New Lidar Releases for USGS Acquisitions

The Texas Natural Resources Information System (TNRIS) is pleased to announce the release of ~18,580 square miles of recently acquired high resolution Light Detection and Ranging Lidar data from five federal agency collections from 2014-2017. Aerial collection took place during the leaf-off season in Texas.

The primary purpose of these projects was to develop consistent and accurate USGS Quality Level 2 (QL2) elevation datasets from high-accuracy lidar.

Details regarding these acquisitions can be found by downloading the supplemental reports found in their data catalog entries.

Data Access

Use our online Data Search & Download to locate your desired area and download the available Lidar for this dataset

Lidar data and the associated geospatial products are available for the cost of reproduction through TNRIS.

Coverage Areas

View coverage areas in the interactive maps below:

USGS 2014 70cm Archer Jack Lidar


USGS 2017 70cm Amistad National Recreation Area Lidar

USGS 2016 70cm Neches River Basin Lidar


USGS 2016 Middle Brazos and Lake Whitney 70cm Lidar

Please see our Lidar status map for statewide lidar coverage.

Catalog Entries

PRODUCTS

  • Classified all-return lidar in National Grid tiles in LAS 1.4 format
  • Bare-earth digital elevation model (DEM) in an .img format (1-meter)
  • Hydro-flattening breaklines in SHP or Geodatabase
  • File-level FGDC metadata in XML

Preview of Archer Jack lidar Preview of Lake Amistad lidar Preview of Neches River Basin lidar Preview of Lake Whitney lidar

PRODUCT SPECIFICATION

  • Vertical accuracy (RMSEz) standard for these projects were produced to meet 10cm. Exact project details can be found in the supplemental reports of the respective projects
  • Average first-return point density for these projects were produced to meet 2 points per square meter.
  • Point data are classified according to the following American Society for Photogrammetry and Remote Sensing (ASPRS) class schema:
    • Class 1: Unclassified, used for all other features that do not fit into the Classes 2, 7, 9, 10,17, or 18, including vegetation, buildings, etc.
    • Class 2: Bare-Earth Ground
    • Class 7. Low Noise
    • Class 9. Water, points located within collected breaklines
    • Class 10. Ignored Ground due to breakline proximity
    • Class 17. Bridge Decks
    • Class 18. High Noise

Projection and Tiling

  • Horizontal projection is UTM NAD83(2011) Zones 14-15
  • Vertical projection is NAVD88 Geoid 12A-12B
  • Units are in meters denoting orthometric heights
  • Structure for data listed above shall conform to the US National Grid

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