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snippet:
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This MD_Western_2021_D21 project called for the planning, acquisition, processing, and derivative products of LiDAR data to be collected at an aggregate nominal pulse spacing (ANPS) of 0.71 meters (2ppsm). Project specifications are based on the U.S. Geological Survey National Geospatial Program Base LiDAR Specification, Version 2.1. The data was developed based on a horizontal projection/datum of NAD83 (2011), UTM17N, meters and vertical datum of NAVD88 (GEOID18), meters. LiDAR data was delivered as processed Classified LAS 1.4 files, formatted to individual 1500 m tiles, as tiled Intensity Imagery, and as tiled bare earth DEMs; all tiled to the same 1500 x 1500 m schema.
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summary:
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This MD_Western_2021_D21 project called for the planning, acquisition, processing, and derivative products of LiDAR data to be collected at an aggregate nominal pulse spacing (ANPS) of 0.71 meters (2ppsm). Project specifications are based on the U.S. Geological Survey National Geospatial Program Base LiDAR Specification, Version 2.1. The data was developed based on a horizontal projection/datum of NAD83 (2011), UTM17N, meters and vertical datum of NAVD88 (GEOID18), meters. LiDAR data was delivered as processed Classified LAS 1.4 files, formatted to individual 1500 m tiles, as tiled Intensity Imagery, and as tiled bare earth DEMs; all tiled to the same 1500 x 1500 m schema.
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accessInformation:
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U.S. Geolocial Survey |
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thumbnail:
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maxScale:
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18055.954822 |
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typeKeywords:
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["Data","Service","Image Service","ArcGIS Server"] |
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description:
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USGS Contract No. G17PC00015 CONTRACTOR: Fugro Geospatial, Inc. SUBCONTRACTOR: Terrasurv, Inc. Ground control and checkpoints collected by Terrasurv, Inc. All processing was completed by the prime contractor. DEM Raster File Type = GeoTIFF Bit Depth/Pixel Type = 32-bit float Raster Cell Size = 1 meter Interpolation or Resampling Technique = Triangulated Irregular Network (TIN) Network Required Vertical Accuracy = 19.6 cm NVA.
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licenseInfo:
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None. However, users should be aware that temporal changes may have occurred since this dataset was collected and that some parts of these data may no longer represent actual surface conditions. Users should not use these data for critical applications without a full awareness of its limitations. Any conclusions drawn from the analysis of this information are not the responsiblity of the U.S. Geological Survey of its partners. Acknowledgement of the U.S. Geological Survey would be appreciate for products derived from these data. |
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catalogPath:
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title:
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MD_frederick_hillshade_m |
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type:
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Image Service |
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url:
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https://lidar.geodata.md.gov/imap/admin |
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tags:
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["United States of America","Maryland","Frederick","LiDAR","Elevation","DEM","LAS"] |
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culture:
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en-US |
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name:
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MD_frederick_hillshade_m |
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guid:
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minScale:
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3.6978595474472E7 |
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spatialReference:
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WGS_1984_Web_Mercator_Auxiliary_Sphere |