This page includes a summary of the South Texas FEMA LiDAR Acquisition project.  To view or download LiDAR data in Equator right away, click on the button below.

The South Texas LiDAR acquisition project was carried out between January 23, 2018 and February 23, 2019 for FEMA. The total size of the area surveyed includes 22,229 square miles.

Aerial topographic LiDAR was acquired by Quantum Spatial in 121 lifts. LiDAR sensors used include Leica ALS70, Leica ALS80, Optech Orion H300, Riegl VQ1560i, and Riegl LMS Q1560. Data was collected at an average point density of 2.5 pts / m2.

The measured non-vegetated vertical accuracy (NVA) is 0.089 m or 3.5 inches. The vegetated vertical accuracy (VVA) is 0.283 m or 11.1 inches. Vertical accuracy is reported because it is generally less accurate than the horizontal measurement, and as a result, is the limiting factor for application of the data.

The counties covered, or partially covered, as part of the South Texas LiDAR acquisition project include:

The major cities / towns covered, or partially covered, as part of the South Texas LiDAR acquisition project include:

Please visit the USGS Topographic Map page on the Equator website to learn more about LiDAR data coverage, and what is available in your area.

The old way of viewing topography online is low-resolution and time-consuming. Now you can stream USGS topographic data on the fly, in your browser, at the best available resolution.