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snippet:
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Classified LAS files are used to show the manually reviewed bare earth surface. This allows the user to create Intensity Images, Breaklines and Raster DEM. The... |
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summary:
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Classified LAS files are used to show the manually reviewed bare earth surface. This allows the user to create Intensity Images, Breaklines and Raster DEM. The... |
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accessInformation:
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Quantum Spatial, Inc. flew the LiDAR and processed the data. |
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thumbnail:
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thumbnail/thumbnail.png |
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typeKeywords:
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["Data","Service","Image Service","ArcGIS Server"] |
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description:
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Geographic Extent: SANDY_Restoration_VA_MD_DC_QL2 Area of Interest covers approximately 2,002 square miles. Lot #5 contains the full project area Dataset Description: The SANDY_Restoration_VA_MD_DC_QL2 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 meter. Project specifications are based on the U.S. Geological Survey National Geospatial Program Base LIDAR Specification, Version 1. The data was developed based on a horizontal projection/datum of UTM Zone 18 North, NAD83, meters and vertical datum of NAVD1988 (GEOID12A), meters. LiDAR data was delivered in RAW flight line swath format, processed to create Classified LAS 1.2 Files formatted to 2283 individual 1500m x 1500m tiles, and corresponding Intensity Images and Bare Earth DEMs tiled to the same 1500m x 1500m schema, and Breaklines in ESRI Shapefile format. The data was then converted to a horizontal projection/datum of NAD83 Maryland State Plane Coordinate System, Feet. LiDAR was delivered in Classified LAS 1.2 Files formatted to 1927 individual 4000' x 6000' tiles, and corresponding Intensity Images and Bare Earth DEMs tiled to the same 4000' x 6000' schema, and Breaklines in ESRI Shapefile format. Ground Conditions: LiDAR was collected in Winter 2014, 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, Quantum Spatial established a total of 59 QA control points and 95 Land Cover control points that were used to calibrate the LIDAR to known ground locations established throughout the SANDY_Restoration_VA_MD_DC_QL2 project area. |
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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 it's limitations. Acknowledgement of the U.S. Geological Survey would be appreciated for products derived from these data. |
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catalogPath:
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title:
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MD_stmarys_hillshade_m |
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type:
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Image Service |
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url:
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https://localhost.mdgov.maryland.gov:6443/arcgis/services/StMarys/MD_stmarys_hillshade_m/ImageServer |
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tags:
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["Fairfax County","Lidar","model","Saint Marys County","Prince Georges County","DC","Virginia","Falls Church County","remote sensing","LAS Point Cloud","Washington","D.C.","Manassas Park City","Washington","Elevation data","Hydrology","Arlington County","Charles County","Maryland"] |
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culture:
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en-US |
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name:
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MD_stmarys_hillshade_m |
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guid:
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spatialReference:
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NAD_1983_StatePlane_Maryland_FIPS_1900 |