The Texas Natural Resources Information System (TNRIS) is pleased to announce the release of about 17,942 square miles of recently acquired, high resolution lidar data over 26 counties in south central Texas. Aerial collection took place during the 2018 leaf-off season in Texas.
The project was funded by a federal consortium of partners to support the 3DEP mission, the Federal Emergency Management Agency (FEMA) Risk Mapping, Assessment, and Planning(MAP) program and the Natural Resources Conservation Service (NRCS) high resolution elevation enterprise program
Further details regarding this acquisition can be found by downloading the Project Report(s) found in the data catalog entry.
To download the 2018 USGS Lower Colorado San Bernard lidar data products, please use the DataHub.
Please see our Lidar status map for statewide lidar coverage.
Vertical NVA RMSEz tested 4.9 cm . The tested accuracy in all areas meets the project specification for 10 cm.
Average first-return point density meets the 2 ppsm project specification.
Point data is classified according to the following American Society for Photogrammetry and Remote Sensing (ASPRS) class schema:
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