LiDAR Derived Bare Earth Digital Elevation Model, 2016: Minidoka National Wildlife Refuge

Description

This lidar data set includes unclassified swath LAS 1.4 files, classified LAS 1.4 files, breaklines, digital elevation models (DEMs), first return digital surface models (DSMs), and intensity imagery. Geographic Extent: Fourteen partial counties in Utah, covering approximately 7,005 total square kilometers; partial coverage of three counties covering approximately 182 square kilometers in the Minidoka QL1 AOI. This area is part of the Bear Lake / Cache Valley QL1 AOI. Dataset Description: The Utah 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 0.35 meters. Project specifications are based on the U.S. Geological Survey National Geospatial Program Base Lidar Specification, Version 1.2. The data was developed based on a horizontal projection/datum of NAD83 (2011), UTM Zone 12, meters and vertical datum of NAVD88 (GEOID12B), meters. Lidar data was delivered as flightline-extent unclassified LAS swaths, as processed Classified LAS 1.4 files formatted to 215 individual 1,000 meter x 1,000 meter tiles; as tiled intensity imagery, as tiled bare earth DEMs, and as tiled first return DSMs all tiled a 2,000 meter x 2,000 meter schema (82 tiles). Continuous breaklines were produced in Esri shapefile format. Ground Conditions: Lidar was partially collected in fall of 2016, 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. established a total of 28 ground control points that were used to calibrate the lidar to known ground locations established throughout the project area. An additional 5 independent accuracy checkpoints, 5 in Bare Earth and Urban landcovers (5 NVA points), 6 in the Shrubs and Tall Grass category (6 VVA points), were used to assess the vertical accuracy of the data. These checkpoints were not used to calibrate or post process the data.

Resources

Name Format Description Link
55 2016 Minidoka NWR Hydro-Flattened DEM Metadata https://iris.fws.gov/APPS/ServCat/DownloadFile/255096?Reference=169604
57 Area of Interest captured during the 2016 Minidoka NWR flight. Shapefile. Metadata stored separately. https://iris.fws.gov/APPS/ServCat/DownloadFile/255095?Reference=169604
55 2016 Minidoka NWR LiDAR Project-Level Metadata https://iris.fws.gov/APPS/ServCat/DownloadFile/255098?Reference=169604
55 2016 Minidoka NWR LiDAR AOI Metadata https://iris.fws.gov/APPS/ServCat/DownloadFile/255097?Reference=169604

Tags

  • topography
  • bare-earth
  • idaho
  • elevation-data
  • dem
  • light-detection-and-ranging
  • digital-terrain-model
  • lidar

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