2023 TX_LowerRioGrande Orthoimagery

This TX_LowerRioGrande_D22 project called for the planning, acquisition, processing, and derivative products of lidar data to be collected at an aggregate nominal pulse spacing (ANPS) of 0.18 meters (30 ppsm) and 0.35 meters (8ppsm). Project specifications are based on the U.S. Geological Survey National Geospatial Program Base Lidar Specification 2022 Rev A. The data was developed based on a horizontal projection/datum of NAD83 (2011), UTM14N (EPSG 6343), meters and vertical datum of NAVD88 (GEOID18), meters. Lidar data was delivered as processed Classified LAS 1.4 files, formatted to individual 500 m x 500 m tiles for the 30 ppsm AOI and 1000 m x 1000 m tiles for the 8 ppsm AOI, and as tiled intensity imagery and tiled bare earth Digital Elevation Models (DEM); all tiled to the same schemas. Swath separation images, maximum height surface rasters, hydro-flattening breaklines, building footprints, building models, vegetation canopy rasters, and ortho imagery (10 cm and 20cm GSDs) were also included in deliverables.