CT Buildings

Dataset Description:  The CT Statewide GIS Services Lidar project required the planning, acquisition, processing, and creation of derivative products from lidar data collected at a nominal pulse spacing (NPS) of 0.35 meters. Coastal areas were collected to achieve a point density of at least 20 points per square meter (ppsm), while all other areas met or exceeded 14 ppsm. Project standards followed the U.S. Geological Survey National Geospatial Program Base Lidar Specification, Version 2023 rev. A.The dataset was produced using the horizontal datum/projection NAD83 (2011), State Plane Connecticut, U.S. Survey Feet, and the vertical datum NAVD88 (GEOID18), U.S. Survey Feet. Deliverables included Classified LAS 1.4 files tiled into 23,381 tiles measuring 2,500 ft by 2,500 ft, tiled intensity imagery, and tiled bare-earth DEMs—all using the same tiling scheme.Maximum Surface Height Raster and Swath Separation Image tiles 025645_se, 080655_ne, 085655_ne, 085655_nw, 090655_nw, 110660_se, and 135665_se were not provided because all lidar points within the corresponding LAS tiles were marked as withheld. LAS tile 110660_se consists entirely of water and contains no lidar returns; therefore, it is not included in the deliverables. 

                                            {
  "fn": "ctgisoffice",
  "@type": "vcard:Contact",
  "hasEmail": "mailto:opm.giso@ct.gov"
}
                                        

                                            [
  {
    "@type": "dcat:Distribution",
    "title": "ArcGIS Hub Dataset",
    "mediaType": "text/html",
    "downloadURL": "https://geodata.ct.gov/maps/ctmaps::ct-buildings"
  },
  {
    "@type": "dcat:Distribution",
    "title": "ArcGIS GeoService",
    "mediaType": "application/json",
    "downloadURL": "https://tiles.arcgis.com/tiles/3FL1kr7L4LvwA2Kb/arcgis/rest/services/CT_3D_Buildings/SceneServer"
  }
]
                                        

                                            [
  "2023",
  "connecticut",
  "ct gis office",
  "elevation data",
  "opm"
]
                                        

                                            {
  "name": "State of Connecticut",
  "@type": "org:Organization"
}
                                        

                                            [
  "geospatial"
]