{
  "type": "Collection",
  "id": "DigitalCoast_DAV:id_8970",
  "stac_version": "1.1.0",
  "description": "Geographic Extent: Partial coverage of six counties in New Hampshire and Maine, covering approximately 3,276 total square miles.\nDataset Description: The Umbagog NH/ME 2016 LiDAR project called for the planning, acquisition, processing, and derivative products of LiDAR data to be collected at a nominal pulse spacing (NPS) of 0.7 meters for the New Hampshire, Maine, and FEMA R1 (MOD1) areas of interest. The White Mountain National Forest NH/ME areas of interest used LiDAR collected at 0.57 meters NPS, with the MOD2 WMNF add on collected at 0.35 NPS.\n\nProject specifications are based on the U.S. Geological Survey National Geospatial Program Base LiDAR Specification, Version 1.2. The data for counties in the AOI were developed based on a horizontal projection/datum of NAD83 (2011), UTM Zone 19, meters and vertical datum of NAVD88 (GEOID12B), meters. LiDAR data were delivered as flightline-extent unclassified LAS swaths, as processed Classified LAS 1.4 files formatted to 3,465 individual 1,500-meter x 1,500-meter tiles, along with 33 individual 2,000-meter x 2,000-meter tiles for the MOD2 WMNF add on area of interest, as tiled 1-meter intensity imagery in GeoTIFF format, and as tiled 1-meter hydro-flattened bare earth DEMs in GeoTIFF format; all tiled to the same schema. Continuous breaklines were produced in Esri file geodatabase format. The 557 individual 1,500-meter x 1,500-meter tiles constituting the MOD1 area of interest were delivered previously and will be redelivered after USGS-mandated revisions are complete.\n\nGround Conditions: LiDAR was collected from spring of 2016 to spring of 2018, while no snow was on the ground and rivers were at or below normal levels. In order to post process the LiDAR data to meet task order specifications and meet ASPRS vertical accuracy guidelines, Quantum Spatial, Inc. utilized a total of 68 ground control points that were used to calibrate the LiDAR to known ground locations established throughout the project area. An additional 165 independent accuracy checkpoints, 95 in Bare Earth and Urban landcovers (95 NVA points), 70 in Tall Weeds categories (70 VVA points), were used to assess the vertical accuracy of the data. These checkpoints were not used to calibrate or post process the data.\n\nThe NOAA Office for Coastal Management (OCM) downloaded this data set from this USGS site:\nftp://rockyftp.cr.usgs.gov/vdelivery/Datasets/Staged/Elevation/LPC/Projects/\n\nThe blocks downloaded were:\nUSGS_LPC_ME_Umbagog_2016_LAS_2019/ Number of files: 563\nUSGS_LPC_NH_Umbagog_2016_LAS_2019/ Number of files: 3404\nUSGS_LPC_NH_Umbagog_QL1_2016_LAS_2019/ Number of files: 283\n\nThese files were processed to the Data Access Viewer (DAV) and https. The total number of files downloaded and processed was 4250.\n\nHydro breaklines are also available. These data are available for download at the link provided in the URL section of this metadata record. Please note that these products have not been reviewed by the NOAA Office for Coastal Management (OCM) and any conclusions drawn from the analysis of this information are not the responsibility of NOAA or OCM.",
  "links": [
    {
      "rel": "root",
      "href": "./collection.json",
      "type": "application/json",
      "title": "2016 - 2018 USGS Lidar: Umbagog (ME, NH)"
    },
    {
      "rel": "self",
      "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/8970/stac/collection.json",
      "type": "application/json"
    },
    {
      "rel": "child",
      "href": "./nh/collection.json",
      "type": "application/json"
    },
    {
      "rel": "child",
      "href": "./nh_ql1/collection.json",
      "type": "application/json"
    },
    {
      "rel": "child",
      "href": "./me/collection.json",
      "type": "application/json"
    }
  ],
  "stac_extensions": [
    "https://stac-extensions.github.io/classification/v2.0.0/schema.json"
  ],
  "classification:classes": [
    {
      "value": 1,
      "name": "Unclassified",
      "description": "Unclassified"
    },
    {
      "value": 2,
      "name": "Ground",
      "description": "Ground"
    },
    {
      "value": 7,
      "name": "Low_Point__noise_",
      "description": "Low Point (noise)"
    },
    {
      "value": 9,
      "name": "Water",
      "description": "Water"
    },
    {
      "value": 10,
      "name": "Ignored_Ground__near_breakline_",
      "description": "Ignored Ground (near breakline)"
    },
    {
      "value": 17,
      "name": "Bridge_Deck",
      "description": "Bridge Deck"
    },
    {
      "value": 18,
      "name": "High_Noise",
      "description": "High Noise"
    }
  ],
  "title": "2016 - 2018 USGS Lidar: Umbagog (ME, NH)",
  "extent": {
    "spatial": {
      "bbox": [
        [
          -71.90129514415709,
          43.805680857201516,
          -68.01810048010366,
          46.200312549656125
        ]
      ]
    },
    "temporal": {
      "interval": [
        [
          "2016-04-10T16:23:01Z",
          "2016-04-10T19:48:17Z"
        ]
      ]
    }
  },
  "license": "CC-BY-1.0"
}