Environment and Natural Resources
External Link
This viewer is available on CT ECO from UConn CLEAR. The viewer contains Connecticut's statewide land cover in an easy-to-explore tool.
 
Description
The Connecticut Land Cover Viewer contains seven dates of land cover, between 1985 and 2015 including change to and change from layers. These layers are in the bottom half of the layer list and start with a year, such as 1985 Land Cover. 

For each major land cover class (forest, ag field, developed, turf & grass) there are summary stats by town shown as layers in the viewer with color ramps. The darker the color, the higher the presence. Summary stats include change by town as well, where more change is shown with darker colors. These layers are in the top half of the viewer. 

The viewer also contains forest fragmentation layers from 1985 and 2015. 

More about land cover on the CLEAR website, including Number and Charts data visualizations. 

Use
To use the viewer, use the Layer List (upper right)  to turn on and off layers (remember to turn OFF the ones above on the list or they will hide layers below) to compare and explore the area. The swipe tool (lower left) is a fun way to compare two datasets. Be sure at least two items are checked on in the layer list and use the swipe tool to compare. Refer to Viewer Help for more details and tips.

Tips
- compare dates of land cover by turning them on and off in the layer list, or using they swipe tool
- for any year of land cover (the layers are called 1985 Land Cover, 1990 Land Cover, etc.), click on the little arrow to the left in the table of contents to see layers that show just main land cover classes. This is a good way to explore just forest land cover or just developed land cover - you get the point!  
- land cover from satellite imagery at this resolution can look "fuzzy" compared to high resolution datasets. It is coarse but is an excellent, and perhaps the only way, to look at change over 30 years. 
- visit the Land Cover FAQs for more information. 

Tags ct ct deep ct eco cteco changing landscape and 9 more
Updated
January 24 2025
Views
330

Environment and Natural Resources
Filtered View
The Toxics Release Inventory (TRI) tracks the management of certain toxic chemicals that may pose a threat to human health and the environment. Certain industrial facilities in the U.S. must report annually how much of each chemical is recycled, combusted for energy recovery, treated for destruction, and disposed of or otherwise released on- and off-site. This information is collectively referred to as production-related waste managed.
Tags release toxic tri
API Docs
Updated
August 8 2024
Views
276

Environment and Natural Resources
Filtered View
The Toxics Release Inventory (TRI) tracks the management of certain toxic chemicals that may pose a threat to human health and the environment. Certain industrial facilities in the U.S. must report annually how much of each chemical is recycled, combusted for energy recovery, treated for destruction, and disposed of or otherwise released on- and off-site. This information is collectively referred to as production-related waste managed.
Tags release toxic tri
API Docs
Updated
August 8 2024
Views
287

Environment and Natural Resources
External Link
This viewer is published by UConn CLEAR and is made available on CTECO. This land cover dataset is part of the National Oceanic and Atmospheric Associate (NOAA) Coastal Change Analysis Program (C-CAP). The thematic raster has 1 meter pixels (high resolution!) and multiple classes that represent different land covers. 

2016 High Resolution Land Cover Dataset
Extent: Connecticut
Classes: 20+ classes include impervious, cultivated, pasture/hay, grassland, forest classes, wetland classes, water, and more. See Land Cover Classes for a complete list and detailed descriptions. 
Dates: Land cover created from 2016 aerial imagery
Pixel Resolution: 1 meter 
Projection: CT State Plane NAD 83 feet (EPSG 2234)

More Information

Credit and Fund
Tags c-cap clear ct eco cteco connecticut and 6 more
Updated
January 24 2025
Views
185

Environment and Natural Resources
External Link
This viewer is available on CT ECO from UConn CLEAR. The viewer contains the lower Long Island Sound Watershed's Changing Landscape land cover in an easy-to-explore tool.

Description
The Lower Long Island Sound (LIS) Land Cover Viewer contains seven dates of land cover, between 1985 and 2015, including change to and change from layers. The land cover layers are in the bottom half of the layer list and start with a year, such as 1985 Land Cover. 

For each major land cover class (forest, ag field, developed, turf & grass) there are summary stats by HUC12 watershed shown as layers in the viewer with color ramps. The darker the color, the higher the presence. Summary stats include change by watershed as well, where more change is shown with darker colors. These layers are in the top half of the viewer. 


The viewer also contains estimated percent impervious surface layers from 1985, 2015, and change, along with riparian area land cover from 1985, 2015, and 1985-2015 change. 

More about land cover on the CLEAR website, including Number and Charts data visualizations. 

Use
To use the viewer, use the Layer List (upper right)  to turn on and off layers (remember to turn OFF the ones above on the list or they will hide layers below) to compare and explore the area. The swipe tool (lower left) is a fun way to compare two datasets. Be sure at least two items are checked on in the layer list and use the swipe tool to compare. Refer to Viewer Help for more details and tips.

Tips
- compare dates of land cover by turning them on and off in the layer list, or using they swipe tool

- for any year of land cover (the layers are called 1985 Land Cover, 1990 Land Cover, etc.), click on the little arrow to the left in the table of contents to see layers that show just main land cover classes. This is a good way to explore just forest land cover or just developed land cover - you get the point!  

- land cover from satellite imagery at this resolution can look "fuzzy" compared to high resolution datasets. It is coarse but is an excellent, and perhaps the only way, to look at change over 30 years. 

- visit the Land Cover FAQs for more information.


Tags ct ct deep ct eco cteco changing landscape and 9 more
Updated
January 24 2025
Views
178

Environment and Natural Resources
Dataset
Formal Enforcement Case Summaries between 1999-2021(Sep. 2021)
Formal enforcement summaries provide a brief description of violations, civil penalties and/or supplemental environmental projects, as appropriate, and a link to the enforcement document.
In the past, DEEP has included administrative consent orders when providing enforcement summaries. Since 2019, DEEP has included the following formal enforcement actions in addition to consent orders: cease and desist orders, unilateral orders, and stipulated judgments. Since 2022, DEEP lists all formal enforcement actions, including consent orders, unilateral orders (includes cease and desist and red tags), penalty notices, stipulated judgements, asset forfeitures, contempt orders, federal consent decrees, federal court orders, settlement agreements, and state court orders on the CT Open Data Portal. Use filters such as town, date, or program for reviewing the data.
Red Tags orders are administered by our DEEP UST Enforcement and can be found separately on the CT Open Data Portal. In the CT Open Data Portal, go to Underground Storage Tanks (USTs) - Enforcement Summary, https://data.ct.gov/Environment-and-Natural-Resources/Underground-Storage-Tanks-USTs-Enforcement-Summary/sfgx-68fy, select view data and filter by type.
For further information on a formal enforcement action, please contact the Office of Planning and Program Development (OPPD) at DEEP.OPPD@ct.gov.
Tags consent orders enforcement summaries
API Docs
Updated
September 5 2023
Views
247

Environment and Natural Resources
External Link
This viewer is available through CT ECO, a partnership between CT DEEP and UConn CLEAR.

Description
The Aerial Imagery Viewer contains all of Connecticut’s statewide digital aerial imagery plus some. The collection includes black and white, color, and infrared imagery going as far back as 1934 with varying pixel resolutions (up to 3 inch!) and funded by different regional, state, and federal agencies. Refer to the CT Digital Imagery page for descriptions of the datasets available on CT ECO and in the Aerial Imagery Viewer.


Use
To use the viewer, zoom in and then use the Layer List (upper right)  to turn on and off layers (remember to turn OFF the ones above on the list or they will hide layers below) to compare and explore the area. The swipe tool (lower left) is a fun way to compare two datasets. Be sure at least two items are checked on in the layer list and use the swipe tool to compare. Refer to Viewer Help for more details and tips.

Tips
- smaller pixels sizes mean more spatial detail
- leaf off imagery has a lot of brown and provides better visibility off features that exist under tree canopies
- near infrared layers are displayed so that healthy green vegetation is the brightest red
- near infrared layers provide excellent contrast between vegetated and non-vegetated features
Tags aerial clear connecticut ct ct deep and 7 more
Updated
January 24 2025
Views
135

Environment and Natural Resources
External Link

Where to Fish For Application

New to the state? New to fishing? Want to find a new place
to fish? Have you always wanted to catch a Black Crappie but don’t know where
to go? Well then, check out CT DEEP Fisheries Division’s “Where
to fish for…” application. 

This simple interactive map, co-developed by CT DEEP GIS and the
Fisheries Division is intended to augment our “Fish with CARE” learn to fish
events. At the events, the most common question by far was, “Where can I fish
near me…”. This map provides the ideal solution for both novice and experienced
anglers alike. The data powering the map was collected over the past decade
through routine monitoring by the Fisheries Division of public lakes, ponds and
the CT River. This new map joins two previously developed interactive maps, one
for Rivers/Streams (Interactive Trout Stocking Map) and one for our shoreline
access, charter boats, and tackle shops (Saltwater Resources map) also help to get people onto the
fish. 

This video
provides a quick tutorial on some of the key features.

Tags ct deep connecticut deep fish fisheries and 6 more
Updated
January 24 2025
Views
101