Imagery & Data

Statewide Mosaic of 2004 Black and White Digital Orthophotos

A statewide mosaic of 0.8 foot (approximately 0.24 meter) resolution orthophotos can be viewed on line. The compressed statewide mosaic (special thanks to George Davis, ERMapper) is being served using ERMapper's Image Web Server technology. The data can be viewed in a web browser or connected to in ArcMap or ArcView. The data are results of a collaborative effort between the Connecticut Departments of Transportation, Environmental Protection and Public Safety, the Federal Highway Administration and UConn's Center for Land Use Education and Research.

Aerial High Resolution True Color Coastal Imagery (ADS40)

A mosaic covering Connecticut's coastal communities of September 2004, 0.5 meter (approximately 1.6 foot) resolution color airborne imagery can be viewed online. The compressed mosaic is being served using ERMapper's Image Web Server technology. The data can be viewed in a web browser or connected to in ArcMap or ArcView. The data were acquired through a coastal remote sensing project funded by the NOAA Coastal Services Center.

Aerial High Resolution False Color Coastal Imagery (ADS40)

A mosaic covering Connecticut's coastal communities of September 2004, 0.5 meter (approximately 1.6 foot) resolution color airborne imagery can be viewed online. The compressed mosaic is being served using ERMapper's Image Web Server technology. The data can be viewed in a web browser or connected to in ArcMap or ArcView. The data were acquired through a coastal remote sensing project funded by the NOAA Coastal Services Center.

Connecticut land cover from 1985, 1990, 1995 and 2002

Image and shapefile formats packaged by varying geographic units including the project area (Connecticut and then some), by county and by municipality.

--> Go to the Connecticut's Changing landscape website.

Data Packaged for Connecticut's Coastal Municipalities

Coastal datasets including submerged aquatic vegetation, tidal wetlands and preliminary migratory fish runs together with Connecticut DEP shapefiles. Download a map package for viewing, manipulating and printing in ESRI's free GIS software, ArcReader.

--> Go to NEMO's Focus on the Coast website.

Impervious Surface Analysis Tool (ISAT) Coefficients

The Impervious Surface Analysis Tool (ISAT) is a GIS extension that estimates impervious surface area using land cover and coefficients. Each land cover dataset requires a specific set of coefficients. Coefficients were developed for use with the 2002 land cover data for Connecticut.

--> Go to Impervious section of the NEMO website.

Connecticut Watershed Maps

Way back in the early days of NEMO, a map for each of Connecticut's 169 towns was created showing the watersheds that make up each town. Although the maps are not cutting edge and not even new, they are still quite useful. Get yours below.

--> Go to Connecticut Watershed Maps.

Connecticut LiDAR-based Digital Elevation Data

This statewide dataset consists of LiDAR-based interpolated gridded elevation provided on a quadrangle basis, over-edged by 500-feet. Elevation data are at a 10-foot horizontal by 1-foot vertical resolution. They are projected in Connecticut State Plane, NAD83, Feet and are served as GeoTIFFs (TIF and TFW). Mutliple quadrangles can be dowloaded and mosaicked into regional datasets with most GIS software. This is a Beta product and intended for research and demonstration puposes.

--> Go to elevation data website.

The Dynamics of Global Urban Expansion

Conducted as part of a team that included New York University and Williams College, CLEAR researchers looked at urban extent and expansion over a ten-year period for 120 cities with a population over 100,000, worldwide. This study is providing insight into the relationships of population growth and urban expansion in developing countries.

--> Go to Global Urban Expansion website.

Connecticut Land Cover

Includes land cover for 1985, 1990, 1995 and 2002, 1985-2002 land cover change, roads and regional basins. Visit Connecticut's Changing Landscape website and click on Interactive Map.

--> Go to the Connecticut's Changing landscape website.

Coastal Connecticut Data

Vector data (including coastal resources) and land cover for Connecticut's coastal municipalities.

--> Go to NEMO's Focus on the Coast website.

Impervious Surfaces for Long Island Sound

Impervious surface image data for Long Island Sound (includes a portion of New York City and northern Long Island) for 1985, 1990, 1995 and 2002 including change.

--> Go to Impervious section of the NEMO website.