|CT 2012 Impervious Surface||Metadata||Download||Map Service, Map Service State Plane|
|CT 2016 Stormwater Impaired Waters (Rivers, Lakes, Estuaries)||Data Guide||Metadata||Map Service: CT2016 Impaired Rivers, CT2016 Impaired Lakes, CT2016 Impaired Estuary|
|CT DEEP Basins with 2012 Impervious Stats||Data Guide||Metadata||Download||Map Service: Impervious Cover by Watershed Basin|
|CT Towns with 2012 Impervious Stats||Data Guide||Metadata||Map Service: Impervious Cover by Town|
|MS4 Urbanized Area||Metadata||Map Service: Urbanized Area|
|MS4 Towns||Metadata||Map Service: MS4 Towns|
|CT 2012 Buildings||-||Download||Map Service: Buildings|
|CT 2012 Roads (polygon)||-||Download||Map Service: Roads|
|CT 2012 Other Impervious||-||Download||Map Service: Other Impervious|
|1||Buildings||Permanent structures larger than 800 square feet.
I. Buildings and structures and greenhouses >800 square feet.
II. Excludes temporary structures such as mobile storage units.
III. Include mobile homes, structures under construction.
IV. All buildings completed or under construction, contained in the imagery will be captured. Buildings will be delineated to the maximum degree possible from the imagery.
|2||Roads||Any vehicular cart way including, but not limited to alleyways, paved roadways, bridges and tunnels and private roads within commercial, industrial, institutional, and residential complexes.
I. Road to edge of pavement including gravel shoulder.
II. Gravel roads.
III. All transportation routes that are hard paved to loose gravel.
IV. Driveways are excluded from this class.
|3||Other Impervious||Driveways, parking lots, and impervious features that are not vehicular cart ways such as sidewalks.
I. All paved or heavily compacted areas not included in roads class.
II. Bare soil is generally not considered impervious even when it is in a driveway situation.
III. Included are parking lots, sidewalks, driveways, patios, swimming pools (in-ground and above-ground), pool decks, park walkways, concrete pads.
IV. Excluded are grass, water, forest when not covering impervious, wetlands, bare soil (even when compacted), railways, baseball fields, running tracks and green roofs.