Impervious Surface Land Connecticut 2023

This dataset contains statewide impervious surface vector features for the State of Connecticut. The dataset was developed from 2023 source imagery to provide a high-resolution, consistent geospatial representation of impervious land cover. The impervious surface component includes mapped features such as buildings, roads, driveways, parking areas, sidewalks, pavement, swimming pools, paved recreation surfaces, and bridges. Feature capture and attribution were performed according to defined class-specific interpretation and minimum mapping specifications. The dataset is intended to support statewide mapping, infrastructure planning, land cover assessment, hydrologic and stormwater analysis, emergency management, and other GIS-based applications. This dataset package contains three feature files. The Land file is a polygon dataset in which each feature contains the fields FID (unique identifier), Shape (geometry), and CateTitle (feature classification). CateTitle values and their definitions are all provided in the Entity and Attribute Information section of this metadata record Class Definition Road Edge of roadway, including curbs. In the case where roads overlap or where they are elevated from the ground, the elevated/overlapping surface(s) are classified as bridges, and the terrain surface is classified as road. Roads are greater than 8 feet wide and 50 feet long. Sidewalk A paved path for pedestrians, typically running parallel to a street. Private sidewalks include sidewalks outside the right of way of public property, for example, a sidewalk that leads from the edge of a driveway up to the front door of a house. Public sidewalks are defined as those that typically reside within the public right of way, parallel to a street. Sidewalks take priority to driveway, or other paved surface, in the landcover feature classifications. Sidewalks are greater than 3 feet wide and 10 feet long. Pavement Any paved surface that does not fall into the specific impervious feature classifications. As with other features, must be greater than 100 square feet. Driveway Paved surface from edge of curb to structure. In cases where sidewalk is overlapping, sidewalk takes priority. Greater than 8 feet wide and 10 feet long. Parking Paved surface with visible parking lanes. Greater than 500 square feet. Building The geometric footprint of each building greater than 100 square feet. Buildings are derived from the roofline and the wall facade to correctly interpret where a structures foundation meets the ground. Buildings are based on the 2D lidar-derived building footprints, a deliverable of the 2023 state flight. Bridge Driving surfaces that are elevated from terrain level. Does not include walking paths. Bridges are greater than 8 feet wide and 50 feet long. Swimming Pool Sub-surface open water on residential or commercial property that is clearly not a natural body of water. Swimming pools must be greater than 100 square feet Sports Fields Paved Any paved recreational area such as tennis courts and running tracks. Sports Fields Unpaved Any unpaved recreational area such as baseball grounds and soccer fields. Agency: OPM Authoritativeness: Unknown Sensitivity: Public Usage: Public Use Quality: High Quality Created Data: 01/2026 Update Frequency (estimated): Unknown Last Updated: unknown